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2024-05-02wifi: rtlwifi: rtl8192de: Fix 5 GHz TX powerBitterblue Smith
Different channels have different TX power settings. rtl8192de is using the TX power setting from the wrong channel in the 5 GHz band because _rtl92c_phy_get_rightchnlplace expects an array which includes all the channel numbers, but it's using an array which includes only the 5 GHz channel numbers. Use the array channel_all (defined in rtl8192de/phy.c) instead of the incorrect channel5g (defined in core.c). Tested only with rtl8192du, which will use the same TX power code. Cc: stable@vger.kernel.org Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com> Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Link: https://msgid.link/c7653517-cf88-4f57-b79a-8edb0a8b32f0@gmail.com
2024-05-01vxlan: Pull inner IP header in vxlan_rcv().Guillaume Nault
Ensure the inner IP header is part of skb's linear data before reading its ECN bits. Otherwise we might read garbage. One symptom is the system erroneously logging errors like "vxlan: non-ECT from xxx.xxx.xxx.xxx with TOS=xxxx". Similar bugs have been fixed in geneve, ip_tunnel and ip6_tunnel (see commit 1ca1ba465e55 ("geneve: make sure to pull inner header in geneve_rx()") for example). So let's reuse the same code structure for consistency. Maybe we'll can add a common helper in the future. Fixes: d342894c5d2f ("vxlan: virtual extensible lan") Signed-off-by: Guillaume Nault <gnault@redhat.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Link: https://lore.kernel.org/r/1239c8db54efec341dd6455c77e0380f58923a3c.1714495737.git.gnault@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01Merge branch 'net-dsa-adjust_link-removal'Jakub Kicinski
Florian Fainelli says: ==================== net: dsa: adjust_link removal Now that the last in-tree driver (b53) has been converted to PHYLINK, we can get rid of all of code that catered to working with drivers implementing only PHYLIB's adjust_link callback. ==================== Link: https://lore.kernel.org/r/20240430164816.2400606-1-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01net: dsa: Remove adjust_link pathsFlorian Fainelli
Now that we no longer any drivers using PHYLIB's adjust_link callback, remove all paths that made use of adjust_link as well as the associated functions. Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/20240430164816.2400606-3-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01net: dsa: Remove fixed_link_update memberFlorian Fainelli
We have not had a switch driver use a fixed_link_update callback since 58d56fcc3964f9be0a9ca42fd126bcd9dc7afc90 ("net: dsa: bcm_sf2: Get rid of PHYLIB functions") remove this callback. Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/20240430164816.2400606-2-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01tipc: fix a possible memleak in tipc_buf_appendXin Long
__skb_linearize() doesn't free the skb when it fails, so move '*buf = NULL' after __skb_linearize(), so that the skb can be freed on the err path. Fixes: b7df21cf1b79 ("tipc: skb_linearize the head skb when reassembling msgs") Reported-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Tung Nguyen <tung.q.nguyen@dektech.com.au> Link: https://lore.kernel.org/r/90710748c29a1521efac4f75ea01b3b7e61414cf.1714485818.git.lucien.xin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01tipc: fix UAF in error pathPaolo Abeni
Sam Page (sam4k) working with Trend Micro Zero Day Initiative reported a UAF in the tipc_buf_append() error path: BUG: KASAN: slab-use-after-free in kfree_skb_list_reason+0x47e/0x4c0 linux/net/core/skbuff.c:1183 Read of size 8 at addr ffff88804d2a7c80 by task poc/8034 CPU: 1 PID: 8034 Comm: poc Not tainted 6.8.2 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014 Call Trace: <IRQ> __dump_stack linux/lib/dump_stack.c:88 dump_stack_lvl+0xd9/0x1b0 linux/lib/dump_stack.c:106 print_address_description linux/mm/kasan/report.c:377 print_report+0xc4/0x620 linux/mm/kasan/report.c:488 kasan_report+0xda/0x110 linux/mm/kasan/report.c:601 kfree_skb_list_reason+0x47e/0x4c0 linux/net/core/skbuff.c:1183 skb_release_data+0x5af/0x880 linux/net/core/skbuff.c:1026 skb_release_all linux/net/core/skbuff.c:1094 __kfree_skb linux/net/core/skbuff.c:1108 kfree_skb_reason+0x12d/0x210 linux/net/core/skbuff.c:1144 kfree_skb linux/./include/linux/skbuff.h:1244 tipc_buf_append+0x425/0xb50 linux/net/tipc/msg.c:186 tipc_link_input+0x224/0x7c0 linux/net/tipc/link.c:1324 tipc_link_rcv+0x76e/0x2d70 linux/net/tipc/link.c:1824 tipc_rcv+0x45f/0x10f0 linux/net/tipc/node.c:2159 tipc_udp_recv+0x73b/0x8f0 linux/net/tipc/udp_media.c:390 udp_queue_rcv_one_skb+0xad2/0x1850 linux/net/ipv4/udp.c:2108 udp_queue_rcv_skb+0x131/0xb00 linux/net/ipv4/udp.c:2186 udp_unicast_rcv_skb+0x165/0x3b0 linux/net/ipv4/udp.c:2346 __udp4_lib_rcv+0x2594/0x3400 linux/net/ipv4/udp.c:2422 ip_protocol_deliver_rcu+0x30c/0x4e0 linux/net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2e4/0x520 linux/net/ipv4/ip_input.c:233 NF_HOOK linux/./include/linux/netfilter.h:314 NF_HOOK linux/./include/linux/netfilter.h:308 ip_local_deliver+0x18e/0x1f0 linux/net/ipv4/ip_input.c:254 dst_input linux/./include/net/dst.h:461 ip_rcv_finish linux/net/ipv4/ip_input.c:449 NF_HOOK linux/./include/linux/netfilter.h:314 NF_HOOK linux/./include/linux/netfilter.h:308 ip_rcv+0x2c5/0x5d0 linux/net/ipv4/ip_input.c:569 __netif_receive_skb_one_core+0x199/0x1e0 linux/net/core/dev.c:5534 __netif_receive_skb+0x1f/0x1c0 linux/net/core/dev.c:5648 