System crashed with "Assertion failure in journal_commit_transaction()" message
Issue:
System crashed with following panic message:
Assertion failure in journal_commit_transaction() at fs/jbd/commit.c:485: \ "commit_transaction->t_nr_buffers <= commit_transaction->t_outstanding_credits" ----------- [cut here ] --------- [please bite here ] --------- Kernel BUG at fs/jbd/commit.c:485 invalid opcode: 0000 [1] SMP last sysfs file: /devices/pci0000:20/0000:20:01.0/0000:21:01.0/0000:22:06.1/irq CPU 1 Pid: 2840, comm: kjournald Not tainted 2.6.18-128.1.10.el5 #1 RIP: 0010:[Environment:] [ ] \ :jbd:journal_commit_transaction+0x692/0x10e6 RSP: 0018:ffff81026da81de0 EFLAGS: 00010286 RAX: 000000000000009d RBX: ffff8103ffd9754c RCX: 0000000000000000 RDX: 00000000000000ff RSI: 0000000000000000 RDI: ffffffff802f7aa0 RBP: ffff8103ffd97400 R08: ffffffff802f7aa8 R09: 0000000000000046 R10: ffff81026da81a90 R11: 0000000000000280 R12: 0000000000000000 R13: ffff81025ef9f3c0 R14: 0000000000000000 R15: ffff8103fb2e3000 FS: 00002b55a855e670(0000) GS:ffff81010e1117c0(0000) knlGS:00000000eb779b90 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 00000000006408a0 CR3: 000000006bba0000 CR4: 00000000000006e0 Process kjournald (pid: 2840, threadinfo ffff81026da80000, task ffff8103fb14f040) Stack: ffff8103fb2e3000 0000000000002695 ffff810300000000 0000000000000000 0000000300000000 ffff81010e116100 0000000000000286 ffffffff8003d525 ffff8103ffd97590 00000000ffffffff 0000000000000286 ffffffff8004abc9 Call Trace: []lock_timer_base+0x1b/0x3c []try_to_del_timer_sync+0x51/0x5a []:jbd:kjournald+0xc1/0x213 [] autoremove_wake_function+0x0/0x2e [] keventd_create_kthread+0x0/0xc4 [] :jbd:kjournald+0x0/0x213 [] keventd_create_kthread+0x0/0xc4 [] kthread+0xfe/0x132 [] child_rip+0xa/0x11 [] keventd_create_kthread+0x0/0xc4 [] kthread+0x0/0x132 [] child_rip+0x0/0x11 Code: 0f 0b 68 74 8e 03 88 c2 e5 01 45 31 e4 45 31 ff c7 44 24 18 RIP [ ] :jbd:journal_commit_transaction+0x692/0x10e6 RSP
- Red Hat Enterprise Linux (RHEL), including:
- Red Hat Enterprise Linux 5 (RHEL4) - all versions
- Red Hat Enterprise Linux 5 (RHEL5) - all current versions
- EXT4 filesystems are in use.
Fixes will are planned to be released via erratas for RHEL 5.3, 5.6, and 5.8. A fix is also planned to be included in RHEL 5.9.
Root Cause:
A bug has been discovered that allows a counter within the journal_commit_transaction code to go negative, which triggers the assert and causes a kernel panic.
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