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Message-ID: <bacc4301-be1a-4f3f-9da3-1543cbf9874c@lucifer.local>
Date: Wed, 16 Oct 2024 08:06:20 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: syzbot <syzbot+ce483fd06e2061f44f5d@...kaller.appspotmail.com>
Cc: akpm@...ux-foundation.org, liam.howlett@...cle.com,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-usb@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, vbabka@...e.cz,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Marcello Sylvester Bauer <sylv@...v.io>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <bentiss@...nel.org>
Subject: Re: [syzbot] [input?] [usb?] [mm?] INFO: rcu detected stall in
 vma_link_file

+ some people from USB/HID subsystem.

This is really not looking mm-related, as for a second time we've asked
syzbot to re-run and for a second time it's not hit any mm-specific code -
I think this is misattributed - could somebody from the USB/HID side take a
look?

It looks to be something that isn't reproduced by a specific C program but
by a syzkaller USB configuration [0]?

Thanks!

[0]: https://syzkaller.appspot.com/x/repro.syz?x=17336fd0580000

On Tue, Oct 15, 2024 at 01:27:03PM -0700, syzbot wrote:
> Hello,
>
> syzbot has tested the proposed patch but the reproducer is still triggering an issue:
> INFO: rcu detected stall in corrupted
>
> rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
>  0-...D } 2647 jiffies s: 1489 root: 0x1/.
> rcu: blocking rcu_node structures (internal RCU debug):
>
> Sending NMI from CPU 1 to CPUs 0:
> NMI backtrace for cpu 0
> CPU: 0 UID: 0 PID: 2536 Comm: acpid Not tainted 6.12.0-rc3-syzkaller-00033-g80bf308c69a9 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
> RIP: 0010:format_decode+0x94d/0xba0 lib/vsprintf.c:2571
> Code: 41 bd 4c 00 00 00 48 89 5c 24 38 e9 fb fa ff ff e8 68 6a 6f fa 31 f6 31 ff e8 3f 6c 6f fa e8 5a 6a 6f fa 31 db e9 82 f9 ff ff <e8> 4e 6a 6f fa 48 8d 7c 24 38 e8 24 d5 ff ff 48 8b 6c 24 38 0f b6
> RSP: 0000:ffffc900016aea48 EFLAGS: 00000097
> RAX: 0000000000000000 RBX: ffffffff8728c721 RCX: ffffffff86e6726f
> RDX: ffff888115f1ba80 RSI: 0000000000000009 RDI: 0000000000000005
> RBP: ffffffff8728c722 R08: 0000000000000005 R09: 0000000000000009
> R10: 0000000000000005 R11: 0000000000040348 R12: ffffc900016aeb48
> R13: ffffffff8728c721 R14: 0000000000000035 R15: 0000000000000005
> FS:  00007fe77c367740(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000557a1e480818 CR3: 0000000115f98000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>  <NMI>
>  </NMI>
>  <TASK>
>  vsnprintf+0x13d/0x1880 lib/vsprintf.c:2755
>  sprintf+0xcd/0x110 lib/vsprintf.c:3007
>  print_time kernel/printk/printk.c:1362 [inline]
>  info_print_prefix+0x25c/0x350 kernel/printk/printk.c:1388
>  record_print_text+0x141/0x400 kernel/printk/printk.c:1437
>  printk_get_next_message+0x2a6/0x670 kernel/printk/printk.c:2978
>  console_emit_next_record kernel/printk/printk.c:3046 [inline]
>  console_flush_all+0x6ec/0xc60 kernel/printk/printk.c:3180
>  __console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
>  console_unlock+0xd9/0x210 kernel/printk/printk.c:3279
>  vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2407
>  vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:68
>  _printk+0xc8/0x100 kernel/printk/printk.c:2432
>  printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
>  show_trace_log_lvl+0x1b7/0x3d0 arch/x86/kernel/dumpstack.c:285
>  sched_show_task kernel/sched/core.c:7589 [inline]
>  sched_show_task+0x3f0/0x5f0 kernel/sched/core.c:7564
>  show_state_filter+0xee/0x320 kernel/sched/core.c:7634
>  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:1522 [inline]
>  kbd_event+0xcbd/0x17a0 drivers/tty/vt/keyboard.c:1541
>  input_handler_events_default+0x116/0x1b0 drivers/input/input.c:2549
>  input_pass_values+0x777/0x8e0 drivers/input/input.c:126
>  input_event_dispose drivers/input/input.c:352 [inline]
>  input_handle_event+0xb30/0x14d0 drivers/input/input.c:369
>  input_event drivers/input/input.c:398 [inline]
>  input_event+0x83/0xa0 drivers/input/input.c:390
>  hidinput_hid_event+0xa12/0x2410 drivers/hid/hid-input.c:1719
>  hid_process_event+0x4b7/0x5e0 drivers/hid/hid-core.c:1540
>  hid_input_array_field+0x535/0x710 drivers/hid/hid-core.c:1652
>  hid_process_report drivers/hid/hid-core.c:1694 [inline]
>  hid_report_raw_event+0xa02/0x11c0 drivers/hid/hid-core.c:2040
>  __hid_input_report.constprop.0+0x341/0x440 drivers/hid/hid-core.c:2110
>  hid_irq_in+0x35e/0x870 drivers/hid/usbhid/hid-core.c:285
>  __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
>  usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
>  dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1988
>  __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
>  __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1755
>  hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1772
>  handle_softirqs+0x206/0x8d0 kernel/softirq.c:554
>  __do_softirq kernel/softirq.c:588 [inline]
>  invoke_softirq kernel/softirq.c:428 [inline]
>  __irq_exit_rcu kernel/softirq.c:637 [inline]
>  irq_exit_rcu+0xac/0x110 kernel/softirq.c:649
>  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
