------------[ cut here ]------------ kernel BUG at mm/filemap.c:1619! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.4.0-rc4-syzkaller-00078-g929ed21dfdb6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:folio_end_writeback+0x391/0x3b0 mm/filemap.c:1619 Code: ef e8 a3 d1 26 00 e9 82 fe ff ff 4c 89 e7 e8 b6 d1 26 00 e9 c8 fc ff ff 48 89 ef e8 a9 d1 26 00 e9 d5 fd ff ff e8 8f 08 d4 ff <0f> 0b e8 98 d1 26 00 e9 11 fe ff ff 48 89 df e8 8b d1 26 00 e9 80 RSP: 0018:ffffc90000147c68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000001cc8700 RCX: 0000000000000100 RDX: ffff88801665bb80 RSI: ffffffff81b03b91 RDI: 0000000000000001 RBP: ffffea0001cc87c0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0001cc87f4 R13: ffff8880701b4978 R14: 0000000000000000 R15: ffffea0001cc87c0 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020075000 CR3: 000000007a976000 CR4: 0000000000350ef0 Call Trace: end_buffer_async_write+0x284/0x340 fs/buffer.c:417 end_bio_bh_io_sync+0xde/0x130 fs/buffer.c:2730 bio_endio+0x5af/0x6c0 block/bio.c:1608 req_bio_endio block/blk-mq.c:761 [inline] blk_update_request+0x5c5/0x1620 block/blk-mq.c:906 blk_mq_end_request+0x59/0x4c0 block/blk-mq.c:1023 lo_complete_rq+0x1c6/0x280 drivers/block/loop.c:370 blk_complete_reqs+0xad/0xe0 block/blk-mq.c:1101 __do_softirq+0x1d4/0x905 kernel/softirq.c:571 run_ksoftirqd kernel/softirq.c:939 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:931 smpboot_thread_fn+0x659/0x9e0 kernel/smpboot.c:164 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_end_writeback+0x391/0x3b0 mm/filemap.c:1619 Code: ef e8 a3 d1 26 00 e9 82 fe ff ff 4c 89 e7 e8 b6 d1 26 00 e9 c8 fc ff ff 48 89 ef e8 a9 d1 26 00 e9 d5 fd ff ff e8 8f 08 d4 ff <0f> 0b e8 98 d1 26 00 e9 11 fe ff ff 48 89 df e8 8b d1 26 00 e9 80 RSP: 0018:ffffc90000147c68 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000001cc8700 RCX: 0000000000000100 RDX: ffff88801665bb80 RSI: ffffffff81b03b91 RDI: 0000000000000001 RBP: ffffea0001cc87c0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0001cc87f4 R13: ffff8880701b4978 R14: 0000000000000000 R15: ffffea0001cc87c0 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020075000 CR3: 000000007a976000 CR4: 0000000000350ef0