On Mon, 2018-02-05 at 10:27 +0800, Guanglei Li wrote:
> Scenario:
> 1. Port down and do fail over
> 2. Ap do rds_bind syscall
>
> PID: 47039 TASK: ffff89887e2fe640 CPU: 47 COMMAND: "kworker/u:6"
> #0 [ffff898e35f159f0] machine_kexec at ffffffff8103abf9
> #1 [ffff898e35f15a60] crash_kexec at ffffffff810b96e3
> #2 [ffff898e35f15b30] oops_end at ffffffff8150f518
> #3 [ffff898e35f15b60] no_context at ffffffff8104854c
> #4 [ffff898e35f15ba0] __bad_area_nosemaphore at ffffffff81048675
> #5 [ffff898e35f15bf0] bad_area_nosemaphore at ffffffff810487d3
> #6 [ffff898e35f15c00] do_page_fault at ffffffff815120b8
> #7 [ffff898e35f15d10] page_fault at ffffffff8150ea95
> [exception RIP: unknown or invalid address]
> RIP: 0000000000000000 RSP: ffff898e35f15dc8 RFLAGS: 00010282
> RAX: 00000000fffffffe RBX: ffff889b77f6fc00 RCX:ffffffff81c99d88
> RDX: 0000000000000000 RSI: ffff896019ee08e8 RDI:ffff889b77f6fc00
> RBP: ffff898e35f15df0 R8: ffff896019ee08c8 R9:0000000000000000
> R10: 0000000000000400 R11: 0000000000000000 R12:ffff896019ee08c0
> R13: ffff889b77f6fe68 R14: ffffffff81c99d80 R15: ffffffffa022a1e0
> ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
> #8 [ffff898e35f15dc8] cma_ndev_work_handler at ffffffffa022a228 [rdma_cm]
> #9 [ffff898e35f15df8] process_one_work at ffffffff8108a7c6
> #10 [ffff898e35f15e58] worker_thread at ffffffff8108bda0
> #11 [ffff898e35f15ee8] kthread at ffffffff81090fe6
>
> PID: 45659 TASK: ffff880d313d2500 CPU: 31 COMMAND: "oracle_45659_ap"
> #0 [ffff881024ccfc98] __schedule at ffffffff8150bac4
> #1 [ffff881024ccfd40] schedule at ffffffff8150c2cf
> #2 [ffff881024ccfd50] __mutex_lock_slowpath at ffffffff8150cee7
> #3 [ffff881024ccfdc0] mutex_lock at ffffffff8150cdeb
> #4 [ffff881024ccfde0] rdma_destroy_id at ffffffffa022a027 [rdma_cm]
> #5 [ffff881024ccfe10] rds_ib_laddr_check at ffffffffa0357857 [rds_rdma]
> #6 [ffff881024ccfe50] rds_trans_get_preferred at ffffffffa0324c2a [rds]
> #7 [ffff881024ccfe80] rds_bind at ffffffffa031d690 [rds]
> #8 [ffff881024ccfeb0] sys_bind at ffffffff8142a670
>
> PID: 45659 PID: 47039
> rds_ib_laddr_check
> /* create id_priv with a null event_handler */
> rdma_create_id
> rdma_bind_addr
> cma_acquire_dev
> /* add id_priv to cma_dev->id_list */
> cma_attach_to_dev
> cma_ndev_work_handler
> /* event_hanlder is null */
> id_priv->id.event_handler
>
> Signed-off-by: Guanglei Li <guanglei.li@xxxxxxxxxx>
> Signed-off-by: Honglei Wang <honglei.wang@xxxxxxxxxx>
> Reviewed-by: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
> Reviewed-by: Yanjun Zhu <yanjun.zhu@xxxxxxxxxx>
> Reviewed-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
> Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxxxxxx>
RDS patches normally go through Dave's tree, so for the RDMA aspects of
this patch:
Acked-by: Doug Ledford <dledford@xxxxxxxxxx>
--
Doug Ledford <dledford@xxxxxxxxxx>
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