>  sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1037
>  asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
> RIP: 0033:0x7fe77c3dd773
> Code: 00 f3 a5 48 8d 74 24 88 48 b9 ff ff ff 7f fe ff ff ff 48 21 c8 48 89 44 24 88 41 ba 08 00 00 00 44 89 c7 b8 0e 00 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 06 41 89 c0 41 f7 d8 44 89 c0 5a c3 41
> RSP: 002b:00007ffcef9c0fa0 EFLAGS: 00000246
> RAX: 0000000000000000 RBX: 000055591f199906 RCX: 00007fe77c3dd773
> RDX: 0000000000000000 RSI: 000055591f19f480 RDI: 0000000000000000
> RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000001
> R10: 0000000000000008 R11: 0000000000000246 R12: 00007ffcef9c10a8
> R13: 000055591f199178 R14: 0000000000000001 R15: 000000000000000a
>  </TASK>
>  </TASK>
> task:kworker/u8:1    state:R  running task     stack:32568 pid:9565  tgid:9565  ppid:28     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9568  tgid:9568  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:kworker/u8:9    state:R  running task     stack:28784 pid:9576  tgid:9576  ppid:1148   flags:0x00004000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6861
>  __cond_resched+0x1b/0x30 kernel/sched/core.c:7199
>  _cond_resched include/linux/sched.h:2031 [inline]
>  stop_one_cpu+0x112/0x190 kernel/stop_machine.c:151
>  sched_exec+0x1dc/0x270 kernel/sched/core.c:5453
>  bprm_execve fs/exec.c:1838 [inline]
>  bprm_execve+0x46c/0x1950 fs/exec.c:1821
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9585  tgid:9585  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9599  tgid:9599  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9608  tgid:9608  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f51cee31a90
> RSP: 002b:00007ffd78235dd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f51cef22860 RCX: 00007f51cee31a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f51cef22860 R08: 0000000000000001 R09: d9f10af76f91c837
> R10: 00007ffd78235c90 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f51cef26658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:9615  tgid:9615  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7febdbac2a90
> RSP: 002b:00007ffdc4cdeff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007febdbbb3860 RCX: 00007febdbac2a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007febdbbb3860 R08: 0000000000000001 R09: 9c513921461b8e44
> R10: 00007ffdc4cdeeb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007febdbbb7658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9621  tgid:9621  ppid:11     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f439b8b7a90
> RSP: 002b:00007fffe0ac2d68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f439b9a8860 RCX: 00007f439b8b7a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f439b9a8860 R08: 0000000000000001 R09: ff9d4db23f41e35a
> R10: 00007fffe0ac2c20 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f439b9ac658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:D stack:25424 pid:9627  tgid:9627  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9640  tgid:9640  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24416 pid:9649  tgid:9649  ppid:11     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f9ff0b0ba90
> RSP: 002b:00007ffcc7ed1848 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f9ff0bfc860 RCX: 00007f9ff0b0ba90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f9ff0bfc860 R08: 0000000000000001 R09: 53b7f4bb0ff00e10
> R10: 00007ffcc7ed1700 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f9ff0c00658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9656  tgid:9656  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  __pfx___lock_acquire+0x10/0x10 kernel/locking/lockdep.c:4387
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9664  tgid:9664  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f260c278a90
> RSP: 002b:00007ffca8cbcb18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f260c369860 RCX: 00007f260c278a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f260c369860 R08: 0000000000000001 R09: ec1b067fce940b65
> R10: 00007ffca8cbc9d0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f260c36d658 R15: 0000000000000001
>  </TASK>
> task:kworker/u8:0    state:R  running task     stack:32568 pid:9671  tgid:9671  ppid:11     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9672  tgid:9672  ppid:1114   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f395cc9ea90
> RSP: 002b:00007ffff1d03df8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f395cd8f860 RCX: 00007f395cc9ea90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f395cd8f860 R08: 0000000000000001 R09: 0c83ee7b55e5651c
> R10: 00007ffff1d03cb0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f395cd93658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9678  tgid:9678  ppid:28     flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f4fb9369a90
> RSP: 002b:00007ffde76a6918 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f4fb945a860 RCX: 00007f4fb9369a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f4fb945a860 R08: 0000000000000001 R09: 56a7058e5d32bb87
