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INFO: rcu detected stall in inet_stream_connect (3)

Status: auto-obsoleted due to no activity on 2024/08/04 05:17
Subsystems: net
[Documentation on labels]
First crash: 440d, last: 440d
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in inet_stream_connect (2) kernel 1 1 2056d 2056d 0/29 closed as invalid on 2019/12/04 14:04
upstream INFO: rcu detected stall in inet_stream_connect netfilter 1 1 2322d 2322d 0/29 auto-closed as invalid on 2019/09/08 01:40
upstream INFO: rcu detected stall in inet_stream_connect (4) net 1 1 270d 270d 0/29 auto-obsoleted due to no activity on 2025/01/20 17:38
android-5-15 BUG: soft lockup in inet_stream_connect 1 1 440d 440d 0/2 auto-obsoleted due to no activity on 2024/08/04 08:02

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P13590/2:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=83937, q=629 ncpus=2)
task:syz-executor.5  state:R  running task     stack:23696 pid:13590 tgid:13589 ppid:9708   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7068
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_done arch/x86/include/asm/unwind.h:50 [inline]
RIP: 0010:unwind_get_return_address+0x1f/0xc0 arch/x86/kernel/unwind_orc.c:366
Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 f4 c2 54 00 48 89 d8 <48> c1 e8 03 42 0f b6 04 30 84 c0 75 72 8b 2b 31 ff 89 ee e8 19 c7
RSP: 0018:ffffc90004a2edf8 EFLAGS: 00000287
RAX: ffffc90004a2ee20 RBX: ffffc90004a2ee20 RCX: 0000000000040000
RDX: ffffc90009f72000 RSI: 00000000000030c2 RDI: 00000000000030c3
RBP: ffffc90004a2eeb0 R08: ffffffff81416de5 R09: ffffffff814168df
R10: 0000000000000003 R11: ffff888029510000 R12: ffff888029510000
R13: ffffffff8181f000 R14: dffffc0000000000 R15: ffffc90004a2ee20
 arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 kmalloc_trace+0x1db/0x360 mm/slub.c:3997
 kmalloc include/linux/slab.h:628 [inline]
 kzalloc include/linux/slab.h:749 [inline]
 ref_tracker_alloc+0x14b/0x490 lib/ref_tracker.c:203
 __netdev_tracker_alloc include/linux/netdevice.h:4064 [inline]
 netdev_hold include/linux/netdevice.h:4093 [inline]
 ___neigh_create+0xc86/0x2470 net/core/neighbour.c:657
 ip6_finish_output2+0x1629/0x1670 net/ipv6/ip6_output.c:128
 ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:222
 NF_HOOK include/linux/netfilter.h:314 [inline]
 ip6_xmit+0xefe/0x17f0 net/ipv6/ip6_output.c:358
 inet6_csk_xmit+0x466/0x700 net/ipv6/inet6_connection_sock.c:135
 dccp_transmit_skb+0xf41/0x16a0 net/dccp/output.c:138
 dccp_connect+0x4fa/0x890 net/dccp/output.c:569
 dccp_v6_connect+0xd58/0x1480 net/dccp/ipv6.c:964
 __inet_stream_connect+0x264/0xf30 net/ipv4/af_inet.c:679
 inet_stream_connect+0x65/0xa0 net/ipv4/af_inet.c:750
 __sys_connect_file net/socket.c:2048 [inline]
 __sys_connect+0x2e1/0x310 net/socket.c:2065
 __do_sys_connect net/socket.c:2075 [inline]
 __se_sys_connect net/socket.c:2072 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2072
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d3347dca9
RSP: 002b:00007f2d341ea0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f2d335abf80 RCX: 00007f2d3347dca9
RDX: 000000000000001c RSI: 0000000020000140 RDI: 0000000000000008
RBP: 00007f2d334c947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2d335abf80 R15: 00007ffeb1036c08
 </TASK>
rcu: rcu_preempt kthread starved for 10558 jiffies! g83937 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R  running task     stack:26256 pid:16    tgid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2582
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
 kthread+0x2f2/0x390 kernel/kthread.c:388
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13624 Comm: syz-executor.3 Not tainted 6.9.0-rc6-syzkaller-00290-gb9158815de52 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:230 [inline]
RIP: 0010:__pvclock_clocksource_read arch/x86/kernel/pvclock.c:77 [inline]
RIP: 0010:pvclock_clocksource_read_nowd+0x4a/0xf0 arch/x86/kernel/pvclock.c:120
Code: 89 e1 48 d3 e3 4c 89 2c 24 48 89 d8 48 f7 24 24 48 0f ac d0 20 49 8b 4e 10 41 0f b6 56 1d 41 8b 36 39 ee 89 f5 74 5d 0f 01 f9 <66> 90 48 89 d3 48 c1 e3 20 48 09 c3 49 2b 5e 08 83 e5 fe 45 8b 6e
RSP: 0018:ffffc900020af5b8 EFLAGS: 00000086
RAX: 000000009bc03b10 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 00000000000001a3 RSI: 000000000003ffff RDI: ffffffff92928040
RBP: 0000000000000008 R08: ffffffff8135c721 R09: fffff52000415ee4
R10: dffffc0000000000 R11: fffff52000415ee4 R12: ffffc900020af680
R13: 1ffff92000415ecc R14: ffffffff92928040 R15: ffff8880628641c0
FS:  00007fc38a68b6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32e37000 CR3: 000000004cf58000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 kvm_sched_clock_read+0x11/0x20 arch/x86/kernel/kvmclock.c:91
 sched_clock+0x19/0x70 arch/x86/kernel/tsc.c:283
 sched_clock_cpu+0x76/0x490 kernel/sched/clock.c:394
 cpu_clock include/linux/sched/clock.h:93 [inline]
 psi_account_irqtime+0x93/0x5d0 kernel/sched/psi.c:1007
 update_rq_clock_task kernel/sched/core.c:726 [inline]
 update_rq_clock+0x22b/0x8a0 kernel/sched/core.c:770
 __schedule+0x432/0x4a50 kernel/sched/core.c:6659
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6838
 futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370
 __futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669
 futex_wait+0x101/0x360 kernel/futex/waitwake.c:697
 do_futex+0x33b/0x560 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc38987dca9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc38a68b178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fc3899ac058 RCX: 00007fc38987dca9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fc3899ac058
RBP: 00007fc3899ac050 R08: 00007fc38a68b6c0 R09: 00007fc38a68b6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc3899ac05c
R13: 000000000000006e R14: 00007ffccf06c9c0 R15: 00007ffccf06caa8
 </TASK>
sched: RT throttling activated

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/06 05:14 upstream b9158815de52 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: rcu detected stall in inet_stream_connect
* Struck through repros no longer work on HEAD.