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INFO: rcu detected stall in unix_dgram_recvmsg (3)

Status: auto-obsoleted due to no activity on 2024/09/18 01:51
Subsystems: net
[Documentation on labels]
First crash: 722d, last: 721d
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in unix_dgram_recvmsg (5) net 1 1 175d 175d 0/29 auto-obsoleted due to no activity on 2026/03/18 06:54
upstream INFO: rcu detected stall in unix_dgram_recvmsg (4) net 1 syz 9 590d 618d 0/29 auto-obsoleted due to no activity on 2025/02/06 16:30
upstream INFO: rcu detected stall in unix_dgram_recvmsg (2) net 1 1 939d 939d 0/29 auto-obsoleted due to no activity on 2024/02/13 00:28
upstream INFO: rcu detected stall in unix_dgram_recvmsg net 1 2 2741d 2792d 0/29 auto-closed as invalid on 2019/06/07 16:10

Sample crash report:
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-...D
 } 2685 jiffies s: 32757 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
NMI backtrace for cpu 0
CPU: 0 PID: 30933 Comm: syz-executor.2 Not tainted 6.10.0-rc4-syzkaller-00025-gb0fc24f36191 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:413
Code: 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1c 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 cc cc cc cc e8 d1 90 0b ff eb a0 e8 5a 91 0b
RSP: 0000:ffffc90005f670b8 EFLAGS: 00000002
RAX: 0000000000000020 RBX: 00000000000003f8 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: ffffffff829a0e85 RDI: ffffffff8d719be0
RBP: ffffffff8d719ba0 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000007 R12: 0000000000000000
R13: 0000000000000020 R14: ffffffff829a0e20 R15: 0000000000000000
FS:  0000555568101480(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f94b000 CR3: 0000000130fea000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 serial_out drivers/tty/serial/8250/8250.h:122 [inline]
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3322 [inline]
 serial8250_console_write+0xce7/0x1090 drivers/tty/serial/8250/8250_port.c:3393
 console_emit_next_record kernel/printk/printk.c:2928 [inline]
 console_flush_all+0x53c/0xd70 kernel/printk/printk.c:2994
 console_unlock+0xae/0x290 kernel/printk/printk.c:3063
 vprintk_emit kernel/printk/printk.c:2345 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2300
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2370
 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
 show_trace_log_lvl+0x2ac/0x500 arch/x86/kernel/dumpstack.c:285
 sched_show_task kernel/sched/core.c:9191 [inline]
 sched_show_task+0x42e/0x650 kernel/sched/core.c:9165
 show_state_filter+0xee/0x320 kernel/sched/core.c:9236
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline]
 kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1543
 input_to_handler+0x38f/0x4d0 drivers/input/input.c:132
 input_pass_values+0x5c9/0x840 drivers/input/input.c:161
 input_event_dispose+0x37a/0x630 drivers/input/input.c:378
 input_handle_event+0x11c/0xd80 drivers/input/input.c:406
 input_event drivers/input/input.c:435 [inline]
 input_event+0x83/0xa0 drivers/input/input.c:427
 input_sync include/linux/input.h:450 [inline]
 hidinput_report_event+0xb2/0x100 drivers/hid/hid-input.c:1763
 hid_report_raw_event+0x274/0x11c0 drivers/hid/hid-core.c:2022
 hid_input_report+0x345/0x440 drivers/hid/hid-core.c:2089
 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:284
 __usb_hcd_giveback_urb+0x466/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17f6/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7fdbd4cc2aed
Code: 08 48 83 c3 08 48 39 d1 72 f3 48 83 e8 08 48 39 f2 73 17 66 2e 0f 1f 84 00 00 00 00 00 48 8b 70 f8 48 83 e8 08 48 39 f2 72 f3 <48> 39 c3 73 3e 48 89 33 48 83 c3 08 48 8b 70 f8 48 89 08 48 8b 0b
RSP: 002b:00007ffd1f76c4a0 EFLAGS: 00000246
RAX: 00007fdbd413ed00 RBX: 00007fdbd413e6f0 RCX: ffffffff811660ca
RDX: ffffffff81155f9d RSI: ffffffff81155f9d RDI: 00007fdbd4142b20
RBP: 00007fdbd413d658 R08: 00007fdbd41400b8 R09: 00000000842a93cc
R10: 00007ffd1f76c730 R11: 00000000842a93cc R12: 00007fdbd413d650
R13: 0000000000000018 R14: 000000000016b738 R15: 00007fdbd4e3df40
 </TASK>
 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
 __skb_wait_for_more_packets+0x36c/0x5e0 net/core/datagram.c:121
 __unix_dgram_recvmsg+0x243/0xdd0 net/unix/af_unix.c:2401
 unix_dgram_recvmsg+0xd0/0x110 net/unix/af_unix.c:2490
 sock_recvmsg_nosec net/socket.c:1046 [inline]
