BUG at fs/jfs/jfs_logmgr.c:2298 assert(bp->l_flag & lbmRELEASE) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_logmgr.c:2298! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 21 Comm: ksoftirqd/1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:lbmIODone+0x1622/0x1670 fs/jfs/jfs_logmgr.c:2298 Code: 84 31 2e 07 0f 0b e8 7d d6 8e fe 48 c7 c7 20 39 c6 8a 48 c7 c6 20 34 c6 8a ba fa 08 00 00 48 c7 c1 a0 42 c6 8a e8 5e 31 2e 07 <0f> 0b e8 57 d6 8e fe 48 c7 c7 20 39 c6 8a 48 c7 c6 20 34 c6 8a ba RSP: 0018:ffffc900001b7ab8 EFLAGS: 00010046 RAX: 000000000000003f RBX: 0000000000000020 RCX: 5543e9bc44896900 RDX: 0000000000000100 RSI: 0000000080000101 RDI: 0000000000000000 RBP: ffff88802e86b108 R08: ffffc900001b77c7 R09: 1ffff92000036ef8 R10: dffffc0000000000 R11: fffff52000036ef9 R12: ffff88802e86b100 R13: dffffc0000000000 R14: 0000000000000a06 R15: ffff88807b250a78 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0df9d9f000 CR3: 000000002f355000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: req_bio_endio block/blk-mq.c:782 [inline] blk_update_request+0x593/0xe30 block/blk-mq.c:927 blk_mq_end_request+0x3a/0x70 block/blk-mq.c:1052 blk_complete_reqs block/blk-mq.c:1132 [inline] blk_done_softirq+0x100/0x150 block/blk-mq.c:1137 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596 run_ksoftirqd+0xa4/0x100 kernel/softirq.c:968 smpboot_thread_fn+0x64a/0xa40 kernel/smpboot.c:164 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:lbmIODone+0x1622/0x1670 fs/jfs/jfs_logmgr.c:2298 Code: 84 31 2e 07 0f 0b e8 7d d6 8e fe 48 c7 c7 20 39 c6 8a 48 c7 c6 20 34 c6 8a ba fa 08 00 00 48 c7 c1 a0 42 c6 8a e8 5e 31 2e 07 <0f> 0b e8 57 d6 8e fe 48 c7 c7 20 39 c6 8a 48 c7 c6 20 34 c6 8a ba RSP: 0018:ffffc900001b7ab8 EFLAGS: 00010046 RAX: 000000000000003f RBX: 0000000000000020 RCX: 5543e9bc44896900 RDX: 0000000000000100 RSI: 0000000080000101 RDI: 0000000000000000 RBP: ffff88802e86b108 R08: ffffc900001b77c7 R09: 1ffff92000036ef8 R10: dffffc0000000000 R11: fffff52000036ef9 R12: ffff88802e86b100 R13: dffffc0000000000 R14: 0000000000000a06 R15: ffff88807b250a78 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0df9d9f000 CR3: 000000002f355000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400