INFO: rcu detected stall in vhci_rx_loop

Status: auto-obsoleted due to no activity on 2025/04/24 03:17
Reported-by: syzbot+3a6f26dae738d7b874cc@syzkaller.appspotmail.com
First crash: 578d, last: 578d
▶ ▼ Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in vhci_rx_loop usb mm 1 2 576d 595d 0/29 auto-obsoleted due to no activity on 2025/04/15 12:39

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=ec9c/1/0x4000000000000000 softirq=26369/26369 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7542/2:b..l P7838/1:b..l
	(detected by 1, t=10502 jiffies, g=35705, q=35 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7842 Comm: vhci_rx Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
RIP: 0010:__hrtimer_run_queues+0x4c2/0xe50 kernel/time/hrtimer.c:1753
Code: e8 f3 67 68 00 4c 8b 23 4c 89 f7 48 8b b4 24 a0 00 00 00 e8 90 44 43 09 0f 1f 44 00 00 e8 b6 d1 10 00 65 44 8b 2d 4e 4f 88 7e <48> 8b 44 24 30 42 0f b6 04 38 84 c0 0f 85 74 04 00 00 8b 1d 4e 43
RSP: 0018:ffffc90000007d60 EFLAGS: 00000006
RAX: ffffffff8179ca4a RBX: ffff888058c3c368 RCX: ffff88802e5c0000
RDX: 0000000000010000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffc90000007ea8 R08: dffffc0000000000 R09: ffffed10171c5499
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff88db1ea0
R13: 0000000000000000 R14: ffff8880b8e2a4c0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c435465 CR3: 0000000057fb6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0xd67/0x1000 kernel/printk/printk.c:2786
Code: f7 1b 00 44 0f b6 74 24 1f 48 83 7c 24 30 00 75 07 e8 8d f7 1b 00 eb 06 e8 86 f7 1b 00 fb 48 c7 84 24 a0 00 00 00 0e 36 e0 45 <43> c7 04 2c 00 00 00 00 4b c7 44 2c 0a 00 00 00 00 4b c7 44 2c 12
RSP: 0018:ffffc900035a77e0 EFLAGS: 00000287
RAX: ffffffff816ea47a RBX: ffffffff816ea1bc RCX: 0000000000100000
RDX: ffffc90019b6a000 RSI: 00000000000013ff RDI: 0000000000001400
RBP: ffffc900035a7a90 R08: ffffffff816ea452 R09: fffffbfff2249c4d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920006b4f10 R14: 0000000000000001 R15: 0000000000000000
 console_unlock+0x278/0x7c0 kernel/printk/printk.c:2906
 vprintk_emit+0x523/0x740 kernel/printk/printk.c:2303
 _printk+0xd1/0x111 kernel/printk/printk.c:2328
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:224 [inline]
 vhci_rx_loop+0x6df/0x1050 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
task:syz.1.1245      state:R  running task     stack:25864 pid:7838  ppid:4255   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6727
 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6751
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x128/0x130 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __wake_up_common_lock kernel/sched/wait.c:140 [inline]
 __wake_up+0x128/0x1c0 kernel/sched/wait.c:160
 sock_def_wakeup+0x154/0x260 net/core/sock.c:3285
 unix_release_sock+0x6e5/0xcf0 net/unix/af_unix.c:625
 unix_release+0x88/0xc0 net/unix/af_unix.c:1026
 __sock_release net/socket.c:654 [inline]
 sock_close+0xcd/0x230 net/socket.c:1400
 __fput+0x3f6/0x8d0 fs/file_table.c:320
 task_work_run+0x246/0x300 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fed99b85d29
RSP: 002b:00007fffa8532798 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000038a8e RCX: 00007fed99b85d29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fed99d77ba0 R08: 0000000000000001 R09: 00007fffa8532a8f
R10: 00007fed99800000 R11: 0000000000000246 R12: 0000000000038b73
R13: 00007fed99d75fa0 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>
task:syz-executor    state:R  running task     stack:21112 pid:7542  ppid:7537   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 9f 8e 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90003c87860 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000790f18 RCX: 1ffff92000790eb8
