NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ------------[ cut here ]------------ WARNING: CPU: 0 PID: 9788 at fs/nilfs2/dat.c:167 nilfs_dat_prepare_end+0x1e8/0x2e0 fs/nilfs2/dat.c:167 Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 PID: 9788 Comm: syz-executor.3 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:nilfs_dat_prepare_end+0x1e8/0x2e0 fs/nilfs2/dat.c:167 RSP: 0018:ffff88808b4e7658 EFLAGS: 00010212 RAX: 0000000000040000 RBX: ffff88808b4e76c0 RCX: ffffc90008bfa000 RDX: 00000000000014d6 RSI: ffffffff826e0b88 RDI: ffff8880478be1b0 RBP: ffff88808b4e76d8 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffffe R13: ffff8880478a4a38 R14: ffff8880478a4a38 R15: ffff88808e139ae8 nilfs_bmap_prepare_end_ptr fs/nilfs2/bmap.h:220 [inline] nilfs_direct_delete+0x1b7/0x250 fs/nilfs2/direct.c:164 nilfs_bmap_do_delete+0x1d8/0x280 fs/nilfs2/bmap.c:185 nilfs_bmap_do_truncate fs/nilfs2/bmap.c:273 [inline] nilfs_bmap_truncate+0xe9/0x280 fs/nilfs2/bmap.c:306 nilfs_truncate_bmap+0x101/0x2c0 fs/nilfs2/inode.c:867 nilfs_truncate+0x213/0x450 fs/nilfs2/inode.c:898 nilfs_setattr+0x1d8/0x220 fs/nilfs2/inode.c:993 notify_change+0x56b/0xd10 fs/attr.c:315 do_truncate+0xff/0x1a0 fs/open.c:63 handle_truncate fs/namei.c:3010 [inline] do_last fs/namei.c:3437 [inline] path_openat+0x1dcc/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f7b07ea00f9 RSP: 002b:00007f7b06412168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f7b07fbff80 RCX: 00007f7b07ea00f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 00007f7b07efbae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff5fed91ef R14: 00007f7b06412300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..