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| author | Arun Easi <aeasi@marvell.com> | 2019-06-21 09:50:22 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-06-27 00:09:18 -0400 |
| commit | 6a81533d616fe581b0d421ee6db3319eeac9486d (patch) | |
| tree | 6d4d1ae6016352c11f95a62e5ee3ccfc9d9b7520 /net/sched/cls_basic.c | |
| parent | f5258d6e01f3c707d9ba70b2a14a158a6fadef11 (diff) | |
scsi: qla2xxx: Fix kernel crash after disconnecting NVMe devices
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffffc050d10c>] qla_nvme_unregister_remote_port+0x6c/0xf0 [qla2xxx]
PGD 800000084cf41067 PUD 84d288067 PMD 0
Oops: 0000 [#1] SMP
Call Trace:
[<ffffffff98abcfdf>] process_one_work+0x17f/0x440
[<ffffffff98abdca6>] worker_thread+0x126/0x3c0
[<ffffffff98abdb80>] ? manage_workers.isra.26+0x2a0/0x2a0
[<ffffffff98ac4f81>] kthread+0xd1/0xe0
[<ffffffff98ac4eb0>] ? insert_kthread_work+0x40/0x40
[<ffffffff9918ad37>] ret_from_fork_nospec_begin+0x21/0x21
[<ffffffff98ac4eb0>] ? insert_kthread_work+0x40/0x40
RIP [<ffffffffc050d10c>] qla_nvme_unregister_remote_port+0x6c/0xf0 [qla2xxx]
The crash is due to a bad entry in the nvme_rport_list. This list is not
protected, and when a remoteport_delete callback is called, driver
traverses the list and crashes.
Actually, the list could be removed and driver could traverse the main
fcport list instead. Fix does exactly that.
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'net/sched/cls_basic.c')
0 files changed, 0 insertions, 0 deletions