 sock_recvmsg+0x1f6/0x250 net/socket.c:1068
 sock_read_iter+0x2c7/0x3c0 net/socket.c:1138
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0xa39/0xbd0 fs/read_write.c:476
 ksys_read+0x1f8/0x260 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd8d46b2b6a
RSP: 002b:00007ffc30c2f318 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd8d46b2b6a
RDX: 00000000000000ff RSI: 00005601c0daa950 RDI: 0000000000000000
RBP: 00005601c0daa910 R08: 0000000000000001 R09: 0000000000000000
R10: 00007fd8d48513a3 R11: 0000000000000246 R12: 00005601c0daa98a
R13: 00005601c0daa950 R14: 0000000000000000 R15: 00007fd8d4895a80
 </TASK>
task:acpid           state:S stack:23504 pid:2383  tgid:2383  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x3c7/0x430 kernel/time/hrtimer.c:2273
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_select+0x12f2/0x17b0 fs/select.c:607
 core_sys_select+0x459/0xb80 fs/select.c:681
 do_pselect.constprop.0+0x1a0/0x1f0 fs/select.c:763
 __do_sys_pselect6 fs/select.c:804 [inline]
 __se_sys_pselect6 fs/select.c:795 [inline]
 __x64_sys_pselect6+0x150/0x1d0 fs/select.c:795
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb9d79f6591
RSP: 002b:00007fff2b07dda0 EFLAGS: 00000246 ORIG_RAX: 000000000000010e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb9d79f6591
RDX: 0000000000000000 RSI: 00007fff2b07de98 RDI: 000000000000000a
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000056103fe42178 R14: 0000000000000000 R15: 0000000000000009
 </TASK>
task:klogd           state:S stack:25056 pid:2387  tgid:2387  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 syslog_print+0x214/0x5d0 kernel/printk/printk.c:1579
 do_syslog+0x3be/0x6a0 kernel/printk/printk.c:1731
 __do_sys_syslog kernel/printk/printk.c:1823 [inline]
 __se_sys_syslog kernel/printk/printk.c:1821 [inline]
 __x64_sys_syslog+0x74/0xb0 kernel/printk/printk.c:1821
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcdb1f29fa7
RSP: 002b:00007fff746207c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007fcdb20c84a0 RCX: 00007fcdb1f29fa7
RDX: 00000000000003ff RSI: 00007fcdb20c84a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000007 R09: 85de24dacad456c6
R10: 0000000000004000 R11: 0000000000000206 R12: 00007fcdb20c84a0
R13: 00007fcdb20b8212 R14: 00007fcdb20c8681 R15: 00007fcdb20c8681
 </TASK>
task:udevd           state:S stack:24400 pid:2398  tgid:2398  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x20f/0x430 kernel/time/hrtimer.c:2289
 ep_poll fs/eventpoll.c:2062 [inline]
 do_epoll_wait+0x13d4/0x1ae0 fs/eventpoll.c:2464
 __do_sys_epoll_wait fs/eventpoll.c:2476 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2471 [inline]
 __x64_sys_epoll_wait+0x194/0x290 fs/eventpoll.c:2471
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f16a55a9457
RSP: 002b:00007fff72e01c08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00007fff72e01d08 RCX: 00007f16a55a9457
RDX: 0000000000000008 RSI: 00007fff72e01d08 RDI: 000000000000000b
RBP: 000000000000000b R08: 0000000000000007 R09: 251fe3e584c03529
R10: 0000000000000bb8 R11: 0000000000000246 R12: 0000000000000bb8
R13: 0000000200000001 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
task:dbus-daemon     state:S stack:28640 pid:2420  tgid:2420  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x3c7/0x430 kernel/time/hrtimer.c:2273
 ep_poll fs/eventpoll.c:2062 [inline]
 do_epoll_wait+0x13d4/0x1ae0 fs/eventpoll.c:2464
 __do_sys_epoll_wait fs/eventpoll.c:2476 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2471 [inline]
 __x64_sys_epoll_wait+0x194/0x290 fs/eventpoll.c:2471
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa299715457
RSP: 002b:00007ffc38fb4788 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00007ffc38fb4798 RCX: 00007fa299715457
RDX: 0000000000000040 RSI: 00007ffc38fb4798 RDI: 0000000000000003
RBP: 00007ffc38fb4b28 R08: 0000000000000fea R09: 00007fa29988a080
R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ffc38fb4b28 R15: 00007ffc38fb4e38
 </TASK>
task:dhcpcd          state:S stack:26368 pid:2435  tgid:2435  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x20f/0x430 kernel/time/hrtimer.c:2289
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_poll fs/select.c:965 [inline]
 do_sys_poll+0xae2/0xde0 fs/select.c:1016
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1102 [inline]