process_backlog+0x101/0x6b0 linux/net/core/dev.c:5976 __napi_poll.constprop.0+0xba/0x550 linux/net/core/dev.c:6576 napi_poll linux/net/core/dev.c:6645 net_rx_action+0x95a/0xe90 linux/net/core/dev.c:6781 __do_softirq+0x21f/0x8e7 linux/kernel/softirq.c:553 do_softirq linux/kernel/softirq.c:454 do_softirq+0xb2/0xf0 linux/kernel/softirq.c:441 </IRQ> <TASK> __local_bh_enable_ip+0x100/0x120 linux/kernel/softirq.c:381 local_bh_enable linux/./include/linux/bottom_half.h:33 rcu_read_unlock_bh linux/./include/linux/rcupdate.h:851 __dev_queue_xmit+0x871/0x3ee0 linux/net/core/dev.c:4378 dev_queue_xmit linux/./include/linux/netdevice.h:3169 neigh_hh_output linux/./include/net/neighbour.h:526 neigh_output linux/./include/net/neighbour.h:540 ip_finish_output2+0x169f/0x2550 linux/net/ipv4/ip_output.c:235 __ip_finish_output linux/net/ipv4/ip_output.c:313 __ip_finish_output+0x49e/0x950 linux/net/ipv4/ip_output.c:295 ip_finish_output+0x31/0x310 linux/net/ipv4/ip_output.c:323 NF_HOOK_COND linux/./include/linux/netfilter.h:303 ip_output+0x13b/0x2a0 linux/net/ipv4/ip_output.c:433 dst_output linux/./include/net/dst.h:451 ip_local_out linux/net/ipv4/ip_output.c:129 ip_send_skb+0x3e5/0x560 linux/net/ipv4/ip_output.c:1492 udp_send_skb+0x73f/0x1530 linux/net/ipv4/udp.c:963 udp_sendmsg+0x1a36/0x2b40 linux/net/ipv4/udp.c:1250 inet_sendmsg+0x105/0x140 linux/net/ipv4/af_inet.c:850 sock_sendmsg_nosec linux/net/socket.c:730 __sock_sendmsg linux/net/socket.c:745 __sys_sendto+0x42c/0x4e0 linux/net/socket.c:2191 __do_sys_sendto linux/net/socket.c:2203 __se_sys_sendto linux/net/socket.c:2199 __x64_sys_sendto+0xe0/0x1c0 linux/net/socket.c:2199 do_syscall_x64 linux/arch/x86/entry/common.c:52 do_syscall_64+0xd8/0x270 linux/arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 linux/arch/x86/entry/entry_64.S:120 RIP: 0033:0x7f3434974f29 Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 37 8f 0d 00 f7 d8 64 89 01 48 RSP: 002b:00007fff9154f2b8 EFLAGS: 00000212 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3434974f29 RDX: 00000000000032c8 RSI: 00007fff9154f300 RDI: 0000000000000003 RBP: 00007fff915532e0 R08: 00007fff91553360 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000212 R12: 000055ed86d261d0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> In the critical scenario, either the relevant skb is freed or its ownership is transferred into a frag_lists. In both cases, the cleanup code must not free it again: we need to clear the skb reference earlier. Fixes: 1149557d64c9 ("tipc: eliminate unnecessary linearization of incoming buffers") Cc: stable@vger.kernel.org Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-23852 Acked-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/752f1ccf762223d109845365d07f55414058e5a3.1714484273.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01net: ti: icssg_prueth: Add SW TX / RX Coalescing based on hrtimersMD Danish Anwar
Add SW IRQ coalescing based on hrtimers for RX and TX data path for ICSSG driver, which can be enabled by ethtool commands: - RX coalescing ethtool -C eth1 rx-usecs 50 - TX coalescing can be enabled per TX queue - by default enables coalescing for TX0 ethtool -C eth1 tx-usecs 50 - configure TX0 ethtool -Q eth0 queue_mask 1 --coalesce tx-usecs 100 - configure TX1 ethtool -Q eth0 queue_mask 2 --coalesce tx-usecs 100 - configure TX0 and TX1 ethtool -Q eth0 queue_mask 3 --coalesce tx-usecs 100 --coalesce tx-usecs 100 Minimum value for both rx-usecs and tx-usecs is 20us. Compared to gro_flush_timeout and napi_defer_hard_irqs this patch allows to enable IRQ coalescing for RX path separately. Benchmarking numbers: =============================================================== | Method | Tput_TX | CPU_TX | Tput_RX | CPU_RX | | ============================================================== | Default Driver 943 Mbps 31% 517 Mbps 38% | | IRQ Coalescing (Patch) 943 Mbps 28% 518 Mbps 25% | =============================================================== Signed-off-by: MD Danish Anwar <danishanwar@ti.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20240430120634.1558998-1-danishanwar@ti.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01Merge branch 'arp-random-clean-up-and-rcu-conversion-for-ioctl-siocgarp'Jakub Kicinski
Kuniyuki Iwashima says: ==================== arp: Random clean up and RCU conversion for ioctl(SIOCGARP). arp_ioctl() holds rtnl_lock() regardless of cmd (SIOCDARP, SIOCSARP, and SIOCGARP) to get net_device by __dev_get_by_name() and copy dev->name safely. In the SIOCGARP path, arp_req_get() calls neigh_lookup(), which looks up a neighbour entry under RCU. This series cleans up ioctl() code a bit and extends the RCU section not to take rtnl_lock() and instead use dev_get_by_name_rcu() and netdev_copy_name() for SIOCGARP. v2: https://lore.kernel.org/netdev/20240425170002.68160-1-kuniyu@amazon.com/ v1: https://lore.kernel.org/netdev/20240422194755.4221-1-kuniyu@amazon.com/ ==================== Link: https://lore.kernel.org/r/20240430015813.71143-1-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01arp: Convert ioctl(SIOCGARP) to RCU.Kuniyuki Iwashima
ioctl(SIOCGARP) holds rtnl_lock() to get netdev by __dev_get_by_name() and copy dev->name safely and calls neigh_lookup() later, which looks up a neighbour entry under RCU. Let's replace __dev_get_by_name() with dev_get_by_name_rcu() and strscpy() with netdev_copy_name() to avoid locking rtnl_lock(). Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-8-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01net: Protect dev->name by seqlock.Kuniyuki Iwashima
