audit: type=1804 audit(1549357488.698:789): pid=15776 uid=0 auid=4294967295 ses=4294967295 subj=_ op=invalid_pcr cause=open_writers comm="syz-executor2" name="/root/syzkaller-testdir456451682/syzkaller.4EL8dT/1790/bus" dev="sda1" ino=17623 res=1 INFO: task syz-executor0:7649 blocked for more than 140 seconds. Not tainted 5.0.0-rc5 #60 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D24000 7649 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __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:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2b94/0x79a0 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: Bad RIP value. RSP: 002b:00007ffe5dbcf850 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffe5dbcf850 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffe5dbcf890 R08: 0000000000000001 R09: 00000000027c1940 R10: 00000000027c1c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: task syz-executor1:7652 blocked for more than 140 seconds. Not tainted 5.0.0-rc5 #60 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D24048 7652 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __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:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2b94/0x79a0 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: Bad RIP value. RSP: 002b:00007fff40dc4440 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fff40dc4440 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007fff40dc4480 R08: 0000000000000001 R09: 000000000138f940 R10: 000000000138fc10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 INFO: task syz-executor3:7657 blocked for more than 140 seconds. Not tainted 5.0.0-rc5 #60 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D24448 7657 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __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:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2b94/0x79a0 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: Bad RIP value. RSP: 002b:00007ffde4074b30 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffde4074b30 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffde4074b70 R08: 0000000000000001 R09: 00000000028da940 R10: 00000000028dac10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003 INFO: task syz-executor4:7661 blocked for more than 140 seconds. Not tainted 5.0.0-rc5 #60 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D24448 7661 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __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:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2b94/0x79a0 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: Bad RIP value. RSP: 002b:00007ffdc6649d00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffdc6649d00 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffdc6649d40 R08: 0000000000000001 R09: 00000000025a7940 R10: 00000000025a7c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004 INFO: task syz-executor5:21019 blocked for more than 140 seconds. Not tainted 5.0.0-rc5 #60 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D24000 21019 1 0x00000006 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 __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:472 [inline] dup_mm kernel/fork.c:1320 [inline] copy_mm kernel/fork.c:1375 [inline] copy_process.part.0+0x2b94/0x79a0 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: Bad RIP value. RSP: 002b:00007ffcb33e10d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffcb33e10d0 RCX: 000000000045640a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffcb33e1110 R08: 0000000000000001 R09: 0000000001ea2940 R10: 0000000001ea2c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 INFO: task syz-executor2:15757 blocked for more than 140 seconds. Not tainted 5.0.0-rc5 #60 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D25504 15757 7655 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x817/0x1cc0 kernel/sched/core.c:3485 schedule+0x92/0x180 kernel/sched/core.c:3529 percpu_down_write+0x342/0x440 kernel/locking/percpu-rwsem.c:162 register_for_each_vma+0x8c/0xde0 kernel/events/uprobes.c:1012 __uprobe_register kernel/events/uprobes.c:1144 [inline] __uprobe_register+0x464/0x7d0 kernel/events/uprobes.c:1112 uprobe_register_refctr+0x2e/0x40 kernel/events/uprobes.c:1166 probe_event_enable+0x51d/0xc40 kernel/trace/trace_uprobe.c:921 trace_uprobe_register+0x4ba/0x960 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+0x1d08/0x2e00 kernel/events/core.c:10074 perf_event_alloc kernel/events/core.c:10430 [inline] __do_sys_perf_event_open+0x842/0x2690 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+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457e39 Code: Bad RIP value. RSP: 002b:00007f48a83a2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457e39 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f48a83a36d4 R13: 00000000004c443f R14: 00000000004d7a48 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1039: #0: 0000000036000aac (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4389 2 locks held by rs:main Q:Reg/7520: #0: 0000000067786d8d (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795 #1: 000000004e595f00 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2816 [inline] #1: 000000004e595f00 (sb_writers#3){.