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path: root/drivers/scsi/qla2xxx/qla_init.c
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2018-08-02scsi: qla2xxx: Fix login retry countQuinn Tran
Login retry count was not properly decrementing which lead to endless retry. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-08-02scsi: qla2xxx: Fix N2N link re-connectQuinn Tran
In case of N2N connect, sg_reset for bus/device/host was causing driver and firmware state to go out of sync. This patch fixes this link instablity when reconnect is attempted after link flap. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-08-02scsi: qla2xxx: Cleanup for N2N codeHimanshu Madhani
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-14Merge tag 'scsi-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "This is a set of minor (and safe changes) that didn't make the initial pull request plus some bug fixes" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: qla2xxx: Mask off Scope bits in retry delay scsi: qla2xxx: Fix crash on qla2x00_mailbox_command scsi: aic7xxx: aic79xx: fix potential null pointer dereference on ahd scsi: mpt3sas: Add an I/O barrier scsi: qla2xxx: Fix setting lower transfer speed if GPSC fails scsi: hpsa: disable device during shutdown scsi: sd_zbc: Fix sd_zbc_check_zone_size() error path scsi: aacraid: remove bogus GFP_DMA32 specifies
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-05scsi: qla2xxx: Fix setting lower transfer speed if GPSC failsHimanshu Madhani
This patch prevents driver from setting lower default speed of 1 GB/sec, if the switch does not support Get Port Speed Capabilities (GPSC) command. Setting this default speed results into much lower write performance for large sequential WRITE. This patch modifies driver to check for gpsc_supported flags and prevents driver from issuing MBC_SET_PORT_PARAM (001Ah) to set default speed of 1 GB/sec. If driver does not send this mailbox command, firmware assumes maximum supported link speed and will operate at the max speed. Cc: stable@vger.kernel.org Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reported-by: Eda Zhou <ezhou@redhat.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Tested-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-08scsi: qla2xxx: Prevent relogin loop by removing stale codehimanshu.madhani@cavium.com
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-08scsi: qla2xxx: Remove stale debug value for login_retry flagQuinn Tran
Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-08scsi: qla2xxx: Move GPSC and GFPNID out of session managementQuinn Tran
Move GPSC & GFPNID commands out of session management to reduce time lag in reporting the session state to remote port. These commands are not essential when it comes to maintaining the rport state. Delay sending these commands after rport state is set to Online. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-08scsi: qla2xxx: Reduce redundant ADISC command for RSCNsQuinn Tran
For each RSCN that triggers a rescan of the fabric, ADISC is used to revalidate an existing session. If the RSCN is not affecting all existing sessions, then driver should not send redundant ADISC for all existing sessions. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-05-08scsi: qla2xxx: Fix sending ADISC command for loginQuinn Tran
This patch fixes login_retry login for ADISC command. when login_retry count reaches 0, further attempt to send ADISC command is ignored by the code. Remove this redundant login_retry count check from qla24xx_fcport_handle_login() [mkp: fix typo] Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-09scsi: qla2xxx: Fix race condition between iocb timeout and initialisationBen Hutchings
qla2x00_init_timer() calls add_timer() on the iocb timeout timer, which means the timeout function pointer and any data that the function depends on must be initialised beforehand. Move this initialisation before each call to qla2x00_init_timer(). In some cases qla2x00_init_timer() initialises a completion structure needed by the timeout function, so move the call to add_timer() after that. Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-09scsi: qla2xxx: Avoid double completion of abort commandBen Hutchings
