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Message-ID: <6713d23a.050a0220.1e4b4d.0029.GAE@google.com>
Date: Sat, 19 Oct 2024 08:37:30 -0700
From: syzbot <syzbot+a234c2d63e0c171ca10e@...kaller.appspotmail.com>
To: brauner@...nel.org, gregkh@...uxfoundation.org, jack@...e.cz,
linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-serial@...r.kernel.org, linux-usb@...r.kernel.org,
syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: [syzbot] [serial?] BUG: soft lockup in debug_check_no_obj_freed
Hello,
syzbot found the following issue on:
HEAD commit: 07b887f8236e xhci: add helper to stop endpoint and wait fo..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=1101fc5f980000
kernel config: https://syzkaller.appspot.com/x/.config?x=9878fe11046ea2c6
dashboard link: https://syzkaller.appspot.com/bug?extid=a234c2d63e0c171ca10e
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13e64430580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c447438ae517/disk-07b887f8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1430abb44ca1/vmlinux-07b887f8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/53e62be3705b/bzImage-07b887f8.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a234c2d63e0c171ca10e@...kaller.appspotmail.com
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
0-...D
} 2645 jiffies s: 773 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: 5465 Comm: udevd Not tainted 6.12.0-rc3-syzkaller-00051-g07b887f8236e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:407
Code: 72 b5 fe 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 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 f8 ee 0d ff eb a2 e8 81 ef
RSP: 0018:ffffc90000006f08 EFLAGS: 00000002
RAX: dffffc0000000060 RBX: 00000000000003fd RCX: 0000000000000000
RDX: 00000000000003fd RSI: ffffffff82a06c30 RDI: ffffffff93635660
RBP: ffffffff93635620 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000020 R14: fffffbfff26c6b1e R15: dffffc0000000000
FS: 00007fefb97f9c80(0000) GS:ffff8881f5800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2dd5ffff CR3: 000000011c53e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<IRQ>
serial_in drivers/tty/serial/8250/8250.h:137 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:159 [inline]
wait_for_lsr+0xda/0x180 drivers/tty/serial/8250/8250_port.c:2068
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3315 [inline]
serial8250_console_write+0xf5a/0x17c0 drivers/tty/serial/8250/8250_port.c:3393
console_emit_next_record kernel/printk/printk.c:3092 [inline]
console_flush_all+0x800/0xc60 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+0x90/0xb0 arch/x86/kernel/apic/apic.c:1037
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 76 80 42 fa 48 89 df e8 8e fd 42 fa f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 d5 3f 37 fa 65 8b 05 b6 fd 12 79 85 c0 74 16 5b
RSP: 0018:ffffc90001abfbd8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff935bf3e0 RCX: 1ffffffff14ac291
RDX: 0000000000000000 RSI: ffffffff8727f1c0 RDI: ffffffff8746ea80
RBP: 0000000000000286 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8a564d8f R11: 0000000000000000 R12: ffffffff935bf3d8
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888102e9c000
__debug_check_no_obj_freed lib/debugobjects.c:998 [inline]
debug_check_no_obj_freed+0x328/0x600 lib/debugobjects.c:1019
slab_free_hook mm/slub.c:2273 [inline]
slab_free mm/slub.c:4579 [inline]
kfree+0x294/0x480 mm/slub.c:4727
do_delayed_call include/linux/delayed_call.h:28 [inline]
vfs_readlink+0x149/0x380 fs/namei.c:5272
do_readlinkat+0x24c/0x390 fs/stat.c:551
__do_sys_readlink fs/stat.c:574 [inline]
__se_sys_readlink fs/stat.c:571 [inline]
__x64_sys_readlink+0x78/0xc0 fs/stat.c:571
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: 0033:0x7fefb9925d47
Code: 73 01 c3 48 8b 0d e1 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffee0fa4b98 EFLAGS: 00000206 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00000000000000ff RCX: 00007fefb9925d47
RDX: 0000000000000400 RSI: 00007ffee0fa4fa8 RDI: 00007ffee0fa4ba8
RBP: 00007ffee0fa53e8 R08: 0000562cf15ca1fd R09: 0000000000000000
R10: 0000000000000010 R11: 0000000000000206 R12: 0000000000000200
R13: 00007ffee0fa4fa8 R14: 00007ffee0fa4ba8 R15: 00007ffee0fa5aa9
</TASK>
</TASK>
task:kworker/u8:6 state:R running task stack:32568 pid:6065 tgid:6065 ppid:282 flags:0x00004000
Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>
task:modprobe state:R running task stack:25408 pid:6080 tgid:6080 ppid:243 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:kworker/u8:7 state:R running task stack:32568 pid:6082 tgid:6082 ppid:1112 flags:0x00004000
Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>
task:modprobe state:R running task stack:25136 pid:6087 tgid:6087 ppid:243 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: 0033:0x7f175529ea90
RSP: 002b:00007ffd1fc1f4a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f175538f860 RCX: 00007f175529ea90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f175538f860 R08: 0000000000000001 R09: 8d0dcd55e87a9e27
R10: 00007ffd1fc1f360 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f1755393658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24704 pid:6091 tgid:6091 ppid:1168 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:26016 pid:6097 tgid:6097 ppid:1168 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:23984 pid:6100 tgid:6100 ppid:1168 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:24704 pid:6105 tgid:6105 ppid:1168 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: 0033:0x7f347a9efa90
