[LU-16725] crash at qmt_free_lqe_gd+0xa/0x1f0

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Severity: 3
• Assignee: Hongchao Zhang
• Reporter: Hongchao Zhang

Description

[525870.649517] BUG: unable to handle kernel NULL pointer dereference at           (null)
[525870.651577] IP: [<ffffffffc1529c3a>] qmt_free_lqe_gd+0xa/0x1f0 [lquota]
[525870.653399] PGD 0 
[525870.654492] Oops: 0000 [#1] SMP 
[525870.678528] CPU: 11 PID: 21026 Comm: ldlm_cn02_005 Kdump: loaded 3.10.0-1160.71.1.el7_lustre.x86_64 #1
[525870.711079] Call Trace:
[525870.712322]  [<ffffffffc15220ef>] qmt_lvbo_free+0x6f/0x370 [lquota]
[525870.714101]  [<ffffffffc18ebef3>] mdt_lvbo_free+0x123/0x140 [mdt]
[525870.715922]  [<ffffffffc107d8f2>] ldlm_resource_putref+0x192/0x260 [ptlrpc]
[525870.717787]  [<ffffffffc109efd7>] ldlm_request_cancel+0x447/0x7a0 [ptlrpc]
[525870.719620]  [<ffffffffc10a3732>] ldlm_handle_cancel+0x232/0x2b0 [ptlrpc]
[525870.721417]  [<ffffffffc10a3d58>] ldlm_cancel_handler+0x5a8/0x6f0 [ptlrpc]
[525870.723391]  [<ffffffffc10d5f83>] ptlrpc_server_handle_request+0x253/0xc40 [ptlrpc]
[525870.727023]  [<ffffffffc10dad7a>] ptlrpc_main+0xc4a/0x1cb0 [ptlrpc]
[525870.733704]  [<ffffffff8b6c5f91>] kthread+0xd1/0xe0

Issue Links

• is related to: LU-16341 unable to handle kernel NULL in qmt_site_recalc_cb
• is related to: LU-16772 Protect lqe_glbl_data in qmt_site_recalc_cb with mutex
• is related to: LU-15021 sanity-quota test_55: crash in qmt_seed_glbe_all()