kauditd_printk_skb: 25 callbacks suppressed audit: type=1400 audit(1540644432.491:274): avc: denied { map } for pid=28237 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=0 INFO: rcu_preempt self-detected stall on CPU 0-...: (10499 ticks this GP) idle=c82/140000000000001/0 softirq=67614/67614 fqs=5227 (t=10500 jiffies g=25016 c=25015 q=1011) NMI backtrace for cpu 0 CPU: 0 PID: 28199 Comm: syz-executor2 Not tainted 4.14.78+ #26 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x11b lib/dump_stack.c:53 nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline] rcu_dump_cpu_stacks+0x171/0x1bf kernel/rcu/tree.c:1396 print_cpu_stall kernel/rcu/tree.c:1542 [inline] check_cpu_stall kernel/rcu/tree.c:1610 [inline] __rcu_pending kernel/rcu/tree.c:3373 [inline] rcu_pending kernel/rcu/tree.c:3435 [inline] rcu_check_callbacks.cold.56+0x478/0xd99 kernel/rcu/tree.c:2775 update_process_times+0x24/0x60 kernel/time/timer.c:1588 tick_sched_handle.isra.8+0x73/0x150 kernel/time/tick-sched.c:161 tick_sched_timer+0x7e/0x160 kernel/time/tick-sched.c:1321 __run_hrtimer kernel/time/hrtimer.c:1259 [inline] __hrtimer_run_queues+0x2d0/0xc10 kernel/time/hrtimer.c:1323 hrtimer_interrupt+0x19a/0x440 kernel/time/hrtimer.c:1357 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] smp_apic_timer_interrupt+0x13a/0x5f0 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787 RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x60 kernel/kcov.c:74 RSP: 0018:ffff8801c60972e8 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff10 RAX: ffff8801c3a31780 RBX: ffff8801c60975f8 RCX: 0000000000000001 RDX: ffffffffe0400000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff8801cda35d80 R08: 000000000000000a R09: 000000000f082d78 R10: ffffed0043fffe01 R11: 000000b5c2333f59 R12: ffffffffa311cc80 R13: 0000000000000008 R14: ffff8801c60973c8 R15: dffffc0000000000 __read_once_size include/linux/compiler.h:183 [inline] atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline] atomic_long_read include/asm-generic/atomic-long.h:45 [inline] perf_event_count kernel/events/core.c:3720 [inline] perf_output_read_group kernel/events/core.c:5872 [inline] perf_output_read+0x547/0xfb0 kernel/events/core.c:5909 perf_output_sample+0x10dd/0x1780 kernel/events/core.c:5951 __perf_event_output kernel/events/core.c:6261 [inline] perf_event_output_forward+0x121/0x230 kernel/events/core.c:6274 __perf_event_overflow+0x116/0x320 kernel/events/core.c:7510 perf_swevent_overflow+0x166/0x1f0 kernel/events/core.c:7586 perf_swevent_event+0x19c/0x270 kernel/events/core.c:7619 do_perf_sw_event kernel/events/core.c:7727 [inline] ___perf_sw_event+0x296/0x480 kernel/events/core.c:7758 __perf_sw_event+0x3f/0x70 kernel/events/core.c:7770 perf_sw_event include/linux/perf_event.h:1041 [inline] __do_page_fault+0x77f/0xb60 arch/x86/mm/fault.c:1466 page_fault+0x22/0x50 arch/x86/entry/entry_64.S:1104 RIP: 0010:copy_user_enhanced_fast_string+0x7/0x10 arch/x86/lib/copy_user_64.S:180 RSP: 0018:ffff8801c6097b98 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000001000 RCX: 00000000000001c0 RDX: 0000000000001000 RSI: 000000002021f000 RDI: ffff8801d098fe40 RBP: 000000002021e1c0 R08: 0000000000000000 R09: 0000000000000040 R10: ffffed003a131fff R11: ffff8801d098ffff R12: ffff8801d098f000 R13: 00007ffffffff000 R14: 000000002021f1c0 R15: ffff8801d098f000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline] copyin+0x99/0xc0 lib/iov_iter.c:146 copy_page_from_iter_iovec lib/iov_iter.c:290 [inline] copy_page_from_iter+0x320/0x7a0 lib/iov_iter.c:731 pipe_write+0x21a/0xd30 fs/pipe.c:434 call_write_iter include/linux/fs.h:1782 [inline] new_sync_write fs/read_write.c:471 [inline] __vfs_write+0x417/0x5c0 fs/read_write.c:484 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:593 [inline] SyS_write+0xc2/0x1a0 fs/read_write.c:585 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457569 RSP: 002b:00007efd73f14c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 00000000fffffef3 RSI: 00000000200001c0 RDI: 0000000000000007 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007efd73f156d4 R13: 00000000004c2883 R14: 00000000004d8568 R15: 00000000ffffffff INFO: rcu_sched