------------[ cut here ]------------ AppArmor WARN cred_label: ((!blob)): WARNING: CPU: 0 PID: 31912 at security/apparmor/include/cred.h:30 cred_label security/apparmor/include/cred.h:30 [inline] WARNING: CPU: 0 PID: 31912 at security/apparmor/include/cred.h:30 apparmor_cred_free+0x12f/0x1a0 security/apparmor/lsm.c:62 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 31912 Comm: syz-executor3 Not tainted 5.0.0-rc2-next-20190117 #14 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:cred_label security/apparmor/include/cred.h:30 [inline] RIP: 0010:apparmor_cred_free+0x12f/0x1a0 security/apparmor/lsm.c:62 Code: 7c 88 48 c7 c7 80 d2 7c 88 e8 9d 69 f2 fd 0f 0b eb a9 e8 a4 40 29 fe 48 c7 c6 40 e2 7c 88 48 c7 c7 80 d2 7c 88 e8 81 69 f2 fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 80 38 00 75 4a 4c 8b 2c 25 00 RSP: 0018:ffff8880ae6079f8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff81688726 RDI: 0000000000000006 RBP: ffff8880ae607a18 R08: ffff88808ef74300 R09: ffff88808ef74bc8 R10: ffff88808ef74300 R11: 0000000000000000 R12: ffff88808a07e600 R13: ffff88808a07e600 R14: ffff88808a07e688 R15: dffffc0000000000 security_cred_free+0x4b/0xf0 security/security.c:1490 put_cred_rcu+0x21f/0x6e0 kernel/cred.c:118 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2486 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2799 [inline] rcu_core+0xc4a/0x1680 kernel/rcu/tree.c:2780 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:766 [inline] RIP: 0010:lock_is_held_type+0x17e/0x210 kernel/locking/lockdep.c:3900 Code: 00 00 00 fc ff df 41 c7 85 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 75 63 48 83 3d c9 ef 2e 08 00 74 30 48 89 df 57 9d <0f> 1f 44 00 00 48 83 c4 08 44 89 e0 5b 41 5c 41 5d 5d c3 48 83 c4 RSP: 0018:ffff88804e367728 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff132507e RBX: 0000000000000282 RCX: dffffc0000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff88804e367748 R08: ffff88821a00d690 R09: ffffed101328c159 R10: ffffed101328c158 R11: ffff888099460ac3 R12: 0000000000000000 R13: ffff88808ef74300 R14: 0000000000000108 R15: 1ffff11009c6cf3f lock_is_held include/linux/lockdep.h:337 [inline] ___might_sleep+0x248/0x310 kernel/sched/core.c:6116 __might_sleep+0x95/0x190 kernel/sched/core.c:6104 __ext4_handle_dirty_metadata+0x39/0x570 fs/ext4/ext4_jbd2.c:264 __ext4_new_inode+0x268f/0x6eb0 fs/ext4/ialloc.c:1070 ext4_symlink+0x4a9/0x1110 fs/ext4/namei.c:3096 vfs_symlink fs/namei.c:4126 [inline] vfs_symlink+0x378/0x5d0 fs/namei.c:4112 do_symlinkat+0x239/0x2c0 fs/namei.c:4153 __do_sys_symlink fs/namei.c:4172 [inline] __se_sys_symlink fs/namei.c:4170 [inline] __x64_sys_symlink+0x59/0x80 fs/namei.c:4170 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457dc7 Code: 0f 1f 00 b8 5c 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 2d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 58 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 0d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffda0ff9078 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000457dc7 RDX: 00007ffda0ff90f7 RSI: 00000000004bd896 RDI: 00007ffda0ff90e0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000017 R10: 0000000000000075 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000003e3 R15: 0000000000000003 Kernel Offset: disabled Rebooting in 86400 seconds..