[LU-17469] GPF in ll_writepages()-> lov_io_init+0x25b/0x510

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Zhenyu Xu
• Reporter: Zhenyu Xu

Description

[4801767.508547] general protection fault: 0000 1 SMP

[4801767.536819] CPU: 9 PID: 27793 Comm: kworker/u48:1 Kdump: loaded Tainted: G OE ------------ T 3.10.0-1160.95.1.el7_lustre.ddn17.x86_64 #1
[4801767.542665] Workqueue: writeback bdi_writeback_workfn (flush-exa1-ffff965dacbc)
[4801767.545093] task: ffff9659cbc6d280 ti: ffff967373448000 task.ti: ffff967373448000
[4801767.547493] RIP: 0010:[<ffffffffc1142e9b>] [<ffffffffc1142e9b>] lov_io_init+0x25b/0x510 [lov]
[4801767.550052] RSP: 0018:ffff96737344ba68 EFLAGS: 00010282
[4801767.552162] RAX: ffff965b3a47c400 RBX: ffff9652a2f1c5c0 RCX: ffff965b3a47c540
[4801767.554492] RDX: 5a5a5a5a5a5a5a5a RSI: ffffffffc115ba60 RDI: ffff966644678970
[4801767.556808] RBP: ffff96737344bab0 R08: ffff967204be1300 R09: ffff965556461ea8
[4801767.559102] R10: ffff965556461e20 R11: ffffffffffffffff R12: ffff967204be12e0
[4801767.561392] R13: ffff965c58283248 R14: ffff967204be12e0 R15: 0000000000000008
[4801767.563675] FS: 0000000000000000(0000) GS:ffff9673f1240000(0000) knlGS:0000000000000000
[4801767.566067] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[4801767.568144] CR2: 00007f2d86191978 CR3: 0000001c91610000 CR4: 0000000000760fe0
[4801767.570386] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[4801767.572624] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[4801767.574826] PKRU: 00000000
[4801767.576433] Call Trace:
[4801767.578012] [<ffffffffc12cb058>] ? vvp_io_init+0xd8/0x480 [lustre]
[4801767.580054] [<ffffffffc12c8e1f>] ? vvp_io_fini+0x2f/0x6f0 [lustre]
[4801767.582085] [<ffffffffc0c1ba0b>] cl_io_init0.isra.12+0xbb/0x1a0 [obdclass]
[4801767.584174] [<ffffffffc0c1bbb3>] cl_io_init+0x43/0x90 [obdclass]
[4801767.586116] [<ffffffffc1276e18>] cl_sync_file_range+0x1b8/0x380 [lustre]
[4801767.588121] [<ffffffffc129d497>] ll_writepages+0x77/0x1e0 [lustre]
[4801767.590052] [<ffffffff939d6a41>] do_writepages+0x21/0x50
[4801767.591845] [<ffffffff93a8cc90>] __writeback_single_inode+0x40/0x260
[4801767.593753] [<ffffffff938cc745>] ? wake_up_bit+0x25/0x30
[4801767.595517] [<ffffffff93a8d85c>] writeback_sb_inodes+0x1cc/0x430
[4801767.597349] [<ffffffff93a8db67>] __writeback_inodes_wb+0xa7/0xe0
[4801767.599162] [<ffffffff93a8e043>] wb_writeback+0x263/0x2f0
[4801767.600875] [<ffffffff939d6180>] ? bdi_dirty_limit+0x40/0xe0
[4801767.602598] [<ffffffff93a8eb4c>] bdi_writeback_workfn+0x1cc/0x470
[4801767.604360] [<ffffffff938c32ef>] process_one_work+0x17f/0x440
[4801767.606082] [<ffffffff938c4436>] worker_thread+0x126/0x3c0
[4801767.607736] [<ffffffff938c4310>] ? manage_workers.isra.26+0x2b0/0x2b0
[4801767.609481] [<ffffffff938cb621>] kthread+0xd1/0xe0
[4801767.610991] [<ffffffff938cb550>] ? insert_kthread_work+0x40/0x40
[4801767.612658] [<ffffffff93fc61dd>] ret_from_fork_nospec_begin+0x7/0x21
[4801767.614344] [<ffffffff938cb550>] ? insert_kthread_work+0x40/0x40
[4801767.615962] Code: 48 8d 0c 89 48 c1 e1 05 48 01 c1 73 1a e9 65 fe ff ff 66 0f 1f 44 00 00 48 05 a0 00 00 00 48 39 c8 0f 87 50 fe ff ff 48 8b 50 18 <f6> 42 1d 08 74 e7 41 80 8c 24 4e 01 00 00 02 48 8b 40 18 0f b6

Issue Links

• is related to: LU-16025 Read past file size after truncate from another client