+.+}, at: vfs_write+0x429/0x580 fs/read_write.c:548 1 lock held by rsyslogd/7522: #0: 0000000058ff3270 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:795 2 locks held by getty/7612: #0: 00000000d4deb234 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000003b7bbd6a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7613: #0: 00000000cb56b16a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000005e003e07 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7614: #0: 00000000586d35ce (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000002c2853cf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7615: #0: 000000008cf026dc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000006e2b0f48 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7616: #0: 00000000dd6353ed (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000035262a98 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7617: #0: 000000008278ed31 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000f13d51c9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 2 locks held by getty/7618: #0: 000000004a74e1e4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000001121630b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2154 1 lock held by syz-executor0/7649: #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2b94/0x79a0 kernel/fork.c:1917 1 lock held by syz-executor1/7652: #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2b94/0x79a0 kernel/fork.c:1917 1 lock held by syz-executor3/7657: #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2b94/0x79a0 kernel/fork.c:1917 1 lock held by syz-executor4/7661: #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2b94/0x79a0 kernel/fork.c:1917 1 lock held by syz-executor5/21019: #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2b94/0x79a0 kernel/fork.c:1917 1 lock held by syz-executor3/31871: #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:472 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1320 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1375 [inline] #0: 00000000c76312cf (&dup_mmap_sem){++++}, at: copy_process.part.0+0x2b94/0x79a0 kernel/fork.c:1917 5 locks held by syz-executor2/15757: #0: 000000005e5867ed (&sig->cred_guard_mutex){+.+.}, at: __do_sys_perf_event_open+0x6e1/0x2690 kernel/events/core.c:10511 #1: 00000000933ef06c (&pmus_srcu){....}, at: perf_event_alloc.part.0+0xd56/0x2e00 kernel/events/core.c:10070 #2: 000000006822315a (event_mutex){+.+.}, at: perf_uprobe_init+0x1d0/0x290 kernel/trace/trace_event_perf.c:328 #3: 000000006c8d4c63 (&uprobe->register_rwsem){+.+.}, at: __uprobe_register kernel/events/uprobes.c:1140 [inline] #3: 000000006c8d4c63 (&uprobe->register_rwsem){+.+.}, at: __uprobe_register+0x3d3/0x7d0 kernel/events/uprobes.c:1112 #4: 00000000c76312cf (&dup_mmap_sem){++++}, at: percpu_down_write+0x6a/0x440 kernel/locking/percpu-rwsem.c:145 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1039 Comm: khungtaskd Not tainted 5.0.0-rc5 #60 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:203 [inline] watchdog+0x9df/0xee0 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3866 Comm: udevd Not tainted 5.0.0-rc5 #60 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_disable arch/x86/include/asm/paravirt.h:771 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:784 [inline] RIP: 0010:lock_acquire+0xae/0x3f0 kernel/locking/lockdep.c:3836 Code: 00 0f 85 f9 02 00 00 48 83 3d 45 32 3b 07 00 0f 84 82 02 00 00 9c 58 0f 1f 44 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 45 c8 <48> c7 c0 f8 81 92 88 48 c1 e8 03 80 3c 10 00 0f 85 f5 02 00 00 48 RSP: 0018:ffff888097f3fb48 EFLAGS: 00000082 RAX: 0000000000000082 RBX: ffff888097f36280 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff888097f36afc RBP: ffff888097f3fb90 R08: 0000000000000001 R09: 0000000000000000 R10: ffffed101306a880 R11: 0000000000000001 R12: ffffffff889b26c8 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 00007fc6a056e7a0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000097eaf000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000041 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: seqcount_lockdep_reader_access include/linux/seqlock.h:81 [inline] read_seqcount_begin include/linux/seqlock.h:164 [inline] ktime_get_ts64+0xe2/0x3f0 kernel/time/timekeeping.c:883 select_estimate_accuracy+0xd4/0x330 fs/select.c:87 ep_poll+0x3b3/0xe50 fs/eventpoll.c:1761 do_epoll_wait+0x1b3/0x200 fs/eventpoll.c:2216 __do_sys_epoll_wait fs/eventpoll.c:2226 [inline] __se_sys_epoll_wait fs/eventpoll.c:2223 [inline] __x64_sys_epoll_wait+0x97/0xf0 fs/eventpoll.c:2223 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc69fc82943 Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 RSP: 002b:00007ffd42cb8dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000bb8 RCX: 00007fc69fc82943 RDX: 0000000000000008 RSI: 00007ffd42cb8ed0 RDI: 000000000000000a RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000bb8 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000001fd0650 R15: 0000000001fce250