detected stalls on CPUs/tasks: 0-...: (10501 ticks this GP) idle=c82/140000000000001/0 softirq=67614/67614 fqs=5227 (detected by 1, t=10550 jiffies, g=15731, c=15730, q=55) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 28199 Comm: syz-executor2 Not tainted 4.14.78+ #26 task: ffff8801c3a31780 task.stack: ffff8801c6090000 RIP: 0010:hlock_class kernel/locking/lockdep.c:155 [inline] RIP: 0010:mark_lock+0x66/0xf80 kernel/locking/lockdep.c:3164 RSP: 0018:ffff8801c6097128 EFLAGS: 00000806 RAX: 0000000000000274 RBX: ffff8801c3a31fb0 RCX: 1ffff100387463fa RDX: 0000000000000000 RSI: ffff8801c3a31fb0 RDI: ffff8801c3a31780 RBP: ffff8801c3a31fb0 R08: 000000000000000a R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000040 R13: 0000000000000006 R14: ffff8801c3a31780 R15: ffff8801c3a31fd0 FS: 00007efd73f15700(0000) GS:ffff8801dba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002021f000 CR3: 00000001d56f6006 CR4: 00000000001606b0 DR0: ffffffffffffffff DR1: 00000000200001c0 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: mark_held_locks+0xc2/0x130 kernel/locking/lockdep.c:2850 __trace_hardirqs_on_caller kernel/locking/lockdep.c:2879 [inline] trace_hardirqs_on_caller+0x381/0x520 kernel/locking/lockdep.c:2926 trace_hardirqs_on_thunk+0x1a/0x1c retint_kernel+0x2d/0x2d RIP: 0010:memcpy_erms+0x8/0x10 arch/x86/lib/memcpy_64.S:54 RSP: 0018:ffff8801c60972e8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: ffff8801c86c1f18 RBX: ffff8801c60975f8 RCX: 0000000000000000 RDX: 0000000000000008 RSI: ffff8801c60973c8 RDI: ffff8801c86c1f20 RBP: ffff8801cda35d80 R08: ffffed00390d83e4 R09: ffffed00390d83e3 R10: ffffed00390d83e3 R11: ffff8801c86c1f1f R12: 0000000000000000 R13: 0000000000000008 R14: ffff8801c60973c8 R15: dffffc0000000000 memcpy include/linux/string.h:344 [inline] memcpy_common kernel/events/internal.h:172 [inline] __output_copy kernel/events/internal.h:176 [inline] perf_output_read_group kernel/events/core.c:5876 [inline] perf_output_read+0x688/0xfb0 kernel/events/core.c:5909 perf_output_sample+0x10dd/0x1780 kernel/events/core.c:5951 __perf_event_output kernel/events/core.c:6261 [inline] perf_event_output_forward+0x121/0x230 kernel/events/core.c:6274 __perf_event_overflow+0x116/0x320 kernel/events/core.c:7510 perf_swevent_overflow+0x166/0x1f0 kernel/events/core.c:7586 perf_swevent_event+0x19c/0x270 kernel/events/core.c:7619 do_perf_sw_event kernel/events/core.c:7727 [inline] ___perf_sw_event+0x296/0x480 kernel/events/core.c:7758 __perf_sw_event+0x3f/0x70 kernel/events/core.c:7770 perf_sw_event include/linux/perf_event.h:1041 [inline] __do_page_fault+0x77f/0xb60 arch/x86/mm/fault.c:1466 page_fault+0x22/0x50 arch/x86/entry/entry_64.S:1104 RIP: 0010:copy_user_enhanced_fast_string+0x7/0x10 arch/x86/lib/copy_user_64.S:180 RSP: 0018:ffff8801c6097b98 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000001000 RCX: 00000000000001c0 RDX: 0000000000001000 RSI: 000000002021f000 RDI: ffff8801d098fe40 RBP: 000000002021e1c0 R08: 0000000000000000 R09: 0000000000000040 R10: ffffed003a131fff R11: ffff8801d098ffff R12: ffff8801d098f000 R13: 00007ffffffff000 R14: 000000002021f1c0 R15: ffff8801d098f000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline] copyin+0x99/0xc0 lib/iov_iter.c:146 copy_page_from_iter_iovec lib/iov_iter.c:290 [inline] copy_page_from_iter+0x320/0x7a0 lib/iov_iter.c:731 pipe_write+0x21a/0xd30 fs/pipe.c:434 call_write_iter include/linux/fs.h:1782 [inline] new_sync_write fs/read_write.c:471 [inline] __vfs_write+0x417/0x5c0 fs/read_write.c:484 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:593 [inline] SyS_write+0xc2/0x1a0 fs/read_write.c:585 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457569 RSP: 002b:00007efd73f14c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 00000000fffffef3 RSI: 00000000200001c0 RDI: 0000000000000007 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007efd73f156d4 R13: 00000000004c2883 R14: 00000000004d8568 R15: 00000000ffffffff Code: 84 c0 74 08 3c 01 0f 8e 03 04 00 00 0f b7 43 20 66 a9 ff 1f 74 7d 48 ba 00 00 00 00 00 fc ff df 4c 89 f9 48 c1 e9 03 0f b6 14 11 <84> d2 74 09 80 fa 03 0f 8e e4 03 00 00 25 ff 1f 00 00 48 69 e8