qla2x00_tmf_sp_done() now deletes the timer that will run qla2x00_tmf_iocb_timeout(), but doesn't check whether the timer already expired. Check the return value from del_timer() to avoid calling complete() a second time. Fixes: 4440e46d5db7 ("[SCSI] qla2xxx: Add IOCB Abort command asynchronous ...") Fixes: 1514839b3664 ("scsi: qla2xxx: Fix NULL pointer crash due to active ...") Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-04-03Merge branch 'fixes' into miscJames Bottomley
Somewhat nasty merge due to conflicts between "33b28357dd00 scsi: qla2xxx: Fix Async GPN_FT for FCP and FC-NVMe scan" and "2b5b96473efc scsi: qla2xxx: Fix FC-NVMe LUN discovery" Merge is non-trivial and has been verified by Qlogic (Cavium) Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
2018-03-21scsi: qla2xxx: Fix Async GPN_FT for FCP and FC-NVMe scanQuinn Tran
This patch combines FCP and FC-NVMe scan into single scan when driver detects FC-NVMe capability on same port. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-21scsi: qla2xxx: Fix retry for PRLI RJT with reason of BUSYDarren Trapp
Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-21scsi: qla2xxx: Remove nvme_done_listDarren Trapp
Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-21scsi: qla2xxx: Add changes for devloss timeout in driverDarren Trapp
Add support for error recovery within devloss timeout, now that FC-NVMe transport support devloss timeout. Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-21scsi: qla2xxx: Set IIDMA and fcport state before qla_nvme_register_remote()Darren Trapp
Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-12scsi: qla2xxx: Remove FC_NO_LOOP_ID for FCP and FC-NVMe DiscoveryHimanshu Madhani
Commit 7d64c39e64310 fixed regression of FCP discovery when Nport Handle is in-use and relogin is triggered. However, during FCP and FC-NVMe discovery this resulted into only discovering NVMe LUNs. This patch fixes issue where FCP and FC-NVMe protocol is used on same port where assigning FC_NO_LOOP_ID will result into discovery failure for FCP LUNs. Fixes: a084fd68e1d26 ("scsi: qla2xxx: Fix re-login for Nport Handle in use") Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-01scsi: qla2xxx: Fix FC-NVMe LUN discoveryDarren Trapp
commit a4239945b8ad ("scsi: qla2xxx: Add switch command to simplify fabric discovery") introduced regression when it did not consider FC-NVMe code path which broke NVMe LUN discovery. Fixes: a4239945b8ad ("scsi: qla2xxx: Add switch command to simplify fabric discovery") Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-01scsi: qla2xxx: ensure async flags are reset correctlyHannes Reinecke
The fcport flags FCF_ASYNC_ACTIVE and FCF_ASYNC_SENT are used to throttle the state machine, so we need to ensure to always set and unset them correctly. Not doing so will lead to the state machine getting confused and no login attempt into remote ports. Cc: Quinn Tran <quinn.tran@cavium.com> Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Fixes: 3dbec59bdf63 ("scsi: qla2xxx: Prevent multiple active discovery commands per session") Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-01scsi: qla2xxx: do not check login_state if no loop id is assignedHannes Reinecke
When no loop id is assigned in qla24xx_fcport_handle_login() the login state needs to be ignored; it will get set later on in qla_chk_n2n_b4_login(). Cc: Quinn Tran <quinn.tran@cavium.com> Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Fixes: 040036bb0bc1 ("scsi: qla2xxx: Delay loop id allocation at login") Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-01scsi: qla2xxx: Fixup locking for session deletionHannes Reinecke
