syzbot


INFO: rcu detected stall in packet_rcv (3)

Status: auto-obsoleted due to no activity on 2024/11/13 10:03
Subsystems: net bpf
[Documentation on labels]
First crash: 385d, last: 360d
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in packet_rcv (2) net 1 1 593d 593d 0/29 auto-obsoleted due to no activity on 2024/03/25 03:49
upstream INFO: rcu detected stall in packet_rcv net 1 1 1390d 1390d 0/29 auto-closed as invalid on 2021/12/19 00:49

Sample crash report:
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: {
 0-....
 } 2635 jiffies s: 2165 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):

Sending NMI from CPU 1 to CPUs 0:
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.11.0-rc1-syzkaller-00012-gd483f034f032 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:io_serial_out+0x0/0xb0 drivers/tty/serial/8250/8250_port.c:410
Code: ff ff 4c 89 e7 e8 10 cb 0f ff e9 33 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 55 41 89 d5 41 54 55 48 89 fd 53 89 f3 e8 59 d9 ba
RSP: 0018:ffffc90000007758 EFLAGS: 00000046
RAX: 0000000000033f70 RBX: ffffffff8de06665 RCX: ffffc90001001000
RDX: 0000000000000036 RSI: 0000000000000000 RDI: ffffffff8dfc86c0
RBP: 0000000000000036 R08: 0000000000000001 R09: 000000000000000a
R10: 0000000000000036 R11: 0000000000000000 R12: 0000000000000004
R13: 0000000000000010 R14: ffffffff82988b20 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f6200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f348f30008 CR3: 0000000115b42000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 serial_out drivers/tty/serial/8250/8250.h:142 [inline]
 serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3322 [inline]
 serial8250_console_write+0xce7/0x1090 drivers/tty/serial/8250/8250_port.c:3393
 console_emit_next_record kernel/printk/printk.c:2983 [inline]
 console_flush_all+0x53c/0xd70 kernel/printk/printk.c:3049
 console_unlock+0xae/0x290 kernel/printk/printk.c:3118
 vprintk_emit kernel/printk/printk.c:2348 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2373
 int_irq+0x1b7/0x270 drivers/media/usb/gspca/gspca.c:104
 __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:1987
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:run_filter+0x2/0x2c0 net/packet/af_packet.c:2142
Code: e8 33 f1 5c fb e9 26 f5 ff ff 4c 89 f7 e8 26 f1 5c fb e9 ee f4 ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 55 <49> 89 fd 41 54 55 48 89 f5 53 89 d3 e8 8d fe 07 fb e8 48 72 ee fa
RSP: 0018:ffffc900000ff118 EFLAGS: 00000246
RAX: 0000000000000042 RBX: ffff888116f65780 RCX: ffffffff864bbc8f
RDX: 0000000000000042 RSI: ffff88810f300000 RDI: ffff888116f65780
RBP: ffff88810f300000 R08: 0000000000000003 R09: 000000000000ffff
R10: 0000000000000040 R11: 0000000000000000 R12: ffff888105b18000
R13: ffff888116f65850 R14: 0000000000000001 R15: ffff888118edf44e
 packet_rcv+0x357/0x1530 net/packet/af_packet.c:2221
 deliver_skb net/core/dev.c:2237 [inline]
 deliver_ptype_list_skb net/core/dev.c:2252 [inline]
 __netif_receive_skb_core.constprop.0+0xd7a/0x41e0 net/core/dev.c:5611
 __netif_receive_skb_list_core+0x357/0x950 net/core/dev.c:5736
 __netif_receive_skb_list net/core/dev.c:5803 [inline]
 netif_receive_skb_list_internal+0x753/0xda0 net/core/dev.c:5895
 gro_normal_list include/net/gro.h:515 [inline]
 gro_normal_one include/net/gro.h:528 [inline]
 napi_skb_finish net/core/gro.c:609 [inline]
 napi_gro_receive+0x9c0/0xbf0 net/core/gro.c:639
 virtnet_receive_done+0xb17/0x1bd0 drivers/net/virtio_net.c:2360
 receive_buf+0x4ae/0x4590 drivers/net/virtio_net.c:2404
 virtnet_receive_packets drivers/net/virtio_net.c:2699 [inline]
 virtnet_receive drivers/net/virtio_net.c:2723 [inline]
 virtnet_poll+0xef7/0x28c0 drivers/net/virtio_net.c:2818
 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6771
 napi_poll net/core/dev.c:6840 [inline]
 net_rx_action+0xa92/0x1010 net/core/dev.c:6962
 handle_softirqs+0x209/0x8e0 kernel/softirq.c:554
 run_ksoftirqd kernel/softirq.c:928 [inline]
 run_ksoftirqd+0x3a/0x60 kernel/softirq.c:920
 smpboot_thread_fn+0x661/0xa10 kernel/smpboot.c:164
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_pac7302 3-1:0.0: URB error -71, resubmitting
gspca_main: Resubmit URB failed with error -19

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/02 06:15 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d483f034f032 1e9c4cf3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: rcu detected stall in packet_rcv
2024/07/21 12:12 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 3c3ff7be9729 b88348e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: rcu detected stall in packet_rcv
2024/07/21 02:47 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 3c3ff7be9729 b88348e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: rcu detected stall in packet_rcv
2024/08/15 10:02 bpf-next b97ce54743e5 e4bacdaf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce BUG: soft lockup in packet_rcv
* Struck through repros no longer work on HEAD.