 __x64_sys_ppoll+0x25a/0x2d0 fs/select.c:1102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc01f53ad5
RSP: 002b:00007ffe21404760 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 000055fd2470de20 RCX: 00007fcc01f53ad5
RDX: 00007ffe21404780 RSI: 0000000000000004 RDI: 000055fd24717db0
RBP: 00007ffe21404ab0 R08: 0000000000000008 R09: 00007fcc0203c080
R10: 00007ffe21404ab0 R11: 0000000000000246 R12: 00007ffe214047a8
R13: 000055fd14213610 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
task:dhcpcd          state:S stack:23024 pid:2436  tgid:2436  ppid:2435   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x3c7/0x430 kernel/time/hrtimer.c:2273
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_poll fs/select.c:965 [inline]
 do_sys_poll+0xae2/0xde0 fs/select.c:1016
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1102 [inline]
 __x64_sys_ppoll+0x25a/0x2d0 fs/select.c:1102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc01f53ad5
RSP: 002b:00007ffe21404760 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 000055fd2470de20 RCX: 00007fcc01f53ad5
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 000055fd2470de00
RBP: 00007ffe21404ab0 R08: 0000000000000008 R09: 00007ffe213f4618
R10: 00007ffe21404ab0 R11: 0000000000000246 R12: 0000000000000000
R13: 000055fd14213610 R14: 00000000ffffffff R15: 0000000000000000
 </TASK>
task:dhcpcd          state:S stack:27552 pid:2437  tgid:2437  ppid:2435   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x3c7/0x430 kernel/time/hrtimer.c:2273
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_poll fs/select.c:965 [inline]
 do_sys_poll+0xae2/0xde0 fs/select.c:1016
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1102 [inline]
 __x64_sys_ppoll+0x25a/0x2d0 fs/select.c:1102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc01f53ad5
RSP: 002b:00007ffe21404760 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 000055fd2470de20 RCX: 00007fcc01f53ad5
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 000055fd24716f20
RBP: 00007ffe21404ab0 R08: 0000000000000008 R09: 000055fd142133d0
R10: 00007ffe21404ab0 R11: 0000000000000246 R12: 0000000000000000
R13: 000055fd14213610 R14: 0000000000000003 R15: 0000000000000000
 </TASK>
task:dhcpcd          state:S stack:27552 pid:2438  tgid:2438  ppid:2435   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x3c7/0x430 kernel/time/hrtimer.c:2273
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_poll fs/select.c:965 [inline]
 do_sys_poll+0xae2/0xde0 fs/select.c:1016
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1102 [inline]
 __x64_sys_ppoll+0x25a/0x2d0 fs/select.c:1102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc01f53ad5
RSP: 002b:00007ffe21404760 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 000055fd2470de20 RCX: 00007fcc01f53ad5
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 000055fd24716f20
RBP: 00007ffe21404ab0 R08: 0000000000000008 R09: 000055fd142133d0
R10: 00007ffe21404ab0 R11: 0000000000000246 R12: 0000000000000000
R13: 000055fd14213610 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
task:dhcpcd          state:S stack:27296 pid:2454  tgid:2454  ppid:2436   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x3c7/0x430 kernel/time/hrtimer.c:2273
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_poll fs/select.c:965 [inline]
 do_sys_poll+0xae2/0xde0 fs/select.c:1016
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1102 [inline]
 __x64_sys_ppoll+0x25a/0x2d0 fs/select.c:1102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc01f53ad5
RSP: 002b:00007ffe21404760 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 000055fd2470de20 RCX: 00007fcc01f53ad5
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000055fd24718c90
RBP: 00007ffe21404ab0 R08: 0000000000000008 R09: 0000000000000000
R10: 00007ffe21404ab0 R11: 0000000000000246 R12: 0000000000000000
R13: 000055fd14213610 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
task:sshd            state:S stack:27312 pid:2456  tgid:2456  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x3c7/0x430 kernel/time/hrtimer.c:2273
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_poll fs/select.c:965 [inline]
 do_sys_poll+0xae2/0xde0 fs/select.c:1016
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1102 [inline]
 __x64_sys_ppoll+0x25a/0x2d0 fs/select.c:1102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbbc55b2ad5
RSP: 002b:00007ffc3968fbf0 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 000055a855b064d0 RCX: 00007fbbc55b2ad5