> R10: 00007ffde76a67d0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f4fb945e658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9684  tgid:9684  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9694  tgid:9694  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f306776fa90
> RSP: 002b:00007ffe0ff593a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3067860860 RCX: 00007f306776fa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3067860860 R08: 0000000000000001 R09: 7fe3f123c3d90a52
> R10: 00007ffe0ff59260 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f3067864658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9701  tgid:9701  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25344 pid:9710  tgid:9710  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9714  tgid:9714  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7fe83ca73a90
> RSP: 002b:00007fff91de4128 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe83cb64860 RCX: 00007fe83ca73a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe83cb64860 R08: 0000000000000001 R09: 0380a4352b815b7d
> R10: 00007fff91de3fe0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe83cb68658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9719  tgid:9719  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9726  tgid:9726  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9734  tgid:9734  ppid:28     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f880ede0a90
> RSP: 002b:00007ffca15eb9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f880eed1860 RCX: 00007f880ede0a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f880eed1860 R08: 0000000000000001 R09: 6855b1290ac23e74
> R10: 00007ffca15eb8b0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f880eed5658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9737  tgid:9737  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7fd1ff7caa90
> RSP: 002b:00007fff7f497088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fd1ff8bb860 RCX: 00007fd1ff7caa90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fd1ff8bb860 R08: 0000000000000001 R09: 93c7e6092e4e8d94
> R10: 00007fff7f496f40 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fd1ff8bf658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9741  tgid:9741  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f3b768dca90
> RSP: 002b:00007ffed6373f08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3b769cd860 RCX: 00007f3b768dca90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3b769cd860 R08: 0000000000000001 R09: cbb88f32d31ba940
> R10: 00007ffed6373dc0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f3b769d1658 R15: 0000000000000001
>  </TASK>
> task:kworker/u8:1    state:R  running task     stack:32568 pid:9750  tgid:9750  ppid:28     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9752  tgid:9752  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:kworker/u8:7    state:R  running task     stack:32568 pid:9755  tgid:9755  ppid:1114   flags:0x00004000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9760  tgid:9760  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:kworker/u8:1    state:R  running task     stack:32568 pid:9762  tgid:9762  ppid:28     flags:0x00004000
> Call Trace:
>  <TASK>
>  __switch_to_asm+0x70/0x70
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9766  tgid:9766  ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9772  tgid:9772  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f42d3bdba90
> RSP: 002b:00007fffe30e2e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f42d3ccc860 RCX: 00007f42d3bdba90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f42d3ccc860 R08: 0000000000000001 R09: 4e69d63dc7a7fcc0
> R10: 00007fffe30e2cc0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f42d3cd0658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9778  tgid:9778  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9786  tgid:9786  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9796  tgid:9796  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f68f99e1a90
> RSP: 002b:00007ffe63673f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f68f9ad2860 RCX: 00007f68f99e1a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f68f9ad2860 R08: 0000000000000001 R09: f47c3fb77550af2e
> R10: 00007ffe63673e10 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f68f9ad6658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9801  tgid:9801  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7fb781c83a90
> RSP: 002b:00007ffd60d9ea28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fb781d74860 RCX: 00007fb781c83a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fb781d74860 R08: 0000000000000001 R09: 215fd20ce0e6152e
> R10: 00007ffd60d9e8e0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fb781d78658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9809  tgid:9809  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9818  tgid:9818  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f9722143a90
> RSP: 002b:00007ffe05d6de28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f9722234860 RCX: 00007f9722143a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f9722234860 R08: 0000000000000001 R09: 6b4b8080cd93a00c
