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INFO: rcu detected stall in sock_recvmsg_nosec

Status: auto-obsoleted due to no activity on 2025/04/09 18:08
Subsystems: net
[Documentation on labels]
First crash: 228d, last: 228d

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=f914/1/0x4000000000000000 softirq=83931/83931 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=73889, q=2146 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 20684 Comm: syz.1.3683 Not tainted 6.13.0-rc6-syzkaller-00051-geea6e4b4dfb8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:_raw_spin_lock_irq+0x108/0x120 kernel/locking/spinlock.c:171
Code: f5 48 c7 04 24 0e 36 e0 45 4b c7 04 2f 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 44 24 40 75 13 48 8d 65 d8 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 cc cc cc cc e8 89 3e fd ff 66 0f 1f 84 00 00 00
RSP: 0018:ffffc90000a18d20 EFLAGS: 00000046
RAX: b1984b2fe7f6b700 RBX: ffff8880b872c9c8 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000a18c20
RBP: ffffc90000a18d30 R08: 0000000000000003 R09: fffff52000143184
R10: dffffc0000000000 R11: fffff52000143184 R12: 1ffff110170e593b
R13: 0000000000000001 R14: ffffc90000a18cc0 R15: dffffc0000000000
FS:  00007ff4f4e676c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555566864808 CR3: 000000004c4a0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 00000000872c9164 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __run_hrtimer kernel/time/hrtimer.c:1743 [inline]
 __hrtimer_run_queues+0x670/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:sock_recvmsg_nosec+0x34/0x1d0 net/socket.c:1033
Code: 50 89 54 24 04 49 89 f4 49 89 ff 49 bd 00 00 00 00 00 fc ff df e8 8c 30 1e f8 4d 8d 77 20 4c 89 f3 48 c1 eb 03 42 80 3c 2b 00 <74> 08 4c 89 f7 e8 12 09 82 f8 bd 90 00 00 00 49 03 2e 48 89 e8 48
RSP: 0018:ffffc90003ee78c0 EFLAGS: 00000246
RAX: ffffffff89814344 RBX: 1ffff11004c0d304 RCX: 0000000000080000
RDX: ffffc9000d80b000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90003ee7a70 R08: ffffffff8981e179 R09: 0000000000000000
R10: ffffc90003ee7980 R11: fffff520007dcf40 R12: ffffc90003ee7d00
R13: dffffc0000000000 R14: ffff888026069820 R15: ffff888026069800
 ____sys_recvmsg+0x3cd/0x480 net/socket.c:2801
 ___sys_recvmsg net/socket.c:2845 [inline]
 do_recvmmsg+0x426/0xab0 net/socket.c:2940
 __sys_recvmmsg net/socket.c:3014 [inline]
 __do_sys_recvmmsg net/socket.c:3037 [inline]
 __se_sys_recvmmsg net/socket.c:3030 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3030
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff4f3f85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff4f4e67038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007ff4f4176080 RCX: 00007ff4f3f85d29
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007ff4f4001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff4f4176080 R15: 00007ffd3bd6e8f8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g73889 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=103361
rcu: rcu_preempt kthread starved for 10502 jiffies! g73889 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26264 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/09 18:00 upstream eea6e4b4dfb8 40f46913 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: rcu detected stall in sock_recvmsg_nosec
* Struck through repros no longer work on HEAD.