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[syzbot] [mm?] INFO: rcu detected stall in kthreadd (2) | 0 (1) | 2024/10/30 03:07 |
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[syzbot] [mm?] INFO: rcu detected stall in kthreadd (2) | 0 (1) | 2024/10/30 03:07 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
linux-6.1 | INFO: rcu detected stall in kthreadd | 1 | 189d | 189d | 0/3 | auto-obsoleted due to no activity on 2024/08/23 07:20 | |||
upstream | INFO: rcu detected stall in kthreadd mm | 2 | 209d | 221d | 0/28 | auto-obsoleted due to no activity on 2024/07/25 04:06 | |||
android-5-15 | BUG: soft lockup in kthreadd origin:lts | C | 2 | 115d | 136d | 0/2 | auto-obsoleted due to no activity on 2024/11/05 13:04 |
sched: DL replenish lagged too much rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P2/1:b..l rcu: (detected by 0, t=10503 jiffies, g=7697, q=2518875 ncpus=2) task:kthreadd state:R running task stack:24560 pid:2 tgid:2 ppid:0 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5322 [inline] __schedule+0x1895/0x4b30 kernel/sched/core.c:6682 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7004 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:check_kcov_mode kernel/kcov.c:194 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:217 Code: 00 d8 03 00 65 8b 15 a0 f0 6e 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 <83> fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc RSP: 0018:ffffc900000775d0 EFLAGS: 00000246 RAX: ffffffff820b6c02 RBX: dffffc0000000000 RCX: ffff8881404a9e00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000040 RBP: dffffc0000000000 R08: ffffffff820b6bd8 R09: 1ffffffff2859900 R10: dffffc0000000000 R11: fffffbfff2859901 R12: ffff88801e1605d0 R13: 1ffffffff34887b4 R14: 0000000000000000 R15: 0000000000000000 __page_table_check_zero+0x102/0x350 mm/page_table_check.c:153 page_table_check_free include/linux/page_table_check.h:41 [inline] free_pages_prepare mm/page_alloc.c:1109 [inline] free_unref_page+0xd0f/0xf20 mm/page_alloc.c:2638 discard_slab mm/slub.c:2677 [inline] __put_partials+0xeb/0x130 mm/slub.c:3145 put_cpu_partial+0x17c/0x250 mm/slub.c:3220 __slab_free+0x2ea/0x3d0 mm/slub.c:4449 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x23/0xb0 mm/kasan/common.c:385 kasan_kmalloc include/linux/kasan.h:257 [inline] __do_kmalloc_node mm/slub.c:4264 [inline] __kmalloc_noprof+0x1fc/0x400 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] kzalloc_noprof include/linux/slab.h:1014 [inline] lsm_blob_alloc security/security.c:685 [inline] lsm_cred_alloc security/security.c:702 [inline] security_prepare_creds+0x53/0x360 security/security.c:3240 prepare_creds+0x467/0x640 kernel/cred.c:242 copy_creds+0x109/0x9c0 kernel/cred.c:312 copy_process+0x9df/0x3d50 kernel/fork.c:2237 kernel_clone+0x226/0x8f0 kernel/fork.c:2784 kernel_thread+0x1bc/0x240 kernel/fork.c:2846 create_kthread kernel/kthread.c:412 [inline] kthreadd+0x60d/0x810 kernel/kthread.c:767 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> rcu: rcu_preempt kthread starved for 9045 jiffies! g7697 f0x2 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:21840 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5322 [inline] __schedule+0x1895/0x4b30 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6774 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615 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> rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc2-syzkaller-00631-g6d858708d465 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:check_preemption_disabled+0x42/0x120 lib/smp_processor_id.c:55 Code: 08 65 8b 1d dc d2 3c 74 65 8b 05 d1 d2 3c 74 a9 ff ff ff 7f 74 26 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 ce 00 00 00 <89> d8 48 83 c4 10 5b 41 5c 41 5e 41 5f c3 cc cc cc cc 48 c7 04 24 RSP: 0018:ffffc900001e69e8 EFLAGS: 00000246 RAX: bcc40fbadd619200 RBX: 0000000000000001 RCX: ffffffff817056d4 RDX: 0000000000000000 RSI: ffffffff8c60fb00 RDI: ffffffff8c60fac0 RBP: ffffc900001e6b88 R08: ffffffff901d11af R09: 1ffffffff203a235 R10: dffffc0000000000 R11: fffffbfff203a236 R12: 1ffff9200003cd50 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8a4c39a4 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3e012ad198 CR3: 000000000e734000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <TASK> rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:737 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0xe3/0x550 kernel/locking/lockdep.c:5796 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] l3mdev_master_ifindex include/net/l3mdev.h:69 [inline] ip_route_me_harder+0x571/0x1360 net/ipv4/netfilter.c:49 synproxy_send_tcp+0x356/0x6c0 net/netfilter/nf_synproxy_core.c:431 synproxy_send_client_synack+0x8b8/0xf30 net/netfilter/nf_synproxy_core.c:484 nft_synproxy_eval_v4+0x3ca/0x610 net/netfilter/nft_synproxy.c:59 nft_synproxy_do_eval+0x362/0xa60 net/netfilter/nft_synproxy.c:141 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288 nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5668 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5781 process_backlog+0x662/0x15b0 net/core/dev.c:6113 __napi_poll+0xcb/0x490 net/core/dev.c:6834 napi_poll net/core/dev.c:6903 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7025 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:927 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164 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>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/10/26 02:48 | net-next | 6d858708d465 | 65e8686b | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: rcu detected stall in kthreadd | |
2024/11/17 03:48 | upstream | 4a5df3796467 | cfe3a04a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | INFO: rcu detected stall in kthreadd | ||
2024/11/16 14:20 | upstream | e8bdb3c8be08 | cfe3a04a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | INFO: rcu detected stall in kthreadd | ||
2024/11/13 15:26 | upstream | f1b785f4c787 | 62026c85 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/11/04 03:14 | upstream | b9021de3ec2f | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: rcu detected stall in kthreadd | ||
2024/11/03 02:43 | upstream | 11066801dd4b | f00eed24 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in kthreadd | ||
2024/10/18 21:34 | upstream | 4d939780b705 | cd6fc0a3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/10/07 00:15 | upstream | 8cf0b93919e1 | d7906eff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | INFO: rcu detected stall in kthreadd | ||
2024/10/06 06:38 | upstream | fc20a3e57247 | d7906eff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/10/05 04:44 | upstream | 27cc6fdf7201 | d7906eff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/09/27 21:39 | upstream | e477dba5442c | 2b1784d6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: rcu detected stall in kthreadd | ||
2024/09/17 14:05 | upstream | a430d95c5efa | c673ca06 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: rcu detected stall in kthreadd | ||
2024/09/06 22:20 | upstream | b831f83e40a2 | ce70880a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/08/20 03:21 | upstream | b0da640826ba | 9f0ab3fb | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/09/16 11:26 | upstream | 98f7e32f20d2 | 08d8a733 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-386 | INFO: rcu detected stall in kthreadd | ||
2024/11/20 19:19 | net-next | dd7207838d38 | 4fca1650 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/10/27 20:13 | net-next | 6d858708d465 | 65e8686b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/10/02 11:46 | net-next | 44badc908f2c | ea2b66a6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: rcu detected stall in kthreadd | ||
2024/09/28 07:12 | net-next | c824deb1a897 | 440b26ec | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: rcu detected stall in kthreadd |