We will convert ioctl(SIOCGARP) to RCU, and then we need to copy dev->name which is currently protected by rtnl_lock(). This patch does the following: 1) Add seqlock netdev_rename_lock to protect dev->name 2) Add netdev_copy_name() that copies dev->name to buffer under netdev_rename_lock 3) Use netdev_copy_name() in netdev_get_name() and drop devnet_rename_sem Suggested-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/netdev/CANn89iJEWs7AYSJqGCUABeVqOCTkErponfZdT5kV-iD=-SajnQ@mail.gmail.com/ Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-7-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01arp: Get dev after calling arp_req_(delete|set|get)().Kuniyuki Iwashima
arp_ioctl() holds rtnl_lock() first regardless of cmd (SIOCDARP, SIOCSARP, and SIOCGARP) to get net_device by __dev_get_by_name() and copy dev->name safely. In the SIOCGARP path, arp_req_get() calls neigh_lookup(), which looks up a neighbour entry under RCU. We will extend the RCU section not to take rtnl_lock() and instead use dev_get_by_name_rcu() for SIOCGARP. As a preparation, let's move __dev_get_by_name() into another function and call it from arp_req_delete(), arp_req_set(), and arp_req_get(). Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-6-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01arp: Remove a nest in arp_req_get().Kuniyuki Iwashima
This is a prep patch to make the following changes tidy. No functional change intended. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-5-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01arp: Factorise ip_route_output() call in arp_req_set() and arp_req_delete().Kuniyuki Iwashima
When ioctl(SIOCDARP/SIOCSARP) is issued for non-proxy entry (no ATF_COM) without arpreq.arp_dev[] set, arp_req_set() and arp_req_delete() looks up dev based on IPv4 address by ip_route_output(). Let's factorise the same code as arp_req_dev(). Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-4-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01arp: Validate netmask earlier for SIOCDARP and SIOCSARP in arp_ioctl().Kuniyuki Iwashima
When ioctl(SIOCDARP/SIOCSARP) is issued with ATF_PUBL, r.arp_netmask must be 0.0.0.0 or 255.255.255.255. Currently, the netmask is validated in arp_req_delete_public() or arp_req_set_public() under rtnl_lock(). We have ATF_NETMASK test in arp_ioctl() before holding rtnl_lock(), so let's move the netmask validation there. Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-3-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01arp: Move ATF_COM setting in arp_req_set().Kuniyuki Iwashima
In arp_req_set(), if ATF_PERM is set in arpreq.arp_flags, ATF_COM is set automatically. The flag will be used later for neigh_update() only when a neighbour entry is found. Let's set ATF_COM just before calling neigh_update(). Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com> Link: https://lore.kernel.org/r/20240430015813.71143-2-kuniyu@amazon.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01selftests: netfilter: nft_concat_range.sh: reduce debug kernel run timeFlorian Westphal
Even a 1h timeout isn't enough for nft_concat_range.sh to complete on debug kernels. Reduce test complexity and only match on single entry if KSFT_MACHINE_SLOW is set. To spot 'slow' tests, print the subtest duration (in seconds) in addition to the status. Add new nft_concat_range_perf.sh script, not executed via kselftest, to run the performance (pps match rate) tests. Those need about 25m to complete which seems too much to run this via 'make run_tests'. Signed-off-by: Florian Westphal <fw@strlen.de> Link: https://lore.kernel.org/r/20240430145810.23447-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01rxrpc: Clients must accept conn from any addressJeffrey Altman
The find connection logic of Transarc's Rx was modified in the mid-1990s to support multi-homed servers which might send a response packet from an address other than the destination address in the received packet. The rules for accepting a packet by an Rx initiator (RX_CLIENT_CONNECTION) were altered to permit acceptance of a packet from any address provided that the port number was unchanged and all of the connection identifiers matched (Epoch, CID, SecurityClass, ...). This change applies the same rules to the Linux implementation which makes it consistent with IBM AFS 3.6, Arla, OpenAFS and AuriStorFS. Fixes: 17926a79320a ("[AF_RXRPC]: Provide secure RxRPC sockets for use by userspace and kernel both") Signed-off-by: Jeffrey Altman <jaltman@auristor.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Marc Dionne <marc.dionne@auristor.com> Link: https://lore.kernel.org/r/20240419163057.4141728-1-marc.dionne@auristor.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01Merge tag 'asoc-fix-v6.9-rc6' of ↵Takashi Iwai
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v6.9 This is much larger than is ideal, partly due to your holiday but also due to several vendors having come in with relatively large fixes at similar times. It's all driver specific stuff. The meson fixes from Jerome fix some rare timing issues with blocking operations happening in triggers, plus the continuous clock support which fixes clocking for some platforms. The SOF series from Peter builds to the fix to avoid spurious resets of ChainDMA which triggered errors in cleanup paths with both PulseAudio and PipeWire, and there's also some simple new debugfs files from Pierre which make support a lot eaiser.
