Buffer I/O error on dev loop0, logical block 7, lost async page write
print_req_error: I/O error, dev loop0, sector 64
Buffer I/O error on dev loop0, logical block 8, lost async page write
print_req_error: I/O error, dev loop0, sector 72
Buffer I/O error on dev loop0, logical block 9, lost async page write
WARNING: CPU: 0 PID: 21714 at fs/buffer.c:1086 mark_buffer_dirty+0x6a3/0x8d0 fs/buffer.c:1086
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 21714 Comm: syz-executor5 Not tainted 4.20.0-rc5+ #362
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 panic+0x2ad/0x55c kernel/panic.c:188
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969
RIP: 0010:mark_buffer_dirty+0x6a3/0x8d0 fs/buffer.c:1086
Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 1c 02 00 00 49 8b 3c 24 be 04 00 00 00 e8 e7 00 fd ff e9 23 fb ff ff e8 1d 9d 9f ff <0f> 0b e9 23 fa ff ff e8 11 9d 9f ff 0f 0b e9 4a fa ff ff e8 05 9d
RSP: 0018:ffff8881b9c67028 EFLAGS: 00010293
RAX: ffff8881d83526c0 RBX: ffff8881c19a9d20 RCX: ffffffff81dff8c4
RDX: 0000000000000000 RSI: ffffffff81dffea3 RDI: 0000000000000007
RBP: ffff8881b9c67180 R08: ffff8881d83526c0 R09: ffffea000760c940
R10: ffffed103b064bff R11: ffff8881d8325fff R12: 0000000000000000
R13: 1ffff1103738ce07 R14: ffff8881b9c67158 R15: 0000000000000000
 __block_commit_write.isra.37+0x1c6/0x3f0 fs/buffer.c:2039
 block_write_end+0xab/0x230 fs/buffer.c:2151
 blkdev_write_end+0xd6/0x2f0 fs/block_dev.c:594
 generic_perform_write+0x4ca/0x6a0 mm/filemap.c:3151
 __generic_file_write_iter+0x26e/0x630 mm/filemap.c:3265
 blkdev_write_iter+0x23d/0x450 fs/block_dev.c:1916
 call_write_iter include/linux/fs.h:1857 [inline]
 do_iter_readv_writev+0x8b0/0xa80 fs/read_write.c:680
 do_iter_write+0x185/0x5f0 fs/read_write.c:959
 vfs_iter_write+0x77/0xb0 fs/read_write.c:972
 iter_file_splice_write+0x90d/0x1050 fs/splice.c:749
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x128/0x190 fs/splice.c:1018
 splice_direct_to_actor+0x318/0x8f0 fs/splice.c:973
 do_splice_direct+0x2d4/0x420 fs/splice.c:1061
 do_sendfile+0x62a/0xe20 fs/read_write.c:1439
 __do_sys_sendfile64 fs/read_write.c:1500 [inline]
 __se_sys_sendfile64 fs/read_write.c:1486 [inline]
 __x64_sys_sendfile64+0x1fd/0x250 fs/read_write.c:1486
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb4c8fe3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002000005 R11: 0000000000000246 R12: 00007fb4c8fe46d4
R13: 00000000004c3c2a R14: 00000000004d63d0 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..