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000055a855b069b0
RBP: 0000000000000064 R08: 0000000000000008 R09: 0000000000000000
R10: 00007ffc3968fda8 R11: 0000000000000246 R12: 000055a855b069b0
R13: 00007ffc3968fda8 R14: 0000000000000002 R15: 000055a855b0699c
 </TASK>
task:getty           state:S stack:23640 pid:2458  tgid:2458  ppid:1      flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557
 wait_woken+0x175/0x1c0 kernel/sched/wait.c:423
 n_tty_read+0x1109/0x1490 drivers/tty/n_tty.c:2277
 iterate_tty_read drivers/tty/tty_io.c:862 [inline]
 tty_read+0x31a/0x5c0 drivers/tty/tty_io.c:937
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x869/0xbd0 fs/read_write.c:476
 ksys_read+0x12f/0x260 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f701c1bcb6a
RSP: 002b:00007ffc740c7ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000055cf79c7a910 RCX: 00007f701c1bcb6a
RDX: 0000000000000001 RSI: 00007ffc740c7ee0 RDI: 0000000000000000
RBP: 000055cf79c7a970 R08: 0000000000000000 R09: f257f5e6131e6d49
R10: 0000000000000010 R11: 0000000000000246 R12: 000055cf79c7a9ac
R13: 00007ffc740c7ee0 R14: 0000000000000000 R15: 000055cf79c7a9ac
 </TASK>
task:sshd            state:S stack:26560 pid:2492  tgid:2492  ppid:2456   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x20f/0x430 kernel/time/hrtimer.c:2289
 poll_schedule_timeout.constprop.0+0xba/0x190 fs/select.c:244
 do_poll fs/select.c:965 [inline]
 do_sys_poll+0xae2/0xde0 fs/select.c:1016
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1102 [inline]
 __x64_sys_ppoll+0x25a/0x2d0 fs/select.c:1102
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d9f582ad5
RSP: 002b:00007ffcf4652690 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 00000000000668a0 RCX: 00007f2d9f582ad5
RDX: 00007ffcf46526b0 RSI: 0000000000000004 RDI: 000056246e069ab0
RBP: 000056246e068570 R08: 0000000000000008 R09: 0000000000000000
R10: 00007ffcf4652798 R11: 0000000000000246 R12: 00005624510d1aa4
R13: 0000000000000001 R14: 00005624510d23e8 R15: 00007ffcf4652718
 </TASK>
task:syz-fuzzer      state:S stack:26144 pid:2494  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:00007fff9d894a18 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000025c2048
RBP: 00007fff9d894a60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000444fa0
R13: 000000c000f907a4 R14: 00000000025bfc20 R15: 0000000000000021
 </TASK>
task:syz-fuzzer      state:S stack:24096 pid:2495  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c00006be80 EFLAGS: 00000202 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000025c2800
RBP: 000000c00006bec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c00006beb8 R11: 0000000000000202 R12: 000000c00006beb8
R13: 000000c000713c00 R14: 000000c0000064e0 R15: 000000000000000a
 </TASK>
task:syz-fuzzer      state:S stack:24768 pid:2496  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_hrtimeout_range_clock+0x20f/0x430 kernel/time/hrtimer.c:2289
 ep_poll fs/eventpoll.c:2062 [inline]
 do_epoll_wait+0x13d4/0x1ae0 fs/eventpoll.c:2464
 do_compat_epoll_pwait.part.0+0x26/0x1d0 fs/eventpoll.c:2498
 do_epoll_pwait fs/eventpoll.c:2505 [inline]
 __do_sys_epoll_pwait fs/eventpoll.c:2511 [inline]
 __se_sys_epoll_pwait fs/eventpoll.c:2505 [inline]
 __x64_sys_epoll_pwait+0x20c/0x330 fs/eventpoll.c:2505
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x40720e
RSP: 002b:000000c000067748 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000040720e
RDX: 0000000000000080 RSI: 000000c000067818 RDI: 0000000000000004
RBP: 000000c000067790 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000003e7 R11: 0000000000000246 R12: 000000c000067820
R13: 0000000000000010 R14: 000000c000006820 R15: 000000c00114f040
 </TASK>
task:syz-fuzzer      state:S stack:28016 pid:2497  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c000f90ed0 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000002601180
RBP: 000000c000f90f18 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 000000000046f7e0
R13: 000000c000f94400 R14: 000000c00114d040 R15: 000000000000000f
 </TASK>
task:syz-fuzzer      state:S stack:24896 pid:2498  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_waitid+0x116/0x180 kernel/exit.c:1710
 __do_sys_waitid+0x212/0x250 kernel/exit.c:1723
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x40720e