2024-05-01Merge tag 'regulator-fix-v6.9-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "There's a few simple driver specific fixes here, plus some core cleanups from Matti which fix issues found with client drivers due to the API being confusing. The two fixes for the stubs provide more constructive behaviour with !REGULATOR configurations, issues were noticed with some hwmon drivers which would otherwise have needed confusing bodges in the users. The irq_helpers fix to duplicate the provided name for the interrupt controller was found because a driver got this wrong and it's again a case where the core is the sensible place to put the fix" * tag 'regulator-fix-v6.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: change devm_regulator_get_enable_optional() stub to return Ok regulator: change stubbed devm_regulator_get_enable to return Ok regulator: vqmmc-ipq4019: fix module autoloading regulator: qcom-refgen: fix module autoloading regulator: mt6360: De-capitalize devicetree regulator subnodes regulator: irq_helpers: duplicate IRQ name
2024-05-01mm/slab: make __free(kfree) accept error pointersDan Carpenter
Currently, if an automatically freed allocation is an error pointer that will lead to a crash. An example of this is in wm831x_gpio_dbg_show(). 171 char *label __free(kfree) = gpiochip_dup_line_label(chip, i); 172 if (IS_ERR(label)) { 173 dev_err(wm831x->dev, "Failed to duplicate label\n"); 174 continue; 175 } The auto clean up function should check for error pointers as well, otherwise we're going to keep hitting issues like this. Fixes: 54da6a092431 ("locking: Introduce __cleanup() based infrastructure") Cc: <stable@vger.kernel.org> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
2024-05-01mm/slub: avoid zeroing outside-object freepointer for single freeNicolas Bouchinet
Commit 284f17ac13fe ("mm/slub: handle bulk and single object freeing separately") splits single and bulk object freeing in two functions slab_free() and slab_free_bulk() which leads slab_free() to call slab_free_hook() directly instead of slab_free_freelist_hook(). If `init_on_free` is set, slab_free_hook() zeroes the object. Afterward, if `slub_debug=F` and `CONFIG_SLAB_FREELIST_HARDENED` are set, the do_slab_free() slowpath executes freelist consistency checks and try to decode a zeroed freepointer which leads to a "Freepointer corrupt" detection in check_object(). During bulk free, slab_free_freelist_hook() isn't affected as it always sets it objects freepointer using set_freepointer() to maintain its reconstructed freelist after `init_on_free`. For single free, object's freepointer thus needs to be avoided when stored outside the object if `init_on_free` is set. The freepointer left as is, check_object() may later detect an invalid pointer value due to objects overflow. To reproduce, set `slub_debug=FU init_on_free=1 log_level=7` on the command line of a kernel build with `CONFIG_SLAB_FREELIST_HARDENED=y`. dmesg sample log: [ 10.708715] ============================================================================= [ 10.710323] BUG kmalloc-rnd-05-32 (Tainted: G B T ): Freepointer corrupt [ 10.712695] ----------------------------------------------------------------------------- [ 10.712695] [ 10.712695] Slab 0xffffd8bdc400d580 objects=32 used=4 fp=0xffff9d9a80356f80 flags=0x200000000000a00(workingset|slab|node=0|zone=2) [ 10.716698] Object 0xffff9d9a80356600 @offset=1536 fp=0x7ee4f480ce0ecd7c [ 10.716698] [ 10.716698] Bytes b4 ffff9d9a803565f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 10.720703] Object ffff9d9a80356600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 10.720703] Object ffff9d9a80356610: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 10.724696] Padding ffff9d9a8035666c: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ [ 10.724696] Padding ffff9d9a8035667c: 00 00 00 00 .... [ 10.724696] FIX kmalloc-rnd-05-32: Object at 0xffff9d9a80356600 not freed Fixes: 284f17ac13fe ("mm/slub: handle bulk and single object freeing separately") Cc: <stable@vger.kernel.org> Co-developed-by: Chengming Zhou <chengming.zhou@linux.dev> Signed-off-by: Chengming Zhou <chengming.zhou@linux.dev> Signed-off-by: Nicolas Bouchinet <nicolas.bouchinet@ssi.gouv.fr> Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
2024-05-01drm/xe/vm: prevent UAF in rebind_work_func()Matthew Auld
We flush the rebind worker during the vm close phase, however in places like preempt_fence_work_func() we seem to queue the rebind worker without first checking if the vm has already been closed. The concern here is the vm being closed with the worker flushed, but then being rearmed later, which looks like potential uaf, since there is no actual refcounting to track the queued worker. We can't take the vm->lock here in preempt_rebind_work_func() to first check if the vm is closed since that will deadlock, so instead flush the worker again when the vm refcount reaches zero. v2: - Grabbing vm->lock in the preempt worker creates a deadlock, so checking the closed state is tricky. Instead flush the worker when the refcount reaches zero. It should be impossible to queue the preempt worker without already holding vm ref. Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs") Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1676 Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1591 Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1364 Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1304 Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1249 Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: <stable@vger.kernel.org> # v6.8+ Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240423074721.119633-4-matthew.auld@intel.com (cherry picked from commit 3d44d67c441a9fe6f81a1d705f7de009a32a5b35) Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2024-05-01drm/amd/display: Disable panel replay by default for nowMario Limonciello
