audit: type=1804 audit(1555807851.335:3252): pid=18512 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir976896115/syzkaller.OjnjOP/323/bus" dev="sda1" ino=17035 res=1
WARNING: CPU: 1 PID: 18779 at fs/ext4/inode.c:3898 ext4_set_page_dirty+0x30b/0x430 fs/ext4/inode.c:3898
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 18779 Comm: syz-executor.4 Not tainted 4.19.36 #4
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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x263/0x51d kernel/panic.c:185
 __warn.cold+0x20/0x54 kernel/panic.c:540
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x204/0x360 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:997
RIP: 0010:ext4_set_page_dirty+0x30b/0x430 fs/ext4/inode.c:3898
Code: ff e8 99 8e 83 ff 49 8d 5f ff e9 e5 fd ff ff e8 8b 8e 83 ff 48 c7 c6 20 93 5a 87 4c 89 e7 e8 9c 93 ab ff 0f 0b e8 75 8e 83 ff <0f> 0b e9 56 ff ff ff e8 69 8e 83 ff 4c 89 ea 48 b8 00 00 00 00 00
kobject: 'loop0' (0000000086212207): kobject_uevent_env
RSP: 0018:ffff888083dff9e0 EFLAGS: 00010293
RAX: ffff88807fd366c0 RBX: 0000000000000000 RCX: ffffffff81e7b5f0
RDX: 0000000000000000 RSI: ffffffff81e7b69b RDI: 0000000000000001
RBP: ffff888083dffa08 R08: ffff88807fd366c0 R09: ffffed10100222d8
R10: ffffed10100222d7 R11: ffff8880801116b9 R12: ffffea0002004440
R13: ffffea0002004448 R14: 0000000000000000 R15: ffff888091f8d6e0
 set_page_dirty+0x2e9/0x820 mm/page-writeback.c:2572
kobject: 'loop0' (0000000086212207): fill_kobj_path: path = '/devices/virtual/block/loop0'
 set_page_dirty_lock+0x88/0xc0 mm/page-writeback.c:2597
kobject: 'loop5' (00000000282c57e0): kobject_uevent_env
 process_vm_rw_pages mm/process_vm_access.c:51 [inline]
 process_vm_rw_single_vec mm/process_vm_access.c:124 [inline]
 process_vm_rw_core.isra.0+0x527/0xb20 mm/process_vm_access.c:220
 process_vm_rw+0x21f/0x240 mm/process_vm_access.c:288
kobject: 'loop5' (00000000282c57e0): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __do_sys_process_vm_writev mm/process_vm_access.c:310 [inline]
 __se_sys_process_vm_writev mm/process_vm_access.c:305 [inline]
 __x64_sys_process_vm_writev+0xe3/0x1a0 mm/process_vm_access.c:305
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f81a5edac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
kobject: 'loop2' (0000000009e7b2ab): kobject_uevent_env
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000458c29
RDX: 0000000000000001 RSI: 0000000020000580 RDI: 00000000000005c4
RBP: 000000000073bfa0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000020000600 R11: 0000000000000246 R12: 00007f81a5edb6d4
R13: 00000000004c598b R14: 00000000004d9d10 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..