BUG at fs/jfs/jfs_logmgr.c:2326 assert(bp->l_flag & lbmRELEASE) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_logmgr.c:2326! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 32434 Comm: loop2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:lbmIODone.cold+0x24/0x5b fs/jfs/jfs_logmgr.c:2326 Code: f9 e8 cb ff ff ff e8 47 9c 69 f9 48 c7 c1 80 11 9b 88 ba 16 09 00 00 48 c7 c6 00 11 9b 88 48 c7 c7 40 11 9b 88 e8 93 cd fa ff <0f> 0b e8 21 9c 69 f9 48 c7 c1 c0 11 9b 88 ba 17 09 00 00 48 c7 c6 RSP: 0000:ffff88804d0dfac0 EFLAGS: 00010086 RAX: 000000000000003f RBX: ffff8880afc8da00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1009a1bf4a RBP: 0000000000000020 R08: 000000000000003f R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000286 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f48329be000 CR3: 000000009f534000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bio_endio+0x488/0x830 block/bio.c:1780 req_bio_endio block/blk-core.c:278 [inline] blk_update_request+0x30f/0xaf0 block/blk-core.c:3112 blk_mq_end_request+0x4a/0x340 block/blk-mq.c:544 lo_complete_rq+0x201/0x2d0 drivers/block/loop.c:487 __blk_mq_complete_request block/blk-mq.c:583 [inline] blk_mq_complete_request+0x472/0x660 block/blk-mq.c:620 loop_handle_cmd drivers/block/loop.c:1931 [inline] loop_queue_work+0x274/0x20c0 drivers/block/loop.c:1940 kthread_worker_fn+0x292/0x730 kernel/kthread.c:700 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: ---[ end trace 3b2b06ca133f4633 ]--- RIP: 0010:lbmIODone.cold+0x24/0x5b fs/jfs/jfs_logmgr.c:2326 Code: f9 e8 cb ff ff ff e8 47 9c 69 f9 48 c7 c1 80 11 9b 88 ba 16 09 00 00 48 c7 c6 00 11 9b 88 48 c7 c7 40 11 9b 88 e8 93 cd fa ff <0f> 0b e8 21 9c 69 f9 48 c7 c1 c0 11 9b 88 ba 17 09 00 00 48 c7 c6 RSP: 0000:ffff88804d0dfac0 EFLAGS: 00010086 RAX: 000000000000003f RBX: ffff8880afc8da00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1009a1bf4a RBP: 0000000000000020 R08: 000000000000003f R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000286 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f48329be000 CR3: 000000009f534000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400