Panel replay was enabled by default in commit 5950efe25ee0 ("drm/amd/display: Enable Panel Replay for static screen use case"), but it isn't working properly at least on some BOE and AUO panels. Instead of being static the screen is solid black when active. As it's a new feature that was just introduced that regressed VRR disable it for now so that problem can be properly root caused. Cc: Tom Chung <chiahsuan.chung@amd.com> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3344 Fixes: 5950efe25ee0 ("drm/amd/display: Enable Panel Replay for static screen use case") Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Acked-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-05-01ipv6: anycast: use call_rcu_hurry() in aca_put()Eric Dumazet
This is a followup of commit b5327b9a300e ("ipv6: use call_rcu_hurry() in fib6_info_release()"). I had another pmtu.sh failure, and found another lazy call_rcu() causing this failure. aca_free_rcu() calls fib6_info_release() which releases devices references. We must not delay it too much or risk unregister_netdevice/ref_tracker traces because references to netdev are not released in time. This should speedup device/netns dismantles when CONFIG_RCU_LAZY=y Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-01net: core: reject skb_copy(_expand) for fraglist GSO skbsFelix Fietkau
SKB_GSO_FRAGLIST skbs must not be linearized, otherwise they become invalid. Return NULL if such an skb is passed to skb_copy or skb_copy_expand, in order to prevent a crash on a potential later call to skb_gso_segment. Fixes: 3a1296a38d0c ("net: Support GRO/GSO fraglist chaining.") Signed-off-by: Felix Fietkau <nbd@nbd.name> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-01net: bridge: fix multicast-to-unicast with fraglist GSOFelix Fietkau
Calling skb_copy on a SKB_GSO_FRAGLIST skb is not valid, since it returns an invalid linearized skb. This code only needs to change the ethernet header, so pskb_copy is the right function to call here. Fixes: 6db6f0eae605 ("bridge: multicast to unicast") Signed-off-by: Felix Fietkau <nbd@nbd.name> Acked-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-05-01nvme-tcp: strict pdu pacing to avoid send stalls on TLSHannes Reinecke
TLS requires a strict pdu pacing via MSG_EOR to signal the end of a record and subsequent encryption. If we do not set MSG_EOR at the end of a sequence the record won't be closed, encryption doesn't start, and we end up with a send stall as the message will never be passed on to the TCP layer. So do not check for the queue status when TLS is enabled but rather make the MSG_MORE setting dependent on the current request only. Signed-off-by: Hannes Reinecke <hare@kernel.org> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-05-01nvmet: fix nvme status code when namespace is disabledSagi Grimberg
If the user disabled a nvmet namespace, it is removed from the subsystem namespaces list. When nvmet processes a command directed to an nsid that was disabled, it cannot differentiate between a nsid that is disabled vs. a non-existent namespace, and resorts to return NVME_SC_INVALID_NS with the dnr bit set. This translates to a non-retryable status for the host, which translates to a user error. We should expect disabled namespaces to not cause an I/O error in a multipath environment. Address this by searching a configfs item for the namespace nvmet failed to find, and if we found one, conclude that the namespace is disabled (perhaps temporarily). Return NVME_SC_INTERNAL_PATH_ERROR in this case and keep DNR bit cleared. Reported-by: Jirong Feng <jirong.feng@easystack.cn> Tested-by: Jirong Feng <jirong.feng@easystack.cn> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-05-01nvmet-tcp: fix possible memory leak when tearing down a controllerSagi Grimberg
When we teardown the controller, we wait for pending I/Os to complete (sq->ref on all queues to drop to zero) and then we go over the commands, and free their command buffers in case they are still fetching data from the host (e.g. processing nvme writes) and have yet to take a reference on the sq. However, we may miss the case where commands have failed before executing and are queued for sending a response, but will never occur because the queue socket is already down. In this case we may miss deallocating command buffers. Solve this by freeing all commands buffers as nvmet_tcp_free_cmd_buffers is idempotent anyways. Reported-by: Yi Zhang <yi.zhang@redhat.com> Tested-by: Yi Zhang <yi.zhang@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-05-01nvme: cancel pending I/O if nvme controller is in terminal stateNilay Shroff
