audit: type=1804 audit(1547640309.750:81): pid=31739 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor4" name="/root/syzkaller-testdir038494317/syzkaller.Jow1hk/691/bus" dev="sda1" ino=17203 res=1 INFO: task syz-executor1:8025 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D20440 8025 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45649a Code: 02 89 d2 4c 8d 1c 52 4d 89 dd 49 c1 e3 03 47 0f b6 74 1a 04 45 89 f7 41 83 e6 0f 41 80 fe 02 74 12 4c 8b 51 30 4c 8b 59 28 4c <39> d2 72 c0 e9 c8 01 00 00 41 c0 ef 04 41 80 ff 01 74 06 41 80 ff RSP: 002b:00007ffc45417d70 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffc45417d70 RCX: 000000000045649a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffc45417db0 R08: 0000000000000001 R09: 0000000002a37940 R10: 0000000002a37c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 INFO: task syz-executor2:15014 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D20440 15014 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45649a Code: 02 89 d2 4c 8d 1c 52 4d 89 dd 49 c1 e3 03 47 0f b6 74 1a 04 45 89 f7 41 83 e6 0f 41 80 fe 02 74 12 4c 8b 51 30 4c 8b 59 28 4c <39> d2 72 c0 e9 c8 01 00 00 41 c0 ef 04 41 80 ff 01 74 06 41 80 ff RSP: 002b:00007ffe9c50db60 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffe9c50db60 RCX: 000000000045649a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffe9c50dba0 R08: 0000000000000001 R09: 000000000211c940 R10: 000000000211cc10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 INFO: task syz-executor0:16016 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D20440 16016 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45649a Code: 02 89 d2 4c 8d 1c 52 4d 89 dd 49 c1 e3 03 47 0f b6 74 1a 04 45 89 f7 41 83 e6 0f 41 80 fe 02 74 12 4c 8b 51 30 4c 8b 59 28 4c <39> d2 72 c0 e9 c8 01 00 00 41 c0 ef 04 41 80 ff 01 74 06 41 80 ff RSP: 002b:00007fff69f37a70 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fff69f37a70 RCX: 000000000045649a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007fff69f37ab0 R08: 0000000000000001 R09: 00000000022a4940 R10: 00000000022a4c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor5:16017 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D20440 16017 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45649a Code: 02 89 d2 4c 8d 1c 52 4d 89 dd 49 c1 e3 03 47 0f b6 74 1a 04 45 89 f7 41 83 e6 0f 41 80 fe 02 74 12 4c 8b 51 30 4c 8b 59 28 4c <39> d2 72 c0 e9 c8 01 00 00 41 c0 ef 04 41 80 ff 01 74 06 41 80 ff RSP: 002b:00007ffc734bfa10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffc734bfa10 RCX: 000000000045649a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffc734bfa50 R08: 0000000000000001 R09: 0000000001a24940 R10: 0000000001a24c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 INFO: task udevd:18631 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D24136 18631 3866 0x00000000 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7e01655f46 Code: Bad RIP value. RSP: 002b:00007ffc7991b5b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffc7991b5b0 RCX: 00007f7e01655f46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffc7991b610 R08: 00000000000048c7 R09: 00000000000048c7 R10: 00007f7e01f72a70 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7991b5d0 R14: 0000000000000005 R15: 0000000000000005 INFO: task syz-executor3:22157 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D20440 22157 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45649a Code: 02 89 d2 4c 8d 1c 52 4d 89 dd 49 c1 e3 03 47 0f b6 74 1a 04 45 89 f7 41 83 e6 0f 41 80 fe 02 74 12 4c 8b 51 30 4c 8b 59 28 4c <39> d2 72 c0 e9 c8 01 00 00 41 c0 ef 04 41 80 ff 01 74 06 41 80 ff RSP: 002b:00007ffc9a6e3830 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffc9a6e3830 RCX: 000000000045649a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffc9a6e3870 R08: 0000000000000001 R09: 0000000001ca7940 R10: 0000000001ca7c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003 INFO: task net.agent:31692 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. net.agent D25384 31692 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f3f6ae12f46 Code: Bad RIP value. RSP: 002b:00007ffe64180cc0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffe64180cc0 RCX: 00007f3f6ae12f46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffe64180d00 R08: 0000000000007bcc R09: 0000000000007bcc R10: 00007f3f6b3099d0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000415c42 R15: 0000000000000101 INFO: task net.agent:31704 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. net.agent D25992 31704 1 0x00000000 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline] rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297 call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:83 [inline] __percpu_down_read kernel/locking/percpu-rwsem.c:85 [inline] __percpu_down_read+0x142/0x1d0 kernel/locking/percpu-rwsem.c:41 percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:49 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] uprobe_start_dup_mmap+0xbf/0xe0 kernel/events/uprobes.c:1525 dup_mmap kernel/fork.c:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process+0x3041/0x8710 kernel/fork.c:1917 _do_fork+0x1a9/0x1170 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2328 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f52dc8ebf46 Code: Bad RIP value. RSP: 002b:00007ffd45405f40 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffd45405f40 