RSP: 002b:000000c0007dbd08 EFLAGS: 00000202 ORIG_RAX: 00000000000000f7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000040720e
RDX: 000000c0007dbe18 RSI: 0000000000007919 RDI: 0000000000000001
RBP: 000000c0007dbd48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000004 R11: 0000000000000202 R12: 000000c0007dbe60
R13: 000000c00087d91c R14: 000000c000fe1860 R15: 0000000000000000
 </TASK>
task:syz-fuzzer      state:S stack:30176 pid:2499  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c000fa5ef0 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000002600ff8
RBP: 000000c000fa5f38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 000000000046f7e0
R13: 000000c000f94000 R14: 000000c00114cea0 R15: 0000000000000009
 </TASK>
task:syz-fuzzer      state:S stack:24960 pid:2500  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c000fa1d70 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c000f94548
RBP: 000000c000fa1db8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 000000c000fa1dc8
R13: 000000c000052f8c R14: 000000c00114d860 R15: 0000000000000000
 </TASK>
task:syz-fuzzer      state:S stack:24832 pid:2505  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_waitid+0x116/0x180 kernel/exit.c:1710
 __do_sys_waitid+0x212/0x250 kernel/exit.c:1723
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x40720e
RSP: 002b:000000c000f8ed08 EFLAGS: 00000202 ORIG_RAX: 00000000000000f7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000040720e
RDX: 000000c000f8ee18 RSI: 000000000000502d RDI: 0000000000000001
RBP: 000000c000f8ed48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000004 R11: 0000000000000202 R12: 000000c000f8ee60
R13: 000000c000713400 R14: 000000c00074cd00 R15: 0000000000000003
 </TASK>
task:syz-fuzzer      state:S stack:24400 pid:2509  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c0007c5d70 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c000713948
RBP: 000000c0007c5db8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 000000c000042000
R13: ffffffffffffffff R14: 000000c00074c9c0 R15: 0000000000000000
 </TASK>
task:syz-fuzzer      state:S stack:23632 pid:2510  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_waitid+0x116/0x180 kernel/exit.c:1710
 __do_sys_waitid+0x212/0x250 kernel/exit.c:1723
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x40720e
RSP: 002b:000000c000057508 EFLAGS: 00000202 ORIG_RAX: 00000000000000f7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000040720e
RDX: 000000c000057618 RSI: 000000000000790e RDI: 0000000000000001
RBP: 000000c000057548 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000004 R11: 0000000000000202 R12: 000000c000057660
R13: 000000c00087f91c R14: 000000c000007a00 R15: 0000000000000000
 </TASK>
task:syz-fuzzer      state:S stack:24608 pid:2511  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c000fe5d70 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c000713d48
RBP: 000000c000fe5db8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 00000000000000a5
R13: 000000c0007dd78c R14: 000000c00074d040 R15: 0000000000000000
 </TASK>
task:syz-fuzzer      state:S stack:24400 pid:4767  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c000961d78 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c000f94d48
RBP: 000000c000961dc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 000000c000042000
R13: 1ef033efeffffff1 R14: 000000c000fe0340 R15: 00000000000000bc
 </TASK>
task:syz-fuzzer      state:S stack:24704 pid:6056  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_waitid+0x116/0x180 kernel/exit.c:1710
 __do_sys_waitid+0x212/0x250 kernel/exit.c:1723
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x40720e
RSP: 002b:000000c0007ded08 EFLAGS: 00000202 ORIG_RAX: 00000000000000f7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000040720e
RDX: 000000c0007dee18 RSI: 00000000000078f0 RDI: 0000000000000001
RBP: 000000c0007ded48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000004 R11: 0000000000000202 R12: 000000c0007dee60
R13: 000000c00088391c R14: 000000c00074d6c0 R15: 0000000000000000
 </TASK>
task:syz-fuzzer      state:S stack:23632 pid:7154  tgid:2494  ppid:2492   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370
 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669
 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697