While I/O is running, if the pci bus error occurs then in-flight I/O can not complete. Worst, if at this time, user (logically) hot-unplug the nvme disk then the nvme_remove() code path can't forward progress until in-flight I/O is cancelled. So these sequence of events may potentially hang hot-unplug code path indefinitely. This patch helps cancel the pending/in-flight I/O from the nvme request timeout handler in case the nvme controller is in the terminal (DEAD/DELETING/DELETING_NOIO) state and that helps nvme_remove() code path forward progress and finish successfully. Link: https://lore.kernel.org/all/199be893-5dfa-41e5-b6f2-40ac90ebccc4@linux.ibm.com/ Signed-off-by: Nilay Shroff <nilay@linux.ibm.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-05-01nvmet-auth: replace pr_debug() with pr_err() to report an error.Maurizio Lombardi
In nvmet_auth_host_hash(), if a mismatch is detected in the hash length the kernel should print an error. Signed-off-by: Maurizio Lombardi <mlombard@redhat.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-05-01nvmet-auth: return the error code to the nvmet_auth_host_hash() callersMaurizio Lombardi
If the nvmet_auth_host_hash() function fails, the error code should be returned to its callers. Signed-off-by: Maurizio Lombardi <mlombard@redhat.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-05-01nvme: find numa distance only if controller has valid numa idNilay Shroff
On system where native nvme multipath is configured and iopolicy is set to numa but the nvme controller numa node id is undefined or -1 (NUMA_NO_NODE) then avoid calculating node distance for finding optimal io path. In such case we may access numa distance table with invalid index and that may potentially refer to incorrect memory. So this patch ensures that if the nvme controller numa node id is -1 then instead of calculating node distance for finding optimal io path, we set the numa node distance of such controller to default 10 (LOCAL_DISTANCE). Link: https://lore.kernel.org/all/20240413090614.678353-1-nilay@linux.ibm.com/ Signed-off-by: Nilay Shroff <nilay@linux.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Signed-off-by: Keith Busch <kbusch@kernel.org>
2024-05-01s390/paes: Reestablish retry loop in paesHarald Freudenberger
With commit ed6776c96c60 ("s390/crypto: remove retry loop with sleep from PAES pkey invocation") the retry loop to retry derivation of a protected key from a secure key has been removed. This was based on the assumption that theses retries are not needed any more as proper retries are done in the zcrypt layer. However, tests have revealed that there exist some cases with master key change in the HSM and immediately (< 1 second) attempt to derive a protected key from a secure key with exact this HSM may eventually fail. The low level functions in zcrypt_ccamisc.c and zcrypt_ep11misc.c detect and report this temporary failure and report it to the caller as -EBUSY. The re-established retry loop in the paes implementation catches exactly this -EBUSY and eventually may run some retries. Fixes: ed6776c96c60 ("s390/crypto: remove retry loop with sleep from PAES pkey invocation") Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2024-05-01s390/zcrypt: Use EBUSY to indicate temp unavailabilityHarald Freudenberger
Use -EBUSY instead of -EAGAIN in zcrypt_ccamisc.c in cases where the CCA card returns 8/2290 to indicate a temporarily unavailability of this function. Fixes: ed6776c96c60 ("s390/crypto: remove retry loop with sleep from PAES pkey invocation") Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2024-05-01s390/zcrypt: Handle ep11 cprb return codeHarald Freudenberger
An EP11 reply cprb contains a field ret_code which may hold an error code different than the error code stored in the payload of the cprb. As of now all the EP11 misc functions do not evaluate this field but focus on the error code in the payload. Before checking the payload error, first the cprb error field should be evaluated which is introduced with this patch. If the return code value 0x000c0003 is seen, this indicates a busy situation which is reflected by -EBUSY in the zcrpyt_ep11misc.c low level function. A higher level caller should consider to retry after waiting a dedicated duration (say 1 second). Fixes: ed6776c96c60 ("s390/crypto: remove retry loop with sleep from PAES pkey invocation") Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2024-05-01s390/zcrypt: Fix wrong format string in debug feature printoutHarald Freudenberger
Fix wrong format string debug feature: %04x was used to print out a 32 bit value. - changed to %08x. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Holger Dengler <dengler@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
2024-05-01xfrm: Restrict SA direction attribute to specific netlink message typesAntony Antony
Reject the usage of the SA_DIR attribute in xfrm netlink messages when it's not applicable. This ensures that SA_DIR is only accepted for certain message types (NEWSA, UPDSA, and ALLOCSPI) Signed-off-by: Antony Antony <antony.antony@secunet.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-05-01xfrm: Add dir validation to "in" data path lookupAntony Antony
Introduces validation for the x->dir attribute within the XFRM input data lookup path. If the configured direction does not match the expected direction, input, increment the XfrmInStateDirError counter and drop the packet to ensure data integrity and correct flow handling. grep -vw 0 /proc/net/xfrm_stat XfrmInStateDirError 1 Signed-off-by: Antony Antony <antony.antony@secunet.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-05-01xfrm: Add dir validation to "out" data path lookupAntony Antony
