audit: type=1804 audit(2000000066.150:71): pid=10957 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-executor2" name="/root/syzkaller-testdir950338886/syzkaller.CZdchk/110/file0" dev="sda1" ino=16871 res=1
audit: type=1804 audit(2000000066.150:72): pid=10957 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor2" name="/root/syzkaller-testdir950338886/syzkaller.CZdchk/110/file0" dev="sda1" ino=16871 res=1
WARNING: CPU: 1 PID: 10967 at fs/overlayfs/dir.c:263 ovl_instantiate+0x369/0x400 fs/overlayfs/dir.c:263
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 10967 Comm: syz-executor1 Not tainted 4.20.0-rc7+ #164
audit: type=1804 audit(2000000066.180:73): pid=10957 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-executor2" name="/root/syzkaller-testdir950338886/syzkaller.CZdchk/110/file0" dev="sda1" ino=16871 res=1
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+0x1d3/0x2c6 lib/dump_stack.c:113
audit: type=1804 audit(2000000066.180:74): pid=10960 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor2" name="/root/syzkaller-testdir950338886/syzkaller.CZdchk/110/file0" dev="sda1" ino=16871 res=1
 panic+0x2ad/0x55c kernel/panic.c:188
 __warn.cold.8+0x20/0x45 kernel/panic.c:540
audit: type=1800 audit(2000000066.370:75): pid=10970 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed(directio) comm="syz-executor2" name="file0" dev="sda1" ino=16876 res=0
 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
audit: type=1804 audit(2000000066.370:76): pid=10970 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-executor2" name="/root/syzkaller-testdir950338886/syzkaller.CZdchk/111/file0" dev="sda1" ino=16876 res=1
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:ovl_instantiate+0x369/0x400 fs/overlayfs/dir.c:263
Code: c3 89 c6 e8 19 42 f1 fe 85 db 0f 85 9e 00 00 00 e8 fc 40 f1 fe 4c 89 e7 45 31 f6 e8 e1 f6 46 ff e9 ec fe ff ff e8 e7 40 f1 fe <0f> 0b e9 e0 fe ff ff e8 db 40 f1 fe 0f 0b e9 63 ff ff ff e8 7f 4a
audit: type=1804 audit(2000000066.370:77): pid=10970 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=invalid_pcr cause=ToMToU comm="syz-executor2" name="/root/syzkaller-testdir950338886/syzkaller.CZdchk/111/file0" dev="sda1" ino=16876 res=1
RSP: 0018:ffff888182df7338 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff888182df73d0 RCX: ffffc9000806b000
RDX: 000000000000e582 RSI: ffffffff828d76f9 RDI: 0000000000000007
RBP: ffff888182df73f8 R08: ffff888185378380 R09: ffffed10305bee1a
R10: ffffed10305bee1a R11: 0000000000000003 R12: ffff8881bd6c4a20
R13: ffff888182df7370 R14: ffffffffffffff8c R15: 0000000000000000
audit: type=1800 audit(2000000066.370:78): pid=10972 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed(directio) comm="syz-executor2" name="file0" dev="sda1" ino=16876 res=0
 ovl_create_over_whiteout fs/overlayfs/dir.c:518 [inline]
 ovl_create_or_link+0xad6/0x1560 fs/overlayfs/dir.c:582
audit: type=1804 audit(2000000066.370:79): pid=10972 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-executor2" name="/root/syzkaller-testdir950338886/syzkaller.CZdchk/112/file0" dev="sda1" ino=16876 res=1
 ovl_create_object+0x2e9/0x3a0 fs/overlayfs/dir.c:616
 ovl_create+0x2b/0x30 fs/overlayfs/dir.c:630
 lookup_open+0x1319/0x1b90 fs/namei.c:3234
 do_last fs/namei.c:3324 [inline]
 path_openat+0x15e4/0x5160 fs/namei.c:3534
 do_filp_open+0x255/0x380 fs/namei.c:3564
 do_sys_open+0x568/0x700 fs/open.c:1063
 ksys_open include/linux/syscalls.h:1279 [inline]
 __do_sys_creat fs/open.c:1121 [inline]
 __se_sys_creat fs/open.c:1119 [inline]
 __x64_sys_creat+0x61/0x80 fs/open.c:1119
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457669
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:00007f209febcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457669
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f209febd6d4
R13: 00000000004bdd13 R14: 00000000004cd7f8 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..