 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex kernel/futex/syscalls.c:160 [inline]
 __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x473523
RSP: 002b:000000c001613d70 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000c00005bd48
RBP: 000000c001613db8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 000000c001613dc8
R13: 000000c0007dd78c R14: 000000c000fe1040 R15: 0000000000000000
 </TASK>
task:kworker/1:3     state:I stack:22112 pid:4787  tgid:4787  ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:4     state:R  running task     stack:22288 pid:4803  tgid:4803  ppid:2      flags:0x00004000
Workqueue: events console_callback
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6924
 __cond_resched+0x1b/0x30 kernel/sched/core.c:8589
 _cond_resched include/linux/sched.h:1992 [inline]
 process_one_work+0xbfb/0x1b60 kernel/workqueue.c:3264
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:4     state:I stack:20896 pid:4806  tgid:4806  ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:5     state:I stack:18032 pid:4819  tgid:4819  ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:5     state:I stack:21568 pid:4875  tgid:4875  ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:7     state:I stack:21872 pid:6749  tgid:6749  ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:2     state:I stack:21888 pid:10269 tgid:10269 ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/u8:3    state:S stack:26848 pid:13220 tgid:13220 ppid:2      flags:0x00004000
Workqueue: events_unbound call_usermodehelper_exec_work
Call Trace:
 <TASK>
 </TASK>
task:kworker/1:0     state:I stack:22192 pid:15890 tgid:15890 ppid:2      flags:0x00004000
Workqueue:  0x0 (pm)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:2H    state:I stack:29008 pid:16755 tgid:16755 ppid:2      flags:0x00004000
Workqueue:  0x0 (kblockd)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:2     state:I stack:22400 pid:19376 tgid:19376 ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:syz-executor.1  state:S stack:24448 pid:20533 tgid:20533 ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_wait4+0x16c/0x280 kernel/exit.c:1786
 zap_pid_ns_processes+0x2d3/0x690 kernel/pid_namespace.c:221
 find_child_reaper kernel/exit.c:606 [inline]
 forget_original_parent kernel/exit.c:695 [inline]
 exit_notify kernel/exit.c:732 [inline]
 do_exit+0x23cb/0x2b20 kernel/exit.c:894
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
 get_signal+0x2618/0x2710 kernel/signal.c:2909
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x141/0x250 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66d08bc913
RSP: 002b:00007fffd3610098 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 00000000000003f2 RCX: 00007f66d08bc913
RDX: 0000000040000000 RSI: 00007fffd36100ec RDI: 00000000ffffffff
RBP: 00007fffd36100ec R08: 0000000000079caa R09: 00007f66d09cd080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000002993ac R15: 0000000000000002
 </TASK>
task:kworker/u8:4    state:I stack:25840 pid:20624 tgid:20624 ppid:2      flags:0x00004000
Workqueue:  0x0 (events_unbound)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:syz-executor.2  state:S stack:24368 pid:23104 tgid:23104 ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_wait4+0x16c/0x280 kernel/exit.c:1786
 zap_pid_ns_processes+0x2d3/0x690 kernel/pid_namespace.c:221
 find_child_reaper kernel/exit.c:606 [inline]
 forget_original_parent kernel/exit.c:695 [inline]
 exit_notify kernel/exit.c:732 [inline]
 do_exit+0x23cb/0x2b20 kernel/exit.c:894
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
 get_signal+0x2618/0x2710 kernel/signal.c:2909
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x141/0x250 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdbd4d03913
RSP: 002b:00007ffd1f76c828 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 000000000000031f RCX: 00007fdbd4d03913
RDX: 0000000040000000 RSI: 00007ffd1f76c87c RDI: 00000000ffffffff
RBP: 00007ffd1f76c87c R08: 0000000000079b06 R09: 00007fdbd4e14080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000296aa3 R15: 000000000000000f
 </TASK>
task:syz-executor.4  state:D stack:24960 pid:23137 tgid:23137 ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 exp_funnel_lock+0x344/0x3b0 kernel/rcu/tree_exp.h:314
 synchronize_rcu_expedited+0x290/0x450 kernel/rcu/tree_exp.h:939
 namespace_unlock+0x1b5/0x490 fs/namespace.c:1573