Introduces validation for the x->dir attribute within the XFRM output data lookup path. If the configured direction does not match the expected direction, output, increment the XfrmOutStateDirError counter and drop the packet to ensure data integrity and correct flow handling. grep -vw 0 /proc/net/xfrm_stat XfrmOutPolError 1 XfrmOutStateDirError 1 Signed-off-by: Antony Antony <antony.antony@secunet.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-05-01xfrm: Add Direction to the SA in or outAntony Antony
This patch introduces the 'dir' attribute, 'in' or 'out', to the xfrm_state, SA, enhancing usability by delineating the scope of values based on direction. An input SA will restrict values pertinent to input, effectively segregating them from output-related values. And an output SA will restrict attributes for output. This change aims to streamline the configuration process and improve the overall consistency of SA attributes during configuration. This feature sets the groundwork for future patches, including the upcoming IP-TFS patch. Signed-off-by: Antony Antony <antony.antony@secunet.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2024-05-01x86/mm: Remove broken vsyscall emulation code from the page fault codeLinus Torvalds
The syzbot-reported stack trace from hell in this discussion thread actually has three nested page faults: https://lore.kernel.org/r/000000000000d5f4fc0616e816d4@google.com ... and I think that's actually the important thing here: - the first page fault is from user space, and triggers the vsyscall emulation. - the second page fault is from __do_sys_gettimeofday(), and that should just have caused the exception that then sets the return value to -EFAULT - the third nested page fault is due to _raw_spin_unlock_irqrestore() -> preempt_schedule() -> trace_sched_switch(), which then causes a BPF trace program to run, which does that bpf_probe_read_compat(), which causes that page fault under pagefault_disable(). It's quite the nasty backtrace, and there's a lot going on. The problem is literally the vsyscall emulation, which sets current->thread.sig_on_uaccess_err = 1; and that causes the fixup_exception() code to send the signal *despite* the exception being caught. And I think that is in fact completely bogus. It's completely bogus exactly because it sends that signal even when it *shouldn't* be sent - like for the BPF user mode trace gathering. In other words, I think the whole "sig_on_uaccess_err" thing is entirely broken, because it makes any nested page-faults do all the wrong things. Now, arguably, I don't think anybody should enable vsyscall emulation any more, but this test case clearly does. I think we should just make the "send SIGSEGV" be something that the vsyscall emulation does on its own, not this broken per-thread state for something that isn't actually per thread. The x86 page fault code actually tried to deal with the "incorrect nesting" by having that: if (in_interrupt()) return; which ignores the sig_on_uaccess_err case when it happens in interrupts, but as shown by this example, these nested page faults do not need to be about interrupts at all. IOW, I think the only right thing is to remove that horrendously broken code. The attached patch looks like the ObviouslyCorrect(tm) thing to do. NOTE! This broken code goes back to this commit in 2011: 4fc3490114bb ("x86-64: Set siginfo and context on vsyscall emulation faults") ... and back then the reason was to get all the siginfo details right. Honestly, I do not for a moment believe that it's worth getting the siginfo details right here, but part of the commit says: This fixes issues with UML when vsyscall=emulate. ... and so my patch to remove this garbage will probably break UML in this situation. I do not believe that anybody should be running with vsyscall=emulate in 2024 in the first place, much less if you are doing things like UML. But let's see if somebody screams. Reported-and-tested-by: syzbot+83e7f982ca045ab4405c@syzkaller.appspotmail.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Andy Lutomirski <luto@kernel.org> Link: https://lore.kernel.org/r/CAHk-=wh9D6f7HUkDgZHKmDCHUQmp+Co89GP+b8+z+G56BKeyNg@mail.gmail.com
2024-04-30netpoll: Fix race condition in netpoll_owner_activeBreno Leitao
KCSAN detected a race condition in netpoll: BUG: KCSAN: data-race in net_rx_action / netpoll_send_skb write (marked) to 0xffff8881164168b0 of 4 bytes by interrupt on cpu 10: net_rx_action (./include/linux/netpoll.h:90 net/core/dev.c:6712 net/core/dev.c:6822) <snip> read to 0xffff8881164168b0 of 4 bytes by task 1 on cpu 2: netpoll_send_skb (net/core/netpoll.c:319 net/core/netpoll.c:345 net/core/netpoll.c:393) netpoll_send_udp (net/core/netpoll.c:?) <snip> value changed: 0x0000000a -> 0xffffffff This happens because netpoll_owner_active() needs to check if the current CPU is the owner of the lock, touching napi->poll_owner non atomically. The ->poll_owner field contains the current CPU holding the lock. Use an atomic read to check if the poll owner is the current CPU. Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://lore.kernel.org/r/20240429100437.3487432-1-leitao@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-05-01spi: fix null pointer dereference within spi_syncMans Rullgard