Commit d8630bb95f46 ('Serialize session deletion by using work_lock') tries to fixup a deadlock when deleting sessions, but fails to take into account the locking rules. This patch resolves the situation by introducing a separate lock for processing the GNLIST response, and ensures that sess_lock is released before calling qlt_schedule_sess_delete(). Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Cc: Quinn Tran <quinn.tran@cavium.com> Fixes: d8630bb95f46 ("scsi: qla2xxx: Serialize session deletion by using work_lock") Signed-off-by: Hannes Reinecke <hare@suse.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-03-01scsi: qla2xxx: Fix NULL pointer crash due to active timer for ABTShimanshu.madhani@cavium.com
This patch fixes NULL pointer crash due to active timer running for abort IOCB. From crash dump analysis it was discoverd that get_next_timer_interrupt() encountered a corrupted entry on the timer list. #9 [ffff95e1f6f0fd40] page_fault at ffffffff914fe8f8 [exception RIP: get_next_timer_interrupt+440] RIP: ffffffff90ea3088 RSP: ffff95e1f6f0fdf0 RFLAGS: 00010013 RAX: ffff95e1f6451028 RBX: 000218e2389e5f40 RCX: 00000001232ad600 RDX: 0000000000000001 RSI: ffff95e1f6f0fdf0 RDI: 0000000001232ad6 RBP: ffff95e1f6f0fe40 R8: ffff95e1f6451188 R9: 0000000000000001 R10: 0000000000000016 R11: 0000000000000016 R12: 00000001232ad5f6 R13: ffff95e1f6450000 R14: ffff95e1f6f0fdf8 R15: ffff95e1f6f0fe10 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 Looking at the assembly of get_next_timer_interrupt(), address came from %r8 (ffff95e1f6451188) which is pointing to list_head with single entry at ffff95e5ff621178. 0xffffffff90ea307a <get_next_timer_interrupt+426>: mov (%r8),%rdx 0xffffffff90ea307d <get_next_timer_interrupt+429>: cmp %r8,%rdx 0xffffffff90ea3080 <get_next_timer_interrupt+432>: je 0xffffffff90ea30a7 <get_next_timer_interrupt+471> 0xffffffff90ea3082 <get_next_timer_interrupt+434>: nopw 0x0(%rax,%rax,1) 0xffffffff90ea3088 <get_next_timer_interrupt+440>: testb $0x1,0x18(%rdx) crash> rd ffff95e1f6451188 10 ffff95e1f6451188: ffff95e5ff621178 ffff95e5ff621178 x.b.....x.b..... ffff95e1f6451198: ffff95e1f6451198 ffff95e1f6451198 ..E.......E..... ffff95e1f64511a8: ffff95e1f64511a8 ffff95e1f64511a8 ..E.......E..... ffff95e1f64511b8: ffff95e77cf509a0 ffff95e77cf509a0 ...|.......|.... ffff95e1f64511c8: ffff95e1f64511c8 ffff95e1f64511c8 ..E.......E..... crash> rd ffff95e5ff621178 10 ffff95e5ff621178: 0000000000000001 ffff95e15936aa00 ..........6Y.... ffff95e5ff621188: 0000000000000000 00000000ffffffff ................ ffff95e5ff621198: 00000000000000a0 0000000000000010 ................ ffff95e5ff6211a8: ffff95e5ff621198 000000000000000c ..b............. ffff95e5ff6211b8: 00000f5800000000 ffff95e751f8d720 ....X... ..Q.... ffff95e5ff621178 belongs to freed mempool object at ffff95e5ff621080. CACHE NAME OBJSIZE ALLOCATED TOTAL SLABS SSIZE ffff95dc7fd74d00 mnt_cache 384 19785 24948 594 16k SLAB MEMORY NODE TOTAL ALLOCATED FREE ffffdc5dabfd8800 ffff95e5ff620000 1 42 29 13 FREE / [ALLOCATED] ffff95e5ff621080 (cpu 6 cache) Examining the contents of that memory reveals a pointer to a constant string in the driver, "abort\0", which is set by qla24xx_async_abort_cmd(). crash> rd ffffffffc059277c 20 ffffffffc059277c: 6e490074726f6261 0074707572726574 abort.Interrupt. ffffffffc059278c: 00676e696c6c6f50 6920726576697244 Polling.Driver i ffffffffc059279c: 646f6d207325206e 6974736554000a65 n %s mode..Testi ffffffffc05927ac: 636976656420676e 786c252074612065 ng device at %lx ffffffffc05927bc: 6b63656843000a2e 646f727020676e69 ...Checking prod ffffffffc05927cc: 6f20444920746375 0a2e706968632066 uct ID of chip.. ffffffffc05927dc: 5120646e756f4600 204130303232414c .Found QLA2200A ffffffffc05927ec: 43000a2e70696843 20676e696b636568 Chip...Checking ffffffffc05927fc: 65786f626c69616d 6c636e69000a2e73 mailboxes...incl ffffffffc059280c: 756e696c2f656475 616d2d616d642f78 ude/linux/dma-ma crash> struct -ox srb_iocb struct srb_iocb { union { struct {...} logio; struct {...} els_logo; struct {...} tmf; struct {...} fxiocb; struct {...} abt; struct ct_arg ctarg; struct {...} mbx; struct {...} nack; [0x0 ] } u; [0xb8] struct timer_list timer; [0x108] void (*timeout)(void *); } SIZE: 0x110 crash> ! bc ibase=16 obase=10 B8+40 F8 The object is a srb_t, and at offset 0xf8 within that structure (i.e. ffff95e5ff621080 + f8 -> ffff95e5ff621178) is a struct timer_list. Cc: <stable@vger.kernel.org> #4.4+ Fixes: 4440e46d5db7 ("[SCSI] qla2xxx: Add IOCB Abort command asynchronous handling.") Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-02-13scsi: qla2xxx: Fix double free bug after firmware timeoutQuinn Tran
