INFO: task udevd:7560 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D27968 7560 3873 0x00000000 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa0449b8f46 Code: Bad RIP value. RSP: 002b:00007ffdee381030 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffdee381030 RCX: 00007fa0449b8f46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffdee381090 R08: 0000000000001d88 R09: 0000000000001d88 R10: 00007fa0452d5a70 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdee381050 R14: 0000000000000003 R15: 0000000000000003 INFO: task udevd:7561 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D28032 7561 3873 0x00000000 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa0449b8f46 Code: Bad RIP value. RSP: 002b:00007ffdee381030 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffdee381030 RCX: 00007fa0449b8f46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffdee381090 R08: 0000000000001d89 R09: 0000000000001d89 R10: 00007fa0452d5a70 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdee381050 R14: 0000000000000003 R15: 0000000000000003 INFO: task syz-executor0:7592 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D23936 7592 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45640a Code: 83 c4 38 c3 48 8b 74 24 48 e9 43 ff ff ff c7 44 24 50 00 00 00 00 48 8b 6c 24 30 48 83 c4 38 c3 e8 4b 3b 00 00 e9 c6 fe ff ff cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 56 RSP: 002b:00007ffce1ec4d70 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffce1ec4d70 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffce1ec4db0 R08: 0000000000000001 R09: 0000000002872940 R10: 0000000002872c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor1:7595 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D23744 7595 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45640a Code: 83 c4 38 c3 48 8b 74 24 48 e9 43 ff ff ff c7 44 24 50 00 00 00 00 48 8b 6c 24 30 48 83 c4 38 c3 e8 4b 3b 00 00 e9 c6 fe ff ff cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 56 RSP: 002b:00007ffd69bdf9b0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffd69bdf9b0 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffd69bdf9f0 R08: 0000000000000001 R09: 0000000000f7c940 R10: 0000000000f7cc10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 INFO: task syz-executor2:7597 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D24000 7597 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45640a Code: 83 c4 38 c3 48 8b 74 24 48 e9 43 ff ff ff c7 44 24 50 00 00 00 00 48 8b 6c 24 30 48 83 c4 38 c3 e8 4b 3b 00 00 e9 c6 fe ff ff cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 56 RSP: 002b:00007ffe95909d20 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffe95909d20 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffe95909d60 R08: 0000000000000001 R09: 0000000001f4d940 R10: 0000000001f4dc10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 INFO: task syz-executor3:7600 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D24432 7600 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45640a Code: 83 c4 38 c3 48 8b 74 24 48 e9 43 ff ff ff c7 44 24 50 00 00 00 00 48 8b 6c 24 30 48 83 c4 38 c3 e8 4b 3b 00 00 e9 c6 fe ff ff cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 56 RSP: 002b:00007ffea0476c10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffea0476c10 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffea0476c50 R08: 0000000000000001 R09: 0000000001a5a940 R10: 0000000001a5ac10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003 INFO: task syz-executor5:7607 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D24048 7607 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45640a Code: 83 c4 38 c3 48 8b 74 24 48 e9 43 ff ff ff c7 44 24 50 00 00 00 00 48 8b 6c 24 30 48 83 c4 38 c3 e8 4b 3b 00 00 e9 c6 fe ff ff cc cc cc cc cc 64 48 8b 0c 25 f8 ff ff ff 48 3b 61 10 0f 86 56 RSP: 002b:00007ffd67256930 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffd67256930 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffd67256970 R08: 0000000000000001 R09: 00000000024ea940 R10: 00000000024eac10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 INFO: task udevd:7674 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D27904 7674 3873 0x00000000 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa0449b8f46 Code: Bad RIP value. RSP: 002b:00007ffdee381030 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffdee381030 RCX: 00007fa0449b8f46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffdee381090 R08: 0000000000001dfa R09: 0000000000001dfa R10: 00007fa0452d5a70 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdee381050 R14: 0000000000000003 R15: 0000000000000003 INFO: task udevd:7676 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D28032 7676 3873 0x00000000 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa0449b8f46 Code: Bad RIP value. RSP: 002b:00007ffdee37c670 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffdee37c670 RCX: 00007fa0449b8f46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffdee37c6d0 R08: 0000000000001dfc R09: 0000000000001dfc R10: 00007fa0452d5a70 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdee37c690 R14: 0000000000000005 R15: 0000000000000005 INFO: task udevd:8285 blocked for more than 140 seconds. Not tainted 5.0.0-rc5-next-20190207 #30 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. udevd D28048 8285 3873 0x00000000 Call Trace: context_switch kernel/sched/core.c:2847 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3488 schedule+0x92/0x180 kernel/sched/core.c:3532 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:287 [inline] rwsem_down_read_failed+0x213/0x420 kernel/locking/rwsem-xadd.c:304 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+0x8d/0xf0 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:471 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 copy_process kernel/fork.c:1710 [inline] _do_fork+0x257/0xfe0 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa0449b8f46 Code: Bad RIP value. RSP: 002b:00007ffdee37c670 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffdee37c670 RCX: 00007fa0449b8f46 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffdee37c6d0 R08: 000000000000205d R09: 000000000000205d R10: 00007fa0452d5a70 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdee37c690 R14: 0000000000000005 R15: 0000000000000005 Showing all locks held in the system: 1 lock held by khungtaskd/1041: #0: 000000004ab6ba11 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4374 1 lock held by rsyslogd/7461: #0: 00000000052707d7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:796 2 locks held by getty/7551: #0: 0000000092b7357a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000509e5a14 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7552: #0: 00000000779c27be (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009bed329a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7553: #0: 0000000097ddfa1a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005692d47d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7554: #0: 000000008ca603d3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000c8404034 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7555: #0: 00000000b1831b8d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000b7deff36 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7556: #0: 000000007991576a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000096187aa3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 2 locks held by getty/7557: #0: 000000007ce00f70 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000d4918927 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156 1 lock held by udevd/7560: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by udevd/7561: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by syz-executor0/7592: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by syz-executor1/7595: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by syz-executor2/7597: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by syz-executor3/7600: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by syz-executor5/7607: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by udevd/7674: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by udevd/7676: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by udevd/8285: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 1 lock held by syz-executor2/9387: #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:471 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2bc1/0x79e0 kernel/fork.c:1917 5 locks held by syz-executor4/10716: #0: 00000000617a40da (&sig->cred_guard_mutex){+.+.}, at: __do_sys_perf_event_open+0x70c/0x26d0 kernel/events/core.c:10734 #1: 0000000028feef0b (&pmus_srcu){....}, at: perf_event_alloc.part.0+0xd32/0x2d70 kernel/events/core.c:10293 #2: 00000000a47ecff5 (event_mutex){+.+.}, at: perf_uprobe_init+0x1d0/0x290 kernel/trace/trace_event_perf.c:328 #3: 00000000fbaa412f (&uprobe->register_rwsem){+.+.}, at: __uprobe_register kernel/events/uprobes.c:1140 [inline] #3: 00000000fbaa412f (&uprobe->register_rwsem){+.+.}, at: __uprobe_register+0x3d3/0x7d0 kernel/events/uprobes.c:1112 #4: 0000000017bbd7c1 (&dup_mmap_sem){++++}, at: percpu_down_write+0x6a/0x440 kernel/locking/percpu-rwsem.c:145 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1041 Comm: khungtaskd Not tainted 5.0.0-rc5-next-20190207 #30 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+0x172/0x1f0 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:204 [inline] watchdog+0x9df/0xee0 kernel/hung_task.c:288 kthread+0x357/0x430 kernel/kthread.c:247 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 0 to CPUs 1: