audit: type=1804 audit(1543826992.835:2140): pid=8477 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor0" name="/root/syzkaller-testdir892769523/syzkaller.558oxz/527/bus" dev="sda1" ino=16507 res=1
WARNING: CPU: 1 PID: 8848 at fs/ext4/inode.c:3928 ext4_set_page_dirty+0x58c/0x780 fs/ext4/inode.c:3928
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 8848 Comm: syz-executor0 Not tainted 4.20.0-rc1-next-20181109+ #110
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:ext4_set_page_dirty+0x58c/0x780 fs/ext4/inode.c:3928
Code: 8b 85 b0 fe ff ff 4c 8d 70 ff e9 9f fc ff ff e8 6a d9 65 ff 48 c7 c6 e0 9b 3a 88 48 89 df e8 7b ff 96 ff 0f 0b e8 54 d9 65 ff <0f> 0b e9 b3 fe ff ff e8 48 d9 65 ff 4d 8d 75 c0 48 b8 00 00 00 00
RSP: 0018:ffff8801d883e150 EFLAGS: 00010293
RAX: ffff8801d8fae1c0 RBX: ffffea0006db25c0 RCX: ffffffff8219ce0d
RDX: 0000000000000000 RSI: ffffffff8219cf5c RDI: 0000000000000007
RBP: ffff8801d883e2a8 R08: ffff8801d8fae1c0 R09: 0000000000000007
R10: 0000000000000000 R11: ffff8801d8fae1c0 R12: 1ffff1003b107c2c
R13: 0000000000000000 R14: 0000000000000001 R15: ffffea0006db25c8
 set_page_dirty+0x632/0x1030 mm/page-writeback.c:2553
 set_page_dirty_lock+0x116/0x190 mm/page-writeback.c:2578
 dio_bio_complete+0x5ad/0x890 fs/direct-io.c:559
 dio_await_completion fs/direct-io.c:580 [inline]
 do_blockdev_direct_IO+0x3ffd/0xa340 fs/direct-io.c:1390
 __blockdev_direct_IO+0x9d/0xc6 fs/direct-io.c:1419
 ext4_direct_IO_read fs/ext4/inode.c:3867 [inline]
 ext4_direct_IO+0x114c/0x2220 fs/ext4/inode.c:3899
 generic_file_read_iter+0x4d7/0x2d70 mm/filemap.c:2268
 ext4_file_read_iter+0x18b/0x3c0 fs/ext4/file.c:77
 call_read_iter include/linux/fs.h:1861 [inline]
 new_sync_read fs/read_write.c:406 [inline]
 __vfs_read+0x6ac/0x9b0 fs/read_write.c:418
 vfs_read+0x17f/0x3c0 fs/read_write.c:452
 ksys_pread64+0x181/0x1b0 fs/read_write.c:626
 __do_sys_pread64 fs/read_write.c:636 [inline]
 __se_sys_pread64 fs/read_write.c:633 [inline]
 __x64_sys_pread64+0x97/0xf0 fs/read_write.c:633
 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:00007fb914baac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000011
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457569
RDX: 0000000000001000 RSI: 0000000020002000 RDI: 0000000000000007
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb914bab6d4
R13: 00000000004c37d2 R14: 00000000004d5b60 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..