RDX: dffffc0000000000 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5e6840
RBP: ffffc90003c879c0 R08: dffffc0000000000 R09: fffffbfff2249c4d
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000790f14
R13: dffffc0000000000 R14: ffffc90003c878c0 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 rhashtable_lookup_fast include/linux/rhashtable.h:663 [inline]
 __netlink_lookup+0x4a/0x6d0 net/netlink/af_netlink.c:499
 netlink_lookup+0xda/0x200 net/netlink/af_netlink.c:519
 netlink_getsockbyportid net/netlink/af_netlink.c:1145 [inline]
 netlink_unicast+0x1a1/0x970 net/netlink/af_netlink.c:1331
 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1859
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 __sys_sendto+0x480/0x600 net/socket.c:2153
 __do_sys_sendto net/socket.c:2165 [inline]
 __se_sys_sendto net/socket.c:2161 [inline]
 __x64_sys_sendto+0xda/0xf0 net/socket.c:2161
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa01b787bbc
RSP: 002b:00007fff5230ac30 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fa01c4a4620 RCX: 00007fa01b787bbc
RDX: 0000000000000028 RSI: 00007fa01c4a4670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff5230ac84 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fa01c4a4670 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g35705 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=15484
rcu: rcu_preempt kthread starved for 10502 jiffies! g35705 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:26712 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7842 Comm: vhci_rx Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline]
RIP: 0010:lock_release+0x12d/0xa20 kernel/locking/lockdep.c:5675
Code: 65 8b 05 26 b0 97 7e 85 c0 0f 85 1c 05 00 00 65 4c 8b 35 96 a6 97 7e 49 8d 9e dc 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 0f 85 da 05 00 00 83 3b 00 0f 85 f0 04 00 00 4c 89 74 24 10
RSP: 0018:ffffc90000007b60 EFLAGS: 00000803
RAX: 0000000000000000 RBX: ffff88802e5c0adc RCX: ffffffff816ac857
RDX: 0000000000000000 RSI: ffffffff8b5e6820 RDI: ffffffff8b5e67e0
RBP: ffffc90000007c90 R08: dffffc0000000000 R09: fffffbfff1d36176
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000f78
R13: ffffffff8179fafd R14: ffff88802e5c0000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c435465 CR3: 0000000057fb6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
 debug_hrtimer_deactivate kernel/time/hrtimer.c:426 [inline]
 debug_deactivate+0x1d/0x280 kernel/time/hrtimer.c:482
 __run_hrtimer kernel/time/hrtimer.c:1657 [inline]
 __hrtimer_run_queues+0x334/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0xd67/0x1000 kernel/printk/printk.c:2786
Code: f7 1b 00 44 0f b6 74 24 1f 48 83 7c 24 30 00 75 07 e8 8d f7 1b 00 eb 06 e8 86 f7 1b 00 fb 48 c7 84 24 a0 00 00 00 0e 36 e0 45 <43> c7 04 2c 00 00 00 00 4b c7 44 2c 0a 00 00 00 00 4b c7 44 2c 12
RSP: 0018:ffffc900035a77e0 EFLAGS: 00000287
RAX: ffffffff816ea47a RBX: ffffffff816ea1bc RCX: 0000000000100000
RDX: ffffc90019b6a000 RSI: 00000000000013ff RDI: 0000000000001400
RBP: ffffc900035a7a90 R08: ffffffff816ea452 R09: fffffbfff2249c4d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920006b4f10 R14: 0000000000000001 R15: 0000000000000000
 console_unlock+0x278/0x7c0 kernel/printk/printk.c:2906
 vprintk_emit+0x523/0x740 kernel/printk/printk.c:2303
 _printk+0xd1/0x111 kernel/printk/printk.c:2328
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:224 [inline]
 vhci_rx_loop+0x6df/0x1050 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [kworker/1:9:4380]
Modules linked in:
irq event stamp: 246234
hardirqs last  enabled at (246233): [<ffffffff8ac00d46>] asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
hardirqs last disabled at (246234): [<ffffffff8ab299da>] sysvec_apic_timer_interrupt+0xa/0xc0 arch/x86/kernel/apic/apic.c:1118