RSP: 002b:00007ffe0433c488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f347aae0860 RCX: 00007f347a9efa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f347aae0860 R08: 0000000000000001 R09: 1c55e6acb1b2b457
R10: 00007ffe0433c340 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f347aae4658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:6109 tgid:6109 ppid:243 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:kworker/u8:3 state:R running task stack:32568 pid:6115 tgid:6115 ppid:46 flags:0x00004000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6116 tgid:6116 ppid:243 flags:0x00000000
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
might_resched include/linux/kernel.h:73 [inline]
remove_vma+0x32/0x1a0 mm/vma.c:328
exit_mmap+0x4e0/0xb30 mm/mmap.c:1888
</TASK>
task:modprobe state:R running task stack:25408 pid:6119 tgid:6119 ppid:46 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6124 tgid:6124 ppid:1168 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: 0033:0x7fb260c95a90
RSP: 002b:00007fffa19bd598 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb260d86860 RCX: 00007fb260c95a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fb260d86860 R08: 0000000000000001 R09: c8beb5f7eefeb567
R10: 00007fffa19bd450 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fb260d8a658 R15: 0000000000000001
</TASK>
task:kworker/u8:3 state:R running task stack:28784 pid:6128 tgid:6128 ppid:46 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
</TASK>
task:modprobe state:R running task stack:24416 pid:6135 tgid:6135 ppid:1168 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:6142 tgid:6142 ppid:1168 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: 0033:0x7f7623e7aa90
RSP: 002b:00007ffc42b305a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f7623f6b860 RCX: 00007f7623e7aa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f7623f6b860 R08: 0000000000000001 R09: e2a4624ea37f7418
R10: 00007ffc42b30460 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f7623f6f658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25408 pid:6147 tgid:6147 ppid:37 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: 0033:0x7f09bda7aa90
RSP: 002b:00007ffcfb5d2bc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f09bdb6b860 RCX: 00007f09bda7aa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f09bdb6b860 R08: 0000000000000001 R09: e9ee8b4e2d520c1d
R10: 00007ffcfb5d2a80 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f09bdb6f658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24704 pid:6152 tgid:6152 ppid:1168 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6155 tgid:6155 ppid:37 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:6162 tgid:6162 ppid:243 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: 0033:0x7f6ae101ca90
RSP: 002b:00007ffe8a140c58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f6ae110d860 RCX: 00007f6ae101ca90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f6ae110d860 R08: 0000000000000001 R09: 881cc29ae1fba195
R10: 00007ffe8a140b10 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f6ae1111658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:23984 pid:6164 tgid:6164 ppid:1168 flags:0x00000000
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
</TASK>
task:modprobe state:R running task stack:25408 pid:6172 tgid:6172 ppid:243 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: 0033:0x7f5ee9af4a90
RSP: 002b:00007ffc18c668c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5ee9be5860 RCX: 00007f5ee9af4a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5ee9be5860 R08: 0000000000000001 R09: 6ac5e88e10cb51a5
R10: 00007ffc18c66780 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5ee9be9658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24704 pid:6175 tgid:6175 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: 0033:0x7fbcf9197a90
RSP: 002b:00007ffeb25b2738 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fbcf9288860 RCX: 00007fbcf9197a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fbcf9288860 R08: 0000000000000001 R09: 203a0cb64f1957e4
R10: 00007ffeb25b25f0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fbcf928c658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24416 pid:6183 tgid:6183 ppid:243 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:6184 tgid:6184 ppid:1168 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:6186 tgid:6186 ppid:37 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: 0033:0x7fd04e702a90
RSP: 002b:00007ffc879c8398 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fd04e7f3860 RCX: 00007fd04e702a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fd04e7f3860 R08: 0000000000000001 R09: 03af5961ba57cc0e
R10: 00007ffc879c8250 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd04e7f7658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:23984 pid:6187 tgid:6187 ppid:243 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: 0033:0x7fe935edaa90
RSP: 002b:00007ffcfdc96a28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fe935fcb860 RCX: 00007fe935edaa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007fe935fcb860 R08: 0000000000000001 R09: 2e026b9deafd7ace
R10: 00007ffcfdc968e0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fe935fcf658 R15: 0000000000000001
</TASK>
task:kworker/u8:8 state:R running task stack:28784 pid:6196 tgid:6196 ppid:1168 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
</TASK>