 drop_collected_mounts fs/namespace.c:2078 [inline]
 put_mnt_ns fs/namespace.c:5201 [inline]
 put_mnt_ns+0x10a/0x150 fs/namespace.c:5197
 free_nsproxy+0x47/0x4d0 kernel/nsproxy.c:193
 put_nsproxy include/linux/nsproxy.h:107 [inline]
 switch_task_namespaces+0xe0/0x110 kernel/nsproxy.c:251
 do_exit+0xa96/0x2b20 kernel/exit.c:873
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
 get_signal+0x2618/0x2710 kernel/signal.c:2909
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x141/0x250 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74bdcd4913
RSP: 002b:00007ffeb43cf578 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000000000000329 RCX: 00007f74bdcd4913
RDX: 0000000040000000 RSI: 00007ffeb43cf5cc RDI: 00000000ffffffff
RBP: 00007ffeb43cf5cc R08: 0000000000079b80 R09: 00007f74bdde5080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000002975b5 R15: 000000000000000c
 </TASK>
task:syz-executor.3  state:S stack:25424 pid:25060 tgid:25060 ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_wait4+0x16c/0x280 kernel/exit.c:1786
 zap_pid_ns_processes+0x2d3/0x690 kernel/pid_namespace.c:221
 find_child_reaper kernel/exit.c:606 [inline]
 forget_original_parent kernel/exit.c:695 [inline]
 exit_notify kernel/exit.c:732 [inline]
 do_exit+0x23cb/0x2b20 kernel/exit.c:894
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
 get_signal+0x2618/0x2710 kernel/signal.c:2909
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x141/0x250 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1cab0a7913
RSP: 002b:00007ffd411a5b68 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 00000000000002c1 RCX: 00007f1cab0a7913
RDX: 0000000040000000 RSI: 00007ffd411a5bbc RDI: 00000000ffffffff
RBP: 00007ffd411a5bbc R08: 0000000000079b88 R09: 00007f1cab1b8080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000029772c R15: 000000000000000c
 </TASK>
task:syz-executor.0  state:S stack:24240 pid:25071 tgid:25071 ppid:1      flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 do_wait+0x1dd/0x570 kernel/exit.c:1632
 kernel_wait4+0x16c/0x280 kernel/exit.c:1786
 zap_pid_ns_processes+0x2d3/0x690 kernel/pid_namespace.c:221
 find_child_reaper kernel/exit.c:606 [inline]
 forget_original_parent kernel/exit.c:695 [inline]
 exit_notify kernel/exit.c:732 [inline]
 do_exit+0x23cb/0x2b20 kernel/exit.c:894
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
 get_signal+0x2618/0x2710 kernel/signal.c:2909
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x141/0x250 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdfab81b913
RSP: 002b:00007ffdc01999a8 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 000000000000029f RCX: 00007fdfab81b913
RDX: 0000000040000000 RSI: 00007ffdc01999fc RDI: 00000000ffffffff
RBP: 00007ffdc01999fc R08: 0000000000079b62 R09: 00007fdfab92c080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000297389 R15: 000000000000000e
 </TASK>
task:kworker/0:3     state:I stack:29696 pid:27099 tgid:27099 ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:6     state:I stack:22768 pid:28042 tgid:28042 ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/1:7     state:I stack:29728 pid:29046 tgid:29046 ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:1     state:I stack:28368 pid:29563 tgid:29563 ppid:2      flags:0x00004000
Workqueue:  0x0 (events)
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:kworker/0:6     state:I stack:30928 pid:30625 tgid:30625 ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
task:syz-executor.2  state:R  running task     stack:26536 pid:30933 tgid:30933 ppid:23104  flags:0x0000000c
Call Trace:
 <TASK>
 sched_show_task kernel/sched/core.c:9191 [inline]
 sched_show_task+0x42e/0x650 kernel/sched/core.c:9165
 show_state_filter+0xee/0x320 kernel/sched/core.c:9236
 k_spec drivers/tty/vt/keyboard.c:667 [inline]
 k_spec+0xed/0x150 drivers/tty/vt/keyboard.c:656
 kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline]
 kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1543
 input_to_handler+0x38f/0x4d0 drivers/input/input.c:132
 input_pass_values+0x5c9/0x840 drivers/input/input.c:161
 input_event_dispose+0x37a/0x630 drivers/input/input.c:378
 input_handle_event+0x11c/0xd80 drivers/input/input.c:406
 input_event drivers/input/input.c:435 [inline]
 input_event+0x83/0xa0 drivers/input/input.c:427
 input_sync include/linux/input.h:450 [inline]
