------------[ cut here ]------------ WARNING: CPU: 0 PID: 18627 at fs/overlayfs/file.c:66 ovl_change_flags fs/overlayfs/file.c:66 [inline] WARNING: CPU: 0 PID: 18627 at fs/overlayfs/file.c:66 ovl_real_fdget_meta+0x4a3/0x540 fs/overlayfs/file.c:117 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 18627 Comm: syz-executor.2 Not tainted 5.6.0-rc1-next-20200214-syzkaller #0 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+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:175 [inline] fixup_bug arch/x86/kernel/traps.c:170 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:ovl_change_flags fs/overlayfs/file.c:66 [inline] RIP: 0010:ovl_real_fdget_meta+0x4a3/0x540 fs/overlayfs/file.c:117 Code: ff 4c 89 f7 e8 2e 61 2b ff e9 fb fc ff ff e8 24 61 2b ff e9 c7 fc ff ff 4c 89 f7 e8 b7 61 2b ff e9 5e fd ff ff e8 4d 59 ec fe <0f> 0b 41 bc fb ff ff ff e9 f9 fc ff ff e8 1b 61 2b ff e9 85 fb ff RSP: 0018:ffffc9001785fb68 EFLAGS: 00010212 RAX: 0000000000040000 RBX: 0000000004048000 RCX: ffffc9000cb7e000 RDX: 000000000000009f RSI: ffffffff8289a443 RDI: 0000000000000005 RBP: ffffc9001785fb98 R08: ffff888051698100 R09: 0000000000000000 R10: fffffbfff154bf68 R11: ffffffff8aa5fb47 R12: 000000000000a000 R13: ffff8880957820c0 R14: ffff888095782138 R15: ffff8880924a1488 ovl_real_fdget fs/overlayfs/file.c:124 [inline] ovl_read_iter+0x10a/0x800 fs/overlayfs/file.c:276 call_read_iter include/linux/fs.h:1895 [inline] new_sync_read+0x4d7/0x800 fs/read_write.c:414 __vfs_read+0xe1/0x110 fs/read_write.c:427 vfs_read+0x1f0/0x440 fs/read_write.c:461 ksys_read+0x14f/0x290 fs/read_write.c:587 __do_sys_read fs/read_write.c:597 [inline] __se_sys_read fs/read_write.c:595 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:595 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c6c9 Code: ad b6 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 b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fde86c7ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007fde86c7f6d4 RCX: 000000000045c6c9 RDX: 0000000000000008 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000875 R14: 00000000004cb142 R15: 000000000076bf2c Kernel Offset: disabled Rebooting in 86400 seconds..