> R10: 00007ffe05d6dce0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f9722238658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9825  tgid:9825  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9835  tgid:9835  ppid:11     flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9845  tgid:9845  ppid:1114   flags:0x00000000
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7fdda0a27a90
> RSP: 002b:00007ffe05bd09d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fdda0b18860 RCX: 00007fdda0a27a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fdda0b18860 R08: 0000000000000001 R09: ff36ed7236d48a13
> R10: 00007ffe05bd0890 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fdda0b1c658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9851  tgid:9851  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7fe833113a90
> RSP: 002b:00007fff2a01fc28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fe833204860 RCX: 00007fe833113a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fe833204860 R08: 0000000000000001 R09: 35ed84c02d71e9d4
> R10: 00007fff2a01fae0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fe833208658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9857  tgid:9857  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f3964397a90
> RSP: 002b:00007ffd9166d4b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f3964488860 RCX: 00007f3964397a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f3964488860 R08: 0000000000000001 R09: 8f528e78319cc9bc
> R10: 00007ffd9166d370 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f396448c658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9865  tgid:9865  ppid:11     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  </TASK>
> task:modprobe        state:R  running task     stack:25344 pid:9874  tgid:9874  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7ff415499a90
> RSP: 002b:00007ffc31aa1ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007ff41558a860 RCX: 00007ff415499a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007ff41558a860 R08: 0000000000000001 R09: bec4dee6b5bd8695
> R10: 00007ffc31aa1d90 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007ff41558e658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9880  tgid:9880  ppid:46     flags:0x00000000
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9882  tgid:9882  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7f6775f63a90
> RSP: 002b:00007ffc48cbf6e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007f6776054860 RCX: 00007f6775f63a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007f6776054860 R08: 0000000000000001 R09: 2978e367673e3d81
> R10: 00007ffc48cbf5a0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007f6776058658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25136 pid:9888  tgid:9888  ppid:46     flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7fa6ea053a90
> RSP: 002b:00007ffca5ca66d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007fa6ea144860 RCX: 00007fa6ea053a90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007fa6ea144860 R08: 0000000000000001 R09: e7a3475f3e0f6286
> R10: 00007ffca5ca6590 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007fa6ea148658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:24000 pid:9895  tgid:9895  ppid:1148   flags:0x00004002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>  do_exit+0x1de7/0x2ce0 kernel/exit.c:990
>  do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
>  __do_sys_exit_group kernel/exit.c:1099 [inline]
>  __se_sys_exit_group kernel/exit.c:1097 [inline]
>  __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1097
>  x64_sys_call+0x14a9/0x16a0 arch/x86/include/generated/asm/syscalls_64.h:232
>  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: 0033:0x7ff086b4da90
> RSP: 002b:00007ffc358ac5f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
> RAX: ffffffffffffffda RBX: 00007ff086c3e860 RCX: 00007ff086b4da90
> RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
> RBP: 00007ff086c3e860 R08: 0000000000000001 R09: 29caad31773cb941
> R10: 00007ffc358ac4b0 R11: 0000000000000246 R12: 0000000000000000
> R13: 0000000000000001 R14: 00007ff086c42658 R15: 0000000000000001
>  </TASK>
> task:modprobe        state:R  running task     stack:25424 pid:9901  tgid:9901  ppid:1114   flags:0x00000002
> Call Trace:
>  <TASK>
>  </TASK>
> task:modprobe        state:R  running task     stack:24720 pid:9911  tgid:9911  ppid:1148   flags:0x00000002
> Call Trace:
>  <TASK>
>  context_switch kernel/sched/core.c:5322 [inline]
>  __schedule+0x105f/0x34b0 kernel/sched/core.c:6682
>  do_task_dead+0xd6/0x110 kernel/sched/core.c:6698
>
>
> Tested on:
>
> commit:         80bf308c mm/mglru: only clear kswapd_failures if recla..
> git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/ mm-hotfixes-unstable
> console output: https://syzkaller.appspot.com/x/log.txt?x=1600445f980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9878fe11046ea2c6
> dashboard link: https://syzkaller.appspot.com/bug?extid=ce483fd06e2061f44f5d
> compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
>
> Note: no patches were applied.

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