Mike Marciniszyn cef504c5c0 IB/hfi1: Fix panic in adaptive pio ... The following panic occurs while running ib_send_bw -a with adaptive pio turned on: [ 8551.143596] BUG: unable to handle kernel NULL pointer dereference at (null) [ 8551.152986] IP: [<ffffffffa0902a94>] pio_wait.isra.21+0x34/0x190 [hfi1] [ 8551.160926] PGD 80db21067 PUD 80bb45067 PMD 0 [ 8551.166431] Oops: 0000 [#1] SMP [ 8551.276725] task: ffff880816bf15c0 ti: ffff880812ac0000 task.ti: ffff880812ac0000 [ 8551.285705] RIP: 0010:[<ffffffffa0902a94>] pio_wait.isra.21+0x34/0x190 [hfi1] [ 8551.296462] RSP: 0018:ffff880812ac3b58 EFLAGS: 00010282 [ 8551.303029] RAX: 000000000000002d RBX: 0000000000000000 RCX: 0000000000000800 [ 8551.311633] RDX: ffff880812ac3c08 RSI: 0000000000000000 RDI: ffff8800b6665e40 [ 8551.320228] RBP: ffff880812ac3ba0 R08: 0000000000001000 R09: ffffffffa09039a0 [ 8551.328820] R10: ffff880817a0c000 R11: 0000000000000000 R12: ffff8800b6665e40 [ 8551.337406] R13: ffff880817a0c000 R14: ffff8800b6665800 R15: ffff8800b6665e40 [ 8551.355640] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8551.362674] CR2: 0000000000000000 CR3: 000000080abe8000 CR4: 00000000001406e0 [ 8551.371262] Stack: [ 8551.374119] ffff880812ac3bf0 ffff88080cf54010 ffff880800000800 ffff880812ac3c08 [ 8551.383036] ffff8800b6665800 ffff8800b6665e40 0000000000000202 ffffffffa08e7b80 [ 8551.391941] 00000001007de431 ffff880812ac3bc8 ffffffffa0904645 ffff8800b6665800 [ 8551.400859] Call Trace: [ 8551.404214] [<ffffffffa08e7b80>] ? hfi1_del_timers_sync+0x30/0x30 [hfi1] [ 8551.412417] [<ffffffffa0904645>] hfi1_verbs_send+0x215/0x330 [hfi1] [ 8551.420154] [<ffffffffa08ec126>] hfi1_do_send+0x166/0x350 [hfi1] [ 8551.427618] [<ffffffffa055a533>] rvt_post_send+0x533/0x6a0 [rdmavt] [ 8551.435367] [<ffffffffa050760f>] ib_uverbs_post_send+0x30f/0x530 [ib_uverbs] [ 8551.443999] [<ffffffffa0501367>] ib_uverbs_write+0x117/0x380 [ib_uverbs] [ 8551.452269] [<ffffffff815810ab>] ? sock_recvmsg+0x3b/0x50 [ 8551.459071] [<ffffffff81581152>] ? sock_read_iter+0x92/0xe0 [ 8551.466068] [<ffffffff81212857>] __vfs_write+0x37/0x100 [ 8551.472692] [<ffffffff81213532>] ? rw_verify_area+0x52/0xd0 [ 8551.479682] [<ffffffff81213782>] vfs_write+0xa2/0x1a0 [ 8551.486089] [<ffffffff81003176>] ? do_audit_syscall_entry+0x66/0x70 [ 8551.493891] [<ffffffff812146c5>] SyS_write+0x55/0xc0 [ 8551.500220] [<ffffffff816ae0ee>] entry_SYSCALL_64_fastpath+0x12/0x71 [ 8551.531284] RIP [<ffffffffa0902a94>] pio_wait.isra.21+0x34/0x190 [hfi1] [ 8551.539508] RSP <ffff880812ac3b58> [ 8551.544110] CR2: 0000000000000000 The priv s_sendcontext pointer was not setup properly. Fix with this patch by using the s_sendcontext and eliminating its send engine use. Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>		2016-03-17 15:55:21 -04:00
..
hfi1	IB/hfi1: Fix panic in adaptive pio	2016-03-17 15:55:21 -04:00
Kconfig	staging/rdma: remove deprecated ipath driver	2016-02-03 11:10:58 -05:00
Makefile	staging/rdma: remove deprecated ipath driver	2016-02-03 11:10:58 -05:00