RCX: 00007f52dc8ebf46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffd45405f80 R08: 0000000000007bd8 R09: 0000000000007bd8 R10: 00007f52dcde29d0 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000415c42 R15: 0000000000000101 INFO: task syz-executor4:31733 blocked for more than 140 seconds. Not tainted 5.0.0-rc2+ #28 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D21464 31733 8034 0x00000004 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3472 schedule+0xfe/0x350 kernel/sched/core.c:3516 percpu_down_write+0x430/0x540 kernel/locking/percpu-rwsem.c:162 register_for_each_vma+0x99/0xef0 kernel/events/uprobes.c:1012 __uprobe_register kernel/events/uprobes.c:1144 [inline] __uprobe_register+0x507/0x8e0 kernel/events/uprobes.c:1112 uprobe_register_refctr+0x2e/0x40 kernel/events/uprobes.c:1166 probe_event_enable+0x849/0xf20 kernel/trace/trace_uprobe.c:921 trace_uprobe_register+0x69b/0xcf0 kernel/trace/trace_uprobe.c:1200 perf_trace_event_reg kernel/trace/trace_event_perf.c:124 [inline] perf_trace_event_init+0x500/0x990 kernel/trace/trace_event_perf.c:199 perf_uprobe_init+0x1db/0x290 kernel/trace/trace_event_perf.c:329 perf_uprobe_event_init+0x106/0x1a0 kernel/events/core.c:8503 perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9770 perf_init_event kernel/events/core.c:9801 [inline] perf_event_alloc.part.0+0x20bf/0x3520 kernel/events/core.c:10074 perf_event_alloc kernel/events/core.c:10430 [inline] __do_sys_perf_event_open+0xbb5/0x2f00 kernel/events/core.c:10531 __se_sys_perf_event_open kernel/events/core.c:10420 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10420 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457ec9 Code: 28 c3 e8 aa 20 00 00 eb a8 cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 76 2e 48 83 ec 18 48 89 6c 24 10 48 <8d> 6c 24 10 48 8b 42 08 48 8b 4a 10 48 89 04 24 48 89 4c 24 08 e8 RSP: 002b:00007f7b5d0f6c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457ec9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f7b5d0f76d4 R13: 00000000004c446d R14: 00000000004d7958 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1039: #0: 00000000758c743d (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 2 locks held by rsyslogd/7898: #0: 00000000ea915339 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 #1: 00000000241f3da6 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1149 [inline] #1: 00000000241f3da6 (&rq->lock){-.-.}, at: __schedule+0x21e/0x1e60 kernel/sched/core.c:3410 2 locks held by getty/7988: #0: 00000000cc4a44b2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b800d5f7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7989: #0: 00000000456453de (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000313ccf43 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7990: #0: 000000006661f4bb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000006e976236 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7991: #0: 00000000351a1c9c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000851a98b5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7992: #0: 00000000c6b57ffb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000006ff5199a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7993: #0: 00000000f745d46c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b9983a11 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/7994: #0: 000000005b0f8900 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000cd45edb4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 1 lock held by syz-executor1/8025: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by syz-executor2/15014: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by syz-executor4/15510: #0: 00000000cb0b413b (event_mutex){+.+.}, at: perf_trace_destroy+0x28/0x100 kernel/trace/trace_event_perf.c:236 1 lock held by syz-executor0/16016: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by syz-executor5/16017: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by udevd/18631: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by syz-executor3/22157: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by syz-executor3/22436: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by net.agent/31692: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 1 lock held by net.agent/31704: #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: copy_process+0x3041/0x8710 kernel/fork.c:1917 5 locks held by syz-executor4/31733: #0: 00000000146c3c3f (&sig->cred_guard_mutex){+.+.}, at: __do_sys_perf_event_open+0x9c3/0x2f00 kernel/events/core.c:10511 #1: 000000002012f2b3 (&pmus_srcu){....}, at: perf_event_alloc.part.0+0x10c1/0x3520 kernel/events/core.c:10070 #2: 00000000cb0b413b (event_mutex){+.+.}, at: perf_uprobe_init+0x1d0/0x290 kernel/trace/trace_event_perf.c:328 #3: 000000000fb232b7 (&uprobe->register_rwsem){+.+.}, at: __uprobe_register kernel/events/uprobes.c:1140 [inline] #3: 000000000fb232b7 (&uprobe->register_rwsem){+.+.}, at: __uprobe_register+0x465/0x8e0 kernel/events/uprobes.c:1112 #4: 00000000e69d6ff0 (&dup_mmap_sem){++++}, at: percpu_down_write+0x9a/0x540 kernel/locking/percpu-rwsem.c:145 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1039 Comm: khungtaskd Not tainted 5.0.0-rc2+ #28 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 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0xbbb/0x1170 kernel/hung_task.c:287 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x2/0x10 arch/x86/include/asm/irqflags.h:57