[LU-7062] general protection fault: _ldlm_lock_debug+0x1f4/0x670

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Labels: patch
• Severity: 3
• Assignee: WC Triage
• Reporter: Andriy Skulysh

Description

general protection fault: 0000 1 SMP

last sysfs file: /sys/devices/system/cpu/online

CPU 0

Modules linked in: osc(U) lmv(U) mgc(U) lustre(U) lov(U) mdc(U) fid(U) fld(U) ksocklnd(U) ptlrpc(U) obdclass(U) lnet(U) sha512_generic sha256_generic libcfs(U) nfs lockd fscache auth_rpcgss nfs_acl sunrpc ipt_REJECT ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 virtio_balloon virtio_net i2c_piix4 i2c_core ext4 jbd2 mbcache virtio_blk virtio_pci virtio_ring virtio pata_acpi ata_generic ata_piix dm_mirror dm_region_hash dm_log dm_mod [last unloaded: nf_defrag_ipv4]

Pid: 6104, comm: ldlm_bl_02 Not tainted 2.6.32-431.17.1.x2.0.60.x86_64 #1 Red Hat KVM

RIP: 0010:[<ffffffffa05c77d4>] [<ffffffffa05c77d4>] _ldlm_lock_debug+0x1f4/0x670 [ptlrpc]

RSP: 0000:ffff88011ace7cb0 EFLAGS: 00010246

RAX: ffffffffa069b8c1 RBX: ffff880102f8b480 RCX: 0000000000000018

RDX: 5a5a5a5a5a5a5a5a RSI: 00000000ffffff9d RDI: 0000000000000005

RBP: ffff88011ace7df0 R08: 0000000000000001 R09: 00000000000054fd

R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffa06a93c0

R13: ffffffffa06c6de0 R14: ffff880102b0bcc0 R15: 0000000000000000

FS: 0000000000000000(0000) GS:ffff880028200000(0000) knlGS:0000000000000000

CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b

CR2: 00007f011916beac CR3: 0000000101f53000 CR4: 00000000000006f0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000

DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400

Process ldlm_bl_02 (pid: 6104, threadinfo ffff88011ace6000, task ffff880119116ae0)

Stack:

ffff88011ace7ce0 ffff880119116b18 ffff88011b6900c8 ffff8800282168e8

<d> ffff88011ace7cf0 ffffffff8105b040 ffff88011b6900b8 ffff8800282168e8

<d> ffff88011ace7d50 ffffffff810096f0 ffff88011b6900b8 0000000000000000

Call Trace:

[<ffffffff8105b040>] ? __dequeue_entity+0x30/0x50

[<ffffffff810096f0>] ? __switch_to+0xd0/0x320

[<ffffffff815254fe>] ? thread_return+0x4e/0x760

[<ffffffffa05eee6d>] ldlm_handle_bl_callback+0x2ad/0x400 [ptlrpc]

[<ffffffffa05f0214>] ldlm_bl_thread_main+0x454/0x630 [ptlrpc]

[<ffffffff81061dc0>] ? default_wake_function+0x0/0x20

[<ffffffffa05efdc0>] ? ldlm_bl_thread_main+0x0/0x630 [ptlrpc]

[<ffffffff8109ac66>] kthread+0x96/0xa0

[<ffffffff8100c20a>] child_rip+0xa/0x20

[<ffffffff8109abd0>] ? kthread+0x0/0xa0

[<ffffffff8100c200>] ? child_rip+0x0/0x20

Code: 00 4c 8b 93 80 01 00 00 44 8b 8b 88 01 00 00 be 9d ff ff ff 74 04 41 8b 77 40 48 8b 53 48 45 8b 86 88 00 00 00 8b 7b 40 48 8b 12 <48> 8b 12 48 8b 4a 10 48 89 44 24 70 48 8d 55 80 48 8b 83 00 01