------------[ cut here ]------------ WARNING: CPU: 1 PID: 10025 at fs/overlayfs/file.c:55 ovl_change_flags fs/overlayfs/file.c:55 [inline] WARNING: CPU: 1 PID: 10025 at fs/overlayfs/file.c:55 ovl_real_fdget_meta+0x4a3/0x540 fs/overlayfs/file.c:106 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 10025 Comm: syz-executor.3 Not tainted 5.5.0-rc6-next-20200116-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:176 [inline] fixup_bug arch/x86/kernel/traps.c:171 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:269 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:288 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:ovl_change_flags fs/overlayfs/file.c:55 [inline] RIP: 0010:ovl_real_fdget_meta+0x4a3/0x540 fs/overlayfs/file.c:106 Code: ff 4c 89 f7 e8 6e d9 2c ff e9 fb fc ff ff e8 64 d9 2c ff e9 c7 fc ff ff 4c 89 f7 e8 f7 d9 2c ff e9 5e fd ff ff e8 dd 41 ee fe <0f> 0b 41 bc fb ff ff ff e9 f9 fc ff ff e8 5b d9 2c ff e9 85 fb ff RSP: 0018:ffffc900030173e8 EFLAGS: 00010206 RAX: 0000000000040000 RBX: 0000000004149002 RCX: ffffc900104f8000 RDX: 000000000001bf70 RSI: ffffffff828755f3 RDI: 0000000000000005 RBP: ffffc90003017418 R08: ffff888097c22100 R09: 0000000000000000 R10: fffffbfff154a5c8 R11: ffffffff8aa52e47 R12: 000000000014b002 R13: ffff888098ef4780 R14: ffff888098ef47f8 R15: ffff8880925fb588 ovl_real_fdget fs/overlayfs/file.c:113 [inline] ovl_read_iter+0x11a/0x370 fs/overlayfs/file.c:238 call_read_iter include/linux/fs.h:1895 [inline] do_iter_readv_writev+0x711/0x8f0 fs/read_write.c:691 do_iter_read+0x27c/0x660 fs/read_write.c:933 vfs_readv+0xf0/0x160 fs/read_write.c:997 kernel_readv fs/splice.c:365 [inline] default_file_splice_read+0x4fb/0xa20 fs/splice.c:422 do_splice_to+0x127/0x180 fs/splice.c:892 splice_direct_to_actor+0x320/0xa30 fs/splice.c:971 do_splice_direct+0x1da/0x2a0 fs/splice.c:1080 do_sendfile+0x597/0xd00 fs/read_write.c:1464 __do_sys_sendfile64 fs/read_write.c:1519 [inline] __se_sys_sendfile64 fs/read_write.c:1511 [inline] __x64_sys_sendfile64+0x15a/0x220 fs/read_write.c:1511 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45aff9 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:00007f569059ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f569059b6d4 RCX: 000000000045aff9 RDX: 00000000200001c0 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 00008080fffffffe R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008a2 R14: 00000000004c9bce R15: 000000000075bfd4 Kernel Offset: disabled Rebooting in 86400 seconds..