task:modprobe state:R running task stack:25136 pid:6200 tgid:6200 ppid:37 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:kworker/u8:2 state:R running task stack:32568 pid:6204 tgid:6204 ppid:37 flags:0x00004000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:24704 pid:6206 tgid:6206 ppid:1168 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:kworker/u8:3 state:R running task stack:32568 pid:6213 tgid:6213 ppid:46 flags:0x00004000
Call Trace:
<TASK>
</TASK>
task:kworker/u8:8 state:R running task stack:32568 pid:6224 tgid:6224 ppid:1168 flags:0x00004000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:kworker/u8:5 state:R running task stack:32568 pid:6232 tgid:6232 ppid:243 flags:0x00004000
Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>
task:modprobe state:R running task stack:23984 pid:6233 tgid:6233 ppid:1112 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:kworker/u8:5 state:R running task stack:32568 pid:6242 tgid:6242 ppid:243 flags:0x00004000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6243 tgid:6243 ppid:46 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6253 tgid:6253 ppid:1112 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:25408 pid:6256 tgid:6256 ppid:243 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: 0033:0x7f1aa73c7a90
RSP: 002b:00007ffd822968f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f1aa74b8860 RCX: 00007f1aa73c7a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f1aa74b8860 R08: 0000000000000001 R09: 772b712b87a2229b
R10: 00007ffd822967b0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f1aa74bc658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:24704 pid:6261 tgid:6261 ppid:1112 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: 0033:0x7f24fe1afa90
RSP: 002b:00007fffa5d033a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f24fe2a0860 RCX: 00007f24fe1afa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f24fe2a0860 R08: 0000000000000001 R09: a3709c33888e2dfd
R10: 00007fffa5d03260 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f24fe2a4658 R15: 0000000000000001
</TASK>
task:kworker/u8:2 state:R running task stack:28784 pid:6264 tgid:6264 ppid:37 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
</TASK>
task:modprobe state:R running task stack:24416 pid:6273 tgid:6273 ppid:46 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6282 tgid:6282 ppid:1168 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:24704 pid:6285 tgid:6285 ppid:243 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:kworker/u8:8 state:R running task stack:32568 pid:6292 tgid:6292 ppid:1168 flags:0x00004000
Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>
task:modprobe state:R running task stack:25408 pid:6295 tgid:6295 ppid:243 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__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
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
</TASK>
task:modprobe state:R running task stack:25408 pid:6296 tgid:6296 ppid:37 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__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
</TASK>
task:modprobe state:R running task stack:25408 pid:6298 tgid:6298 ppid:243 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:25408 pid:6300 tgid:6300 ppid:37 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: 0033:0x7f19326fba90
RSP: 002b:00007ffc90dba708 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f19327ec860 RCX: 00007f19326fba90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f19327ec860 R08: 0000000000000001 R09: 468f387cc50540c0
R10: 00007ffc90dba5c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f19327f0658 R15: 0000000000000001
</TASK>
task:modprobe state:R running task stack:25136 pid:6306 tgid:6306 ppid:243 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6313 tgid:6313 ppid:243 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: 0033:0x7f5bdbbcfa90
RSP: 002b:00007ffc0f4a1fa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f5bdbcc0860 RCX: 00007f5bdbbcfa90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f5bdbcc0860 R08: 0000000000000001 R09: 94314777406a5a21
R10: 00007ffc0f4a1e60 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f5bdbcc4658 R15: 0000000000000001
</TASK>
task:kworker/u8:2 state:R running task stack:32568 pid:6321 tgid:6321 ppid:37 flags:0x00004000
Call Trace:
<TASK>
__switch_to_asm+0x70/0x70
</TASK>
task:modprobe state:R running task stack:24704 pid:6322 tgid:6322 ppid:1168 flags:0x00000002
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:25408 pid:6330 tgid:6330 ppid:1168 flags:0x00000002
Call Trace:
<TASK>
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
</TASK>
task:modprobe state:R running task stack:25408 pid:6336 tgid:6336 ppid:37 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
__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
</TASK>
task:modprobe state:R running task stack:25408 pid:6340 tgid:6340 ppid:1168 flags:0x00000000
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x105f/0x34b0 kernel/sched/core.c:6682
</TASK>
task:kworker/u8:2 state:R running task stack:32568 pid:6345 tgid:6345 ppid:37 flags:0x00004000
Call Trace:
<TASK>
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
task:modprobe state:R running task stack:24704 pid:6348 tgid:6348 ppid:1168 flags:0x00000000
Call Trace:
<TASK>
</TASK>
task:modprobe state:R running task stack:23984 pid:6352 tgid:6352 ppid:46 flags:0x00000002
Call Trace:
<TASK>
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
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If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
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