NILFS (loop1): discard dirty block: blocknr=0, size=1024 NILFS (loop1): discard dirty block: blocknr=18446744073709551615, size=1024 NILFS (loop1): discard dirty block: blocknr=18446744073709551615, size=1024 NILFS (loop1): discard dirty block: blocknr=18446744073709551615, size=1024 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8000 at fs/buffer.c:1149 mark_buffer_dirty+0x347/0x480 fs/buffer.c:1149 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 1 PID: 8000 Comm: syz-executor.1 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x21d/0x451 kernel/panic.c:247 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171 __warn+0xdf/0x1e0 kernel/panic.c:603 report_bug+0x208/0x250 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 RIP: 0010:mark_buffer_dirty+0x347/0x480 fs/buffer.c:1149 RSP: 0018:ffff8880b49df9b8 EFLAGS: 00010297 RAX: ffff8880b0b12540 RBX: ffff8880532c8540 RCX: 0000000000003792 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880532c8540 RBP: ffff8880532e8220 R08: ffffffff8b9c1810 R09: 00000000000406f7 R10: ffff8880b0b12e18 R11: ffff8880b0b12540 R12: dffffc0000000000 R13: ffff8880532f76f8 R14: ffff8880532c8540 R15: ffff8880532e8230 nilfs_segctor_collect_dirty_files fs/nilfs2/segment.c:1979 [inline] nilfs_segctor_do_construct+0x2af/0x79c0 fs/nilfs2/segment.c:2038 nilfs_segctor_construct+0x6db/0x8e0 fs/nilfs2/segment.c:2394 nilfs_segctor_write_out fs/nilfs2/segment.c:2717 [inline] nilfs_segctor_destroy fs/nilfs2/segment.c:2750 [inline] nilfs_detach_log_writer+0x398/0x980 fs/nilfs2/segment.c:2830 nilfs_put_super+0x3f/0x190 fs/nilfs2/super.c:489 generic_shutdown_super+0x144/0x370 fs/super.c:446 kill_block_super+0x95/0xe0 fs/super.c:1161 deactivate_locked_super+0x6c/0xd0 fs/super.c:319 deactivate_super+0x7f/0xa0 fs/super.c:350 cleanup_mnt+0x186/0x2c0 fs/namespace.c:1183 task_work_run+0x11f/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f8cf8ec3567 RSP: 002b:00007ffe56ff90e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8cf8ec3567 RDX: 00007ffe56ff91ba RSI: 000000000000000a RDI: 00007ffe56ff91b0 RBP: 00007ffe56ff91b0 R08: 00000000ffffffff R09: 00007ffe56ff8f80 R10: 0000555556ac0903 R11: 0000000000000246 R12: 00007f8cf8f1cb24 R13: 00007ffe56ffa270 R14: 0000555556ac0810 R15: 00007ffe56ffa2b0 Kernel Offset: disabled Rebooting in 86400 seconds..