This patch is based on Max's original patch. When the qla2xxx firmware is unavailable, eventually qla2x00_sp_timeout() is reached, which calls the timeout function and frees the srb_t instance. The timeout function always resolves to qla2x00_async_iocb_timeout(), which invokes another callback function called "done". All of these qla2x00_*_sp_done() callbacks also free the srb_t instance; after returning to qla2x00_sp_timeout(), it is freed again. The fix is to remove the "sp->free(sp)" call from qla2x00_sp_timeout() and add it to those code paths in qla2x00_async_iocb_timeout() which do not already free the object. This is how it looks like with KASAN: BUG: KASAN: use-after-free in qla2x00_sp_timeout+0x228/0x250 Read of size 8 at addr ffff88278147a590 by task swapper/2/0 Allocated by task 1502: save_stack+0x33/0xa0 kasan_kmalloc+0xa0/0xd0 kmem_cache_alloc+0xb8/0x1c0 mempool_alloc+0xd6/0x260 qla24xx_async_gnl+0x3c5/0x1100 Freed by task 0: save_stack+0x33/0xa0 kasan_slab_free+0x72/0xc0 kmem_cache_free+0x75/0x200 qla24xx_async_gnl_sp_done+0x556/0x9e0 qla2x00_async_iocb_timeout+0x1c7/0x420 qla2x00_sp_timeout+0x16d/0x250 call_timer_fn+0x36/0x200 The buggy address belongs to the object at ffff88278147a440 which belongs to the cache qla2xxx_srbs of size 344 The buggy address is located 336 bytes inside of 344-byte region [ffff88278147a440, ffff88278147a598) Reported-by: Max Kellermann <mk@cm4all.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Cc: Max Kellermann <mk@cm4all.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-02-12scsi: qla2xxx: Fix function argument descriptionsBart Van Assche
Bring the kernel-doc headers in sync with the function argument lists. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-02-12scsi: qla2xxx: Use %p for printing pointersBart Van Assche
Using %p instead of %lx to print a pointer allows to remove a cast. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-22scsi: qla2xxx: Fix queue ID for async abort with MultiqueueDarren Trapp
[mkp: sparse warning] Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-17scsi: qla2xxx: Fix warning for code intentation in __qla24xx_handle_gpdb_event()himanshu.madhani@cavium.com
This patch fixes following smatch warning: drivers/scsi/qla2xxx/qla_init.c:1054 __qla24xx_handle_gpdb_event() warn: inconsistent indenting Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-17scsi: qla2xxx: Fix warning in qla2x00_async_iocb_timeout()himanshu.madhani@cavium.com
This patch fixes following Smatch warning: drivers/scsi/qla2xxx/qla_init.c:130 qla2x00_async_iocb_timeout() error: we previously assumed 'fcport' could be null (see line 107) Fixes: 5c25d451163c ("scsi: qla2xxx: Fix NULL pointer access for fcport structure") Reported by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Serialize session deletion by using work_lockQuinn Tran
for session deletion, replace sess_lock with work_lock. Under certain case sess_lock is not feasiable to acquire. The lock is needed temporarily to make sure a single call to schedule of the work element. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Remove unused argument from qlt_schedule_sess_for_deletion()Quinn Tran
Immeadiate flag is not used for scheduling session deletion. Remove it to simplfy session deletion code path. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Prevent relogin trigger from sending too many commandsQuinn Tran
This patch adds check for pending work event before queueing relogin work to prevent redundant work to be active at the same time. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Prevent multiple active discovery commands per sessionQuinn Tran
Add check to allow single discovery command per session to be sent Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Delay loop id allocation at loginQuinn Tran
Delay loop id allocation to login time Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Allow relogin and session creation after resethimanshu.madhani@cavium.com
