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[syzbot] [kernel?] INFO: rcu detected stall in rt_sigreturn | 0 (2) | 2024/10/04 20:32 |
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[syzbot] [kernel?] INFO: rcu detected stall in rt_sigreturn | 0 (2) | 2024/10/04 20:32 |
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5586/1:b..l rcu: (detected by 0, t=10503 jiffies, g=15021, q=836 ncpus=2) task:syz-executor.2 state:R running task stack:20288 pid:5586 tgid:5586 ppid:5548 flags:0x00004002 Call Trace: <TASK> context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6924 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6948 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 vprintk_emit+0x690/0x770 kernel/printk/printk.c:2346 _printk+0xd5/0x120 kernel/printk/printk.c:2370 batadv_check_known_mac_addr+0x2bd/0x410 net/batman-adv/hard-interface.c:528 batadv_hard_if_event+0x3a5/0x1620 net/batman-adv/hard-interface.c:998 notifier_call_chain+0x1a1/0x3e0 kernel/notifier.c:93 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline] call_netdevice_notifiers net/core/dev.c:2044 [inline] dev_set_mac_address+0x3d9/0x510 net/core/dev.c:9044 dev_set_mac_address_user+0x31/0x50 net/core/dev.c:9058 do_setlink+0x8b3/0x41f0 net/core/rtnetlink.c:2855 __rtnl_newlink net/core/rtnetlink.c:3696 [inline] rtnl_newlink+0x180b/0x20a0 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x89d/0x1180 net/core/rtnetlink.c:6635 netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2564 netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline] netlink_unicast+0x7ec/0x980 net/netlink/af_netlink.c:1361 netlink_sendmsg+0x8db/0xcb0 net/netlink/af_netlink.c:1905 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x223/0x270 net/socket.c:745 __sys_sendto+0x3a4/0x4f0 net/socket.c:2192 __do_sys_sendto net/socket.c:2204 [inline] __se_sys_sendto net/socket.c:2200 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2200 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: 0033:0x7fdd0787ed9c RSP: 002b:00007ffefd40ed20 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fdd084e4620 RCX: 00007fdd0787ed9c RDX: 000000000000002c RSI: 00007fdd084e4670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffefd40ed74 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fdd084e4670 R15: 0000000000000000 </TASK> rcu: rcu_preempt kthread starved for 10555 jiffies! g15021 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:26448 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202 kthread+0x2f2/0x390 kernel/kthread.c:389 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: 5933 Comm: syz-executor.3 Not tainted 6.10.0-rc4-syzkaller-00301-g5f583a3162ff #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline] RIP: 0010:kvm_wait+0x2ac/0x2c0 arch/x86/kernel/kvm.c:1060 Code: a0 48 89 df e8 25 8a bb 00 eb 96 e8 7e 8d 45 0a f3 0f 1e fa e8 75 dd 55 00 f4 e9 04 fe ff ff f3 0f 1e fa e8 66 dd 55 00 fb f4 <e9> f4 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 RSP: 0018:ffffc90000a18620 EFLAGS: 00000246 RAX: ffffffff8140482a RBX: ffff8880b953f614 RCX: ffff88801b7fbc00 RDX: 0000000000000101 RSI: ffffffff8bcabb80 RDI: ffffffff8c1feb80 RBP: ffffc90000a186f0 R08: ffffffff92fa75ef R09: 1ffffffff25f4ebd R10: dffffc0000000000 R11: fffffbfff25f4ebe R12: 1ffff920001430c8 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000001 FS: 00007f15d11736c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f15d1193f80 CR3: 0000000066660000 CR4: 0000000000350ef0 Call Trace: <NMI> </NMI> <IRQ> pv_wait arch/x86/include/asm/paravirt.h:596 [inline] pv_wait_node kernel/locking/qspinlock_paravirt.h:322 [inline] __pv_queued_spin_lock_slowpath+0x4a6/0xdc0 kernel/locking/qspinlock.c:473 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116 spin_lock include/linux/spinlock.h:351 [inline] mac80211_hwsim_tx_frame_no_nl+0x97f/0x18d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1808 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/virtual/mac80211_hwsim.c:2206 mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2306 __iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:772 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2336 __run_hrtimer kernel/time/hrtimer.c:1687 [inline] __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1751 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1768 handle_softirqs+0x2c6/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 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:lock_release+0x630/0x9f0 kernel/locking/lockdep.c:5778 Code: 3c 3b 00 74 08 4c 89 f7 e8 1d 41 89 00 f6 84 24 91 00 00 00 02 75 77 41 f7 c5 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 27 00 00 00 00 4b c7 44 27 08 00 00 00 00 65 48 8b 04 25 RSP: 0018:ffffc9000565f940 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000acbf3a RCX: ffffc9000565f903 RDX: 0000000000000000 RSI: ffffffff8bcacd00 RDI: ffffffff8c1feb80 RBP: ffffc9000565fa70 R08: ffffffff8fad4cef R09: 1ffffffff1f5a99d R10: dffffc0000000000 R11: fffffbfff1f5a99e R12: 1ffff92000acbf34 R13: 0000000000000246 R14: ffffc9000565f9d0 R15: dffffc0000000000 __copy_from_user include/linux/uaccess.h:97 [inline] check_xstate_in_sigframe arch/x86/kernel/fpu/signal.c:35 [inline] __fpu_restore_sig arch/x86/kernel/fpu/signal.c:348 [inline] fpu__restore_sig+0x1a1/0x11b0 arch/x86/kernel/fpu/signal.c:493 restore_sigcontext+0x675/0x7d0 arch/x86/kernel/signal_64.c:95 __do_sys_rt_sigreturn+0x17f/0x270 arch/x86/kernel/signal_64.c:263 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: 0033:0x7f15d047d0a7 Code: 14 25 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 RSP: 002b:00007f15d1173178 EFLAGS: 00000246 RAX: 00000000000000ca RBX: 00007f15d05b4398 RCX: 00007f15d047d0a9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f15d05b4398 RBP: 00007f15d05b4390 R08: 00007f15d11736c0 R09: 00007f15d11736c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f15d05b439c R13: 000000000000006e R14: 00007ffd15f09fc0 R15: 00007ffd15f0a0a8 </TASK> sched: RT throttling activated
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/06/23 16:26 | upstream | 5f583a3162ff | edc5149a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | INFO: rcu detected stall in rt_sigreturn | ||
2024/04/22 06:57 | upstream | 48cf398f15fc | af24b050 | .config | console log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: rcu detected stall in rt_sigreturn | |
2024/06/16 16:05 | linux-next | a957267fa7e9 | f429ab00 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | INFO: rcu detected stall in rt_sigreturn |