diff options
| author | Bart Van Assche <[email protected]> | 2016-02-11 11:10:09 -0800 |
|---|---|---|
| committer | Doug Ledford <[email protected]> | 2016-02-29 17:12:36 -0500 |
| commit | 387add460dc2f61567fa127bd76dab8ba6833234 (patch) | |
| tree | 6095535d3363c22c4e71c4119fb0990d0fb0fa4c /net/lapb/lapb_subr.c | |
| parent | 539b3248d7f5f0341e3797e734ba653bccfaf498 (diff) | |
IB/srpt: Fix wait list processing
Since the wait list is not protected against concurrent access
it must be processed from the context of the completion handler.
Replace the wait list processing code in the IB CM RTU callback
handler by code that triggers a completion handler. This patch
fixes the following rare crash:
WARNING: CPU: 2 PID: 78656 at lib/list_debug.c:53 __list_del_entry+0x67/0xd0()
list_del corruption, ffff88041ae404b8->next is LIST_POISON1 (dead000000000100)
Call Trace:
[<ffffffff81251c6b>] dump_stack+0x4f/0x74
[<ffffffff810574ab>] warn_slowpath_common+0x8b/0xd0
[<ffffffff81057591>] warn_slowpath_fmt+0x41/0x70
[<ffffffff8126f007>] __list_del_entry+0x67/0xd0
[<ffffffff8126f081>] list_del+0x11/0x40
[<ffffffffa0265242>] srpt_cm_handler+0x172/0x1a4 [ib_srpt]
[<ffffffffa0370370>] cm_process_work+0x20/0xf0 [ib_cm]
[<ffffffffa0370dae>] cm_establish_handler+0xbe/0x110 [ib_cm]
[<ffffffffa03733e7>] cm_work_handler+0x67/0xd0 [ib_cm]
[<ffffffff8107184d>] process_one_work+0x1bd/0x460
[<ffffffff81073148>] worker_thread+0x118/0x420
[<ffffffff81078444>] kthread+0xe4/0x100
[<ffffffff8151caff>] ret_from_fork+0x3f/0x70
Signed-off-by: Bart Van Assche <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Alex Estrin <[email protected]>
Cc: Sagi Grimberg <[email protected]>
Signed-off-by: Doug Ledford <[email protected]>
Diffstat (limited to 'net/lapb/lapb_subr.c')
0 files changed, 0 insertions, 0 deletions