When any kind of reset is issued, current code was setting state of LOGIN pending too early. This resulted into driver not retrying relogin until pervious reloin completes. Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Add ability to use GPNFT/GNNFT for RSCN handlingQuinn Tran
add ability to use gpnft/gnnft to handle RSCN. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Properly extract ADISC error codesQuinn Tran
This patch fixes issue with extraction of ADISC error codes for decoding the error returned Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Fix GPNFT/GNNFT error handlingQuinn Tran
retry gpnft/gnnft if error is encountered. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Fix login state machine freezeQuinn Tran
Relogin stop moving forward due to improper check of scan_state flag. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Add lock protection around host lookupQuinn Tran
Host lookup via btree is currently protected by the hardware_lock. Add hardware_lock when modifying btree to store host pointer. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Add switch command to simplify fabric discoveryQuinn Tran
- add "async" gpn_ft, gnn_ft, gfpn_id, gnn_id switch commands. - For 8G and newer adapters, use async commands when it comes to fabric scan to reduce bottle neck. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Fix session cleanup for N2NQuinn Tran
When connection type is N_Port to N_Port (point-to-point), there is a possibilty where initiator will not send PLOGI request and will directly send PRLI. In N2N connection the port has higher port name sends the PLOGI but not allow to send PRLI if is a target mode. Only initiator is allowed to send PRLI. Current driver code deletes old session when it receives PLOGI request. If we will not receive PLOGI request then we will not delete old session and create new session. Add check for N2N with PRLI receive only and trigger cleanup. For this case, the cleanup requires individual cmd abort instead of using implicit logout as a broad stroke flush. Signed-off-by: Krishna Kant <krishna.kant@purestorage.com> Signed-off-by: Alexei Potashnik <alexei@purestorage.com> Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Allow target mode to accept PRLI in dual modeQuinn Tran
For Dual Mode, Initiator side of the driver finish login, target side receive PRLI, but driver terminates PRLI. This patch allows target side to go ahead and accept PRLI. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Don't call dma_free_coherent with IRQ disabled.Giridhar Malavali
The logo ELS command allocates dma coherent memory for the data payload and serialize the completions. When this command times out, the timeout routine completes the thread waiting for completion which in turn cleanup resources allocated for this ELS command processing. Don't call generic sp->free routine when this ELS command times out to avoid to double freeing of the same resources. Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Add ability to send PRLOQuinn Tran
Add ability to send Implicit PRLO to flush IOs from FW back to driver. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Add option for use reserve exch for ELSQuinn Tran
Add option to tell FW to reserve 1/2 of emergency exchanges for ELS. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Move work element processing out of DPC threadQuinn Tran
DPC thread can stall during switch scan due to slow switch response. This will stall other work element that needs attention. Moving work element processing and relogin logic out of DPC thread and into its own work queue. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-03scsi: qla2xxx: Replace GPDB with async ADISC commandQuinn Tran
Replace call to Get Port DataBase MB with PDO_FORCE_ADISC flag with async ADISC command so driver can see ADISC command has error or not. Signed-off-by: Quinn Tran <quinn.tran@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
generated by cgit (git 2.34.1) at 2024-07-02 02:02:35 +0000