If spi_sync() is called with the non-empty queue and the same spi_message is then reused, the complete callback for the message remains set while the context is cleared, leading to a null pointer dereference when the callback is invoked from spi_finalize_current_message(). With function inlining disabled, the call stack might look like this: _raw_spin_lock_irqsave from complete_with_flags+0x18/0x58 complete_with_flags from spi_complete+0x8/0xc spi_complete from spi_finalize_current_message+0xec/0x184 spi_finalize_current_message from spi_transfer_one_message+0x2a8/0x474 spi_transfer_one_message from __spi_pump_transfer_message+0x104/0x230 __spi_pump_transfer_message from __spi_transfer_message_noqueue+0x30/0xc4 __spi_transfer_message_noqueue from __spi_sync+0x204/0x248 __spi_sync from spi_sync+0x24/0x3c spi_sync from mcp251xfd_regmap_crc_read+0x124/0x28c [mcp251xfd] mcp251xfd_regmap_crc_read [mcp251xfd] from _regmap_raw_read+0xf8/0x154 _regmap_raw_read from _regmap_bus_read+0x44/0x70 _regmap_bus_read from _regmap_read+0x60/0xd8 _regmap_read from regmap_read+0x3c/0x5c regmap_read from mcp251xfd_alloc_can_err_skb+0x1c/0x54 [mcp251xfd] mcp251xfd_alloc_can_err_skb [mcp251xfd] from mcp251xfd_irq+0x194/0xe70 [mcp251xfd] mcp251xfd_irq [mcp251xfd] from irq_thread_fn+0x1c/0x78 irq_thread_fn from irq_thread+0x118/0x1f4 irq_thread from kthread+0xd8/0xf4 kthread from ret_from_fork+0x14/0x28 Fix this by also setting message->complete to NULL when the transfer is complete. Fixes: ae7d2346dc89 ("spi: Don't use the message queue if possible in spi_sync") Signed-off-by: Mans Rullgard <mans@mansr.com> Link: https://lore.kernel.org/r/20240430182705.13019-1-mans@mansr.com Signed-off-by: Mark Brown <broonie@kernel.org>
2024-04-30net: loopback: Do not allocate lstats explicitlyBreno Leitao
With commit 34d21de99cea9 ("net: Move {l,t,d}stats allocation to core and convert veth & vrf"), stats allocation could be done on net core instead of in this driver. With this new approach, the driver doesn't have to bother with error handling (allocation failure checking, making sure free happens in the right spot, etc). This is core responsibility now. Remove the allocation in the loopback driver and leverage the network core allocation instead. Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Link: https://lore.kernel.org/r/20240429085559.2841918-1-leitao@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-04-30drm/amdgpu: fix doorbell regressionShashank Sharma
This patch adds a missed handling of PL domain doorbell while handling VRAM faults. Cc: Christian Koenig <christian.koenig@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Fixes: a6ff969fe9cb ("drm/amdgpu: fix visible VRAM handling during faults") Reviewed-by: Christian Koenig <christian.koenig@amd.com> Signed-off-by: Shashank Sharma <shashank.sharma@amd.com> Signed-off-by: Arvind Yadav <arvind.yadav@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-30drm/amdkfd: Flush the process wq before creating a kfd_processLancelot SIX
There is a race condition when re-creating a kfd_process for a process. This has been observed when a process under the debugger executes exec(3). In this scenario: - The process executes exec. - This will eventually release the process's mm, which will cause the kfd_process object associated with the process to be freed (kfd_process_free_notifier decrements the reference count to the kfd_process to 0). This causes kfd_process_ref_release to enqueue kfd_process_wq_release to the kfd_process_wq. - The debugger receives the PTRACE_EVENT_EXEC notification, and tries to re-enable AMDGPU traps (KFD_IOC_DBG_TRAP_ENABLE). - When handling this request, KFD tries to re-create a kfd_process. This eventually calls kfd_create_process and kobject_init_and_add. At this point the call to kobject_init_and_add can fail because the old kfd_process.kobj has not been freed yet by kfd_process_wq_release. This patch proposes to avoid this race by making sure to drain kfd_process_wq before creating a new kfd_process object. This way, we know that any cleanup task is done executing when we reach kobject_init_and_add. Signed-off-by: Lancelot SIX <lancelot.six@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-30drm/amd/display: Disable seamless boot on 128b/132b encodingSung Joon Kim
[why] preOS will not support display mode programming and link training for UHBR rates. [how] If we detect a sink that's UHBR capable, disable seamless boot Reviewed-by: Anthony Koo <anthony.koo@amd.com> Acked-by: Wayne Lin <wayne.lin@amd.com> Signed-off-by: Sung Joon Kim <sungjoon.kim@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2024-04-30Merge branch 'dt-bindings-net-snps-dwmac-remove-tx-sched-sp-property'Jakub Kicinski
Flavio Suligoi says: ==================== dt-bindings: net: snps, dwmac: remove tx-sched-sp property Strict priority for the tx scheduler is by default in Linux driver, so the tx-sched-sp property was removed in commit aed6864035b1 ("net: stmmac: platform: Delete a redundant condition branch"). This property is still in use in the following DT (and it will be removed in a separate patch series): - arch/arm64/boot/dts/freescale/imx8mp-beacon-som.dtsi - arch/arm64/boot/dts/freescale/imx8mp-evk.dts - arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi - arch/arm64/boot/dts/qcom/sa8540p-ride.dts - arch/arm64/boot/dts/qcom/sa8775p-ride.dts There is no problem if that property is still used in the DTs above, since, as seen above, it is a default property of the driver. ==================== Link: https://lore.kernel.org/r/20240429092654.31390-1-f.suligoi@asem.it Signed-off-by: Jakub Kicinski <kuba@kernel.org>