NILFS (loop3): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds audit: type=1804 audit(1678139017.202:92): pid=19281 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir1893468126/syzkaller.8rrQnn/352/file0/bus" dev="loop3" ino=12 res=1 WARNING: CPU: 0 PID: 19281 at include/linux/backing-dev.h:340 inode_to_wb include/linux/backing-dev.h:340 [inline] WARNING: CPU: 0 PID: 19281 at include/linux/backing-dev.h:340 account_page_dirtied+0x8cc/0xbb0 mm/page-writeback.c:2420 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 19281 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 audit: type=1804 audit(1678139017.212:93): pid=19299 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.3" name="/root/syzkaller-testdir1893468126/syzkaller.8rrQnn/352/file0/bus" dev="loop3" ino=12 res=1 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:inode_to_wb include/linux/backing-dev.h:340 [inline] RIP: 0010:account_page_dirtied+0x8cc/0xbb0 mm/page-writeback.c:2420 Code: 88 01 00 00 be ff ff ff ff 48 8d 78 70 e8 ec e1 ca ff 31 ff 89 c3 89 c6 e8 f1 b3 e2 ff 85 db 0f 85 39 f9 ff ff e8 74 b2 e2 ff <0f> 0b e9 2d f9 ff ff e8 68 b2 e2 ff 4c 89 e6 4c 89 ef e8 9d b3 2d RSP: 0018:ffff88804255f118 EFLAGS: 00010012 RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90007a43000 RDX: 0000000000001716 RSI: ffffffff817fd2fc RDI: 0000000000000005 RBP: ffff88803eda6b48 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffffea000277ef80 R13: ffff88803eda69c0 R14: ffff88803eda6838 R15: ffffea000277ef88 __set_page_dirty+0x7f/0x3e0 fs/buffer.c:582 mark_buffer_dirty+0x424/0x5c0 fs/buffer.c:1111 nilfs_btree_commit_convert_and_insert fs/nilfs2/btree.c:1812 [inline] nilfs_btree_convert_and_insert+0xed5/0x1250 fs/nilfs2/btree.c:1877 nilfs_bmap_do_insert fs/nilfs2/bmap.c:111 [inline] nilfs_bmap_insert+0x2a1/0x3f0 fs/nilfs2/bmap.c:147 nilfs_mdt_insert_new_block fs/nilfs2/mdt.c:44 [inline] nilfs_mdt_create_block fs/nilfs2/mdt.c:93 [inline] nilfs_mdt_get_block+0x59a/0xd40 fs/nilfs2/mdt.c:254 nilfs_palloc_get_block+0xc4/0x2b0 fs/nilfs2/alloc.c:216 nilfs_palloc_get_entry_block+0x17b/0x230 fs/nilfs2/alloc.c:318 nilfs_dat_prepare_entry fs/nilfs2/dat.c:43 [inline] nilfs_dat_prepare_alloc fs/nilfs2/dat.c:69 [inline] nilfs_dat_prepare_alloc+0x61/0xb0 fs/nilfs2/dat.c:61 nilfs_bmap_prepare_alloc_ptr fs/nilfs2/bmap.h:183 [inline] nilfs_direct_insert+0x3cb/0x4e0 fs/nilfs2/direct.c:122 nilfs_bmap_do_insert fs/nilfs2/bmap.c:121 [inline] nilfs_bmap_insert+0x27a/0x3f0 fs/nilfs2/bmap.c:147 nilfs_get_block+0x4d5/0x970 fs/nilfs2/inode.c:96 __block_write_begin_int+0x46c/0x17b0 fs/buffer.c:1978 __block_write_begin fs/buffer.c:2028 [inline] block_write_begin+0x58/0x2e0 fs/buffer.c:2087 nilfs_write_begin+0xa5/0x1b0 fs/nilfs2/inode.c:267 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f63076660f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6305bd8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6307785f80 RCX: 00007f63076660f9 RDX: 0000000000000009 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 00007f63076c1ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff923876af R14: 00007f6305bd8300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..