audit: type=1804 audit(1576720422.009:463): pid=7994 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.0" name="/root/syzkaller-testdir085552151/syzkaller.JtZOXA/35/bus" dev="sda1" ino=16558 res=1
audit: type=1804 audit(1576720422.009:464): pid=7998 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.3" name="/root/syzkaller-testdir980915850/syzkaller.XN2vQA/37/bus" dev="sda1" ino=16573 res=1
------------[ cut here ]------------
kobject: 'loop0' (ffff8880a494ea60): kobject_uevent_env
WARNING: CPU: 0 PID: 8058 at fs/ext4/inode.c:3869 ext4_set_page_dirty+0xd0/0x110 fs/ext4/inode.c:3871
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8058 Comm: syz-executor.4 Not tainted 4.14.159-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xf7/0x13b lib/dump_stack.c:58
 panic+0x1b0/0x358 kernel/panic.c:183
 __warn.cold.8+0x25/0x2c kernel/panic.c:547
 report_bug+0x1a4/0x1f3 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 do_error_trap+0x1bd/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:ext4_set_page_dirty+0xd0/0x110 fs/ext4/inode.c:3869
RSP: 0018:ffff888099f879d8 EFLAGS: 00010246
RAX: 01fffc0000000029 RBX: ffffea0001ee18c0 RCX: 1ffff11012ad8f87
RDX: 1ffffd40003dc318 RSI: 00000000ffffffff RDI: ffffea0001ee18c0
RBP: ffff888099f879f0 R08: 0000000000000780 R09: ffff888099f87d68
R10: ffffea0001ee18c0 R11: ffff888099f87d08 R12: ffffea0001ee18c0
R13: ffffea0001ee18e0 R14: ffffffff81bd9870 R15: dffffc0000000000
 set_page_dirty+0x153/0x2a0 mm/page-writeback.c:2586
 set_page_dirty_lock+0x56/0x80 mm/page-writeback.c:2611
 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.1+0x4bd/0x9b0 mm/process_vm_access.c:223
 process_vm_rw+0x19b/0x1c0 mm/process_vm_access.c:290
 SYSC_process_vm_writev mm/process_vm_access.c:312 [inline]
 SyS_process_vm_writev+0xb/0x10 mm/process_vm_access.c:307
 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
kobject: 'loop0' (ffff8880a494ea60): fill_kobj_path: path = '/devices/virtual/block/loop0'
RIP: 0033:0x459829
RSP: 002b:00007f17396f1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000137
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459829
RDX: 0000000000000001 RSI: 0000000020000540 RDI: 000000000000008e
RBP: 000000000075c070 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000200003c0 R11: 0000000000000246 R12: 00007f17396f26d4
R13: 00000000004c6b42 R14: 00000000004dbc18 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..