WARNING: CPU: 0 PID: 31400 at fs/overlayfs/dir.c:263 ovl_instantiate+0x293/0x2f0 fs/overlayfs/dir.c:263
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 31400 Comm: syz-executor.2 Not tainted 5.0.0-rc8-next-20190301 #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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:ovl_instantiate+0x293/0x2f0 fs/overlayfs/dir.c:263
Code: 04 31 ff 89 c3 89 c6 e8 5b 87 1a ff 85 db 75 63 e8 d2 85 1a ff 4c 89 e7 45 31 e4 e8 27 5d 61 ff e9 20 ff ff ff e8 bd 85 1a ff <0f> 0b 41 89 dc e9 11 ff ff ff e8 ae 85 1a ff 0f 0b eb 86 48 89 85
RSP: 0018:ffff8880520a7a98 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffffffffffffff8c RCX: ffffc9000a215000
RDX: 000000000001437e RSI: ffffffff82563c43 RDI: 0000000000000007
RBP: ffff8880520a7b70 R08: ffff88804e0f0000 R09: ffffed100a414f2c
R10: ffffed100a414f2b R11: 0000000000000003 R12: ffff8880a1286720
R13: ffff8880847e22c0 R14: 0000000000000000 R15: ffff8880520a7b48
 ovl_create_over_whiteout fs/overlayfs/dir.c:518 [inline]
 ovl_create_or_link+0xabb/0x1250 fs/overlayfs/dir.c:582
 ovl_create_object+0x231/0x2c0 fs/overlayfs/dir.c:616
 ovl_symlink+0x25/0x30 fs/overlayfs/dir.c:651
 vfs_symlink fs/namei.c:4125 [inline]
 vfs_symlink+0x378/0x5d0 fs/namei.c:4111
 do_symlinkat+0x22b/0x290 fs/namei.c:4152
 __do_sys_symlink fs/namei.c:4171 [inline]
 __se_sys_symlink fs/namei.c:4169 [inline]
 __x64_sys_symlink+0x59/0x80 fs/namei.c:4169
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e29
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:00007f274d305c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457e29
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000500
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f274d3066d4
R13: 00000000004c6491 R14: 00000000004db8d0 R15: 00000000ffffffff
Kernel Offset: disabled