WARNING: CPU: 0 PID: 11256 at net/ceph/messenger.c:3073 clear_standby+0x12f/0x160 net/ceph/messenger.c:3073 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 11256 Comm: syz-executor0 Not tainted 5.0.0-rc2-next-20190121 #16 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+0x1db/0x2d0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x48 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:clear_standby+0x12f/0x160 net/ceph/messenger.c:3073 Code: de e8 b5 03 b9 f9 48 85 db 0f 84 39 ff ff ff e8 07 02 b9 f9 0f 0b e9 2d ff ff ff e8 2b 54 fd f9 e9 67 ff ff ff e8 f1 01 b9 f9 <0f> 0b eb a5 e8 38 54 fd f9 e9 f6 fe ff ff 4c 89 ef e8 2b 54 fd f9 RSP: 0018:ffff8880573df7d8 EFLAGS: 00010212 RAX: 0000000000040000 RBX: ffff88804cd61ea8 RCX: ffffc90005deb000 RDX: 000000000001d41d RSI: ffffffff87c9375f RDI: 0000000000000007 RBP: ffff8880573df7f0 R08: ffff888055a86200 R09: ffffed10099ac406 R10: ffff8880573df7f0 R11: ffff88804cd6202f R12: 0000000000000001 R13: ffff88804cd61fe0 R14: ffff8880573df8a0 R15: ffff88804cd62028 ceph_con_send+0x450/0x610 net/ceph/messenger.c:3108 __send_prepared_auth_request+0x155/0x1b0 net/ceph/mon_client.c:111 __open_session+0x3d9/0x570 net/ceph/mon_client.c:199 ceph_monc_open_session+0x1a2/0x360 net/ceph/mon_client.c:448 __ceph_open_session+0xe2/0x7e0 net/ceph/ceph_common.c:714 ceph_real_mount fs/ceph/super.c:913 [inline] ceph_mount+0x10d2/0x1c80 fs/ceph/super.c:1097 legacy_get_tree+0xf2/0x200 fs/fs_context.c:590 vfs_get_tree+0x123/0x450 fs/super.c:1481 do_new_mount fs/namespace.c:2610 [inline] do_mount+0x1622/0x2fa0 fs/namespace.c:2932 ksys_mount+0xdb/0x150 fs/namespace.c:3148 __do_sys_mount fs/namespace.c:3162 [inline] __se_sys_mount fs/namespace.c:3159 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3159 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458099 Code: 6d b7 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 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3bcce65c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000458099 RDX: 00000000200001c0 RSI: 0000000020000180 RDI: 0000000020000240 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3bcce666d4 R13: 00000000004c3df1 R14: 00000000004d6da8 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..