softirqs last  enabled at (195450): [<ffffffff815454b7>] __do_softirq kernel/softirq.c:605 [inline]
softirqs last  enabled at (195450): [<ffffffff815454b7>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last  enabled at (195450): [<ffffffff815454b7>] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
softirqs last disabled at (195421): [<ffffffff815454b7>] __do_softirq kernel/softirq.c:605 [inline]
softirqs last disabled at (195421): [<ffffffff815454b7>] invoke_softirq kernel/softirq.c:445 [inline]
softirqs last disabled at (195421): [<ffffffff815454b7>] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
CPU: 1 PID: 4380 Comm: kworker/1:9 Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events fqdir_free_fn
RIP: 0010:csd_lock_wait kernel/smp.c:424 [inline]
RIP: 0010:smp_call_function_single+0x4a3/0x2680 kernel/smp.c:787
Code: b6 04 23 84 c0 0f 85 70 01 00 00 45 8b 2e 44 89 ee 83 e6 01 31 ff e8 3c 8e 0b 00 41 83 e5 01 75 07 e8 d1 8a 0b 00 eb 3e f3 90 <42> 0f b6 04 23 84 c0 75 10 41 f7 06 01 00 00 00 74 25 e8 b6 8a 0b
RSP: 0018:ffffc9000458f820 EFLAGS: 00000293
RAX: ffffffff817f114a RBX: 1ffff920008b1f21 RCX: ffff88801ab50000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000458fba0 R08: ffffffff817f1124 R09: fffff520008b1ecd
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffc9000458f908 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000240 CR3: 00000000215a9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 rcu_barrier+0x323/0x5f0 kernel/rcu/tree.c:4071
 fqdir_free_fn+0x2e/0x130 net/ipv4/inet_fragment.c:166
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7842 Comm: vhci_rx Not tainted 6.1.124-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:kasan_check_range+0x1ac/0x290 mm/kasan/generic.c:189
Code: 4c 89 d5 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 39 00 0f 85 a2 00 00 00 49 ff c1 48 ff cd 75 ee 5b <41> 5e 41 5f 5d c3 45 84 f6 75 61 41 f7 c6 00 ff 00 00 75 5d 41 f7
RSP: 0018:ffffc90000007a60 EFLAGS: 00000056
RAX: 0000000000000001 RBX: 000000000000002c RCX: ffffffff816ab9e0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9124e260
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff2249c4d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802e5c0ad8
R13: ffff88802e5c0000 R14: fffffbfff2249c4d R15: 1ffff11005cb8165
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c435465 CR3: 0000000057fb6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 __lock_acquire+0x11d0/0x1f80 kernel/locking/lockdep.c:5046
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 advance_sched+0x6ec/0x970 net/sched/sch_taprio.c:753
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_emit_next_record+0xd67/0x1000 kernel/printk/printk.c:2786
Code: f7 1b 00 44 0f b6 74 24 1f 48 83 7c 24 30 00 75 07 e8 8d f7 1b 00 eb 06 e8 86 f7 1b 00 fb 48 c7 84 24 a0 00 00 00 0e 36 e0 45 <43> c7 04 2c 00 00 00 00 4b c7 44 2c 0a 00 00 00 00 4b c7 44 2c 12
RSP: 0018:ffffc900035a77e0 EFLAGS: 00000287
RAX: ffffffff816ea47a RBX: ffffffff816ea1bc RCX: 0000000000100000
RDX: ffffc90019b6a000 RSI: 00000000000013ff RDI: 0000000000001400
RBP: ffffc900035a7a90 R08: ffffffff816ea452 R09: fffffbfff2249c4d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920006b4f10 R14: 0000000000000001 R15: 0000000000000000
 console_unlock+0x278/0x7c0 kernel/printk/printk.c:2906
 vprintk_emit+0x523/0x740 kernel/printk/printk.c:2303
 _printk+0xd1/0x111 kernel/printk/printk.c:2328
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:224 [inline]
 vhci_rx_loop+0x6df/0x1050 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/14 03:16 linux-6.1.y c63962be84ef b1f1cd88 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: rcu detected stall in vhci_rx_loop
* Struck through repros no longer work on HEAD.