 hidinput_report_event+0xb2/0x100 drivers/hid/hid-input.c:1763
 hid_report_raw_event+0x274/0x11c0 drivers/hid/hid-core.c:2022
 hid_input_report+0x345/0x440 drivers/hid/hid-core.c:2089
 hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:284
 __usb_hcd_giveback_urb+0x466/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17f6/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0033:0x7fdbd4cc2aed
Code: 08 48 83 c3 08 48 39 d1 72 f3 48 83 e8 08 48 39 f2 73 17 66 2e 0f 1f 84 00 00 00 00 00 48 8b 70 f8 48 83 e8 08 48 39 f2 72 f3 <48> 39 c3 73 3e 48 89 33 48 83 c3 08 48 8b 70 f8 48 89 08 48 8b 0b
RSP: 002b:00007ffd1f76c4a0 EFLAGS: 00000246
RAX: 00007fdbd413ed00 RBX: 00007fdbd413e6f0 RCX: ffffffff811660ca
RDX: ffffffff81155f9d RSI: ffffffff81155f9d RDI: 00007fdbd4142b20
RBP: 00007fdbd413d658 R08: 00007fdbd41400b8 R09: 00000000842a93cc
R10: 00007ffd1f76c730 R11: 00000000842a93cc R12: 00007fdbd413d650
R13: 0000000000000018 R14: 000000000016b738 R15: 00007fdbd4e3df40
 </TASK>
task:syz-executor.0  state:D stack:28656 pid:30943 tgid:30941 ppid:25071  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
 synchronize_rcu_expedited+0x290/0x450 kernel/rcu/tree_exp.h:939
 evdev_detach_client drivers/input/evdev.c:386 [inline]
 evdev_release+0x245/0x400 drivers/input/evdev.c:449
 __fput+0x408/0xbb0 fs/file_table.c:422
 __fput_sync+0x47/0x50 fs/file_table.c:507
 __do_sys_close fs/open.c:1555 [inline]
 __se_sys_close fs/open.c:1540 [inline]
 __x64_sys_close+0x86/0x100 fs/open.c:1540
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdfab81de1a
RSP: 002b:00007fdfaab78080 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007fdfab956050 RCX: 00007fdfab81de1a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 00007fdfab88e074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000009 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000006e R14: 00007fdfab956050 R15: 00007ffdc01996e8
 </TASK>
task:syz-executor.4  state:D stack:27184 pid:30944 tgid:30944 ppid:23137  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 exp_funnel_lock+0x344/0x3b0 kernel/rcu/tree_exp.h:314
 synchronize_rcu_expedited+0x290/0x450 kernel/rcu/tree_exp.h:939
 evdev_detach_client drivers/input/evdev.c:386 [inline]
 evdev_release+0x245/0x400 drivers/input/evdev.c:449
 __fput+0x408/0xbb0 fs/file_table.c:422
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa9b/0x2b20 kernel/exit.c:874
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
 get_signal+0x2618/0x2710 kernel/signal.c:2909
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x141/0x250 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74bdd03335
RSP: 002b:00007ffeb43cf330 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00007f74bde0ef80 RCX: 00007f74bdd03335
RDX: 00007ffeb43cf370 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f74bde10980 R08: 0000000000000000 R09: 00007f74bdde5080
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000298a1c
R13: 00007f74bde0f1fc R14: 0000000000000bea R15: 00007f74bde10980
 </TASK>
task:syz-executor.3  state:D stack:29232 pid:30947 tgid:30946 ppid:25060  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0xca6/0x3170 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 synchronize_rcu_expedited+0x392/0x450 kernel/rcu/tree_exp.h:954
 evdev_detach_client drivers/input/evdev.c:386 [inline]
 evdev_release+0x245/0x400 drivers/input/evdev.c:449
 __fput+0x408/0xbb0 fs/file_table.c:422
 __fput_sync+0x47/0x50 fs/file_table.c:507
 __do_sys_close fs/open.c:1555 [inline]
 __se_sys_close fs/open.c:1540 [inline]
 __x64_sys_close+0x86/0x100 fs/open.c:1540
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1cab0a9e1a
RSP: 002b:00007f1caa425080 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f1cab1e1f80 RCX: 00007f1cab0a9e1a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f1cab11a074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000006 R14: 00007f1cab1e1f80 R15: 00007ffd411a58a8
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/20 01:42 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing b0fc24f36191 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: rcu detected stall in unix_dgram_recvmsg
2024/06/19 16:01 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing b0fc24f36191 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: rcu detected stall in unix_dgram_recvmsg
* Struck through repros no longer work on HEAD.