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rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (10482 ticks this GP) idle=f114/1/0x4000000000000000 softirq=49988/49988 fqs=18 (t=10501 jiffies g=71565 q=163 ncpus=2) rcu: rcu_preempt kthread starved for 10412 jiffies! g71565 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:26712 pid:16 ppid:2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5241 [inline] __schedule+0x143f/0x4570 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </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: 11985 Comm: syz.4.2474 Not tainted 6.1.112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:deref_stack_reg+0x19d/0x210 arch/x86/kernel/unwind_orc.c:360 Code: c7 48 89 d3 e8 b4 07 00 00 49 89 c6 48 8b 6c 24 18 48 89 e8 48 c1 e8 03 80 3c 18 00 74 08 48 89 ef e8 c7 59 a5 00 4c 89 75 00 <b0> 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 44 89 f1 80 e1 RSP: 0018:ffffc900001e0388 EFLAGS: 00000246 RAX: 1ffff9200003c0a0 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffc9000baa0000 RDI: ffffc9000baa7a88 RBP: ffffc900001e0500 R08: ffffc9000baa7a88 R09: ffffc900001e0510 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200003c099 R13: 1ffff9200003c09a R14: 0000000000000000 R15: ffffc9000baa8000 FS: 00007fa0916f76c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3281cff8 CR3: 0000000057180000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <NMI> </NMI> <IRQ> unwind_next_frame+0x18db/0x2220 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674 skb_free_head net/core/skbuff.c:762 [inline] skb_release_data+0x5de/0x7a0 net/core/skbuff.c:791 skb_release_all net/core/skbuff.c:856 [inline] __kfree_skb+0x4c/0x60 net/core/skbuff.c:870 tcp_write_queue_purge+0x132/0x2f0 net/ipv4/tcp.c:3099 tcp_done_with_error+0x3d/0xc0 net/ipv4/tcp_input.c:4366 tcp_write_err net/ipv4/tcp_timer.c:70 [inline] tcp_write_timeout net/ipv4/tcp_timer.c:273 [inline] tcp_retransmit_timer+0x12ca/0x2800 net/ipv4/tcp_timer.c:547 tcp_write_timer+0x12e/0x280 net/ipv4/tcp_timer.c:676 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__sanitizer_cov_trace_pc+0x41/0x60 kernel/kcov.c:221 Code: 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 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 RSP: 0018:ffffc9000baa76f8 EFLAGS: 00000246 RAX: ffffffff8a9cc1cc RBX: ffff888062d46e00 RCX: ffff888025bd8000 RDX: ffffc9000d341000 RSI: 000000000000077e RDI: 000000000000077e RBP: 0000000000000003 R08: ffffffff8a9cc162 R09: ffffffff8a9cc024 R10: 0000000000000003 R11: ffff888025bd8000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88805ef6b80c R15: 000055558d1e4fff mtree_range_walk+0x55c/0x7c0 lib/maple_tree.c:2997 mas_state_walk lib/maple_tree.c:3900 [inline] mt_find+0x72b/0xc60 lib/maple_tree.c:6533 find_vma+0x136/0x1b0 mm/mmap.c:1887 lock_mm_and_find_vma+0x71/0x2e0 mm/memory.c:5385 do_user_addr_fault arch/x86/mm/fault.c:1312 [inline] handle_page_fault arch/x86/mm/fault.c:1431 [inline] exc_page_fault+0x169/0x620 arch/x86/mm/fault.c:1487 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:do_strncpy_from_user lib/strncpy_from_user.c:41 [inline] RIP: 0010:strncpy_from_user+0x159/0x360 lib/strncpy_from_user.c:139 Code: 26 fd 48 83 fd 07 0f 86 af 00 00 00 4c 89 64 24 08 4c 89 7c 24 10 48 c7 44 24 18 f8 ff ff ff 45 31 ed 4d 89 f4 48 8b 44 24 08 <4e> 8b 3c 28 48 b8 ff fe fe fe fe fe fe fe 49 8d 1c 07 4d 89 fe 49 RSP: 0018:ffffc9000baa7b48 EFLAGS: 00050246 RAX: 0000000000000000 RBX: 00007fffffffef81 RCX: ffff888025bd8000 RDX: ffffc9000d341000 RSI: 000000000000007f RDI: 0000000000000007 RBP: 000000000000007f R08: ffffffff84648031 R09: ffffffff81eed773 R10: 0000000000000003 R11: ffff888025bd8000 R12: ffffc9000baa7c70 R13: 0000000000000000 R14: ffffc9000baa7c70 R15: 000000000000007f strncpy_from_bpfptr include/linux/bpfptr.h:85 [inline] bpf_prog_load+0x188/0x1bb0 kernel/bpf/syscall.c:2530 __sys_bpf+0x382/0x6c0 kernel/bpf/syscall.c:5020 __do_sys_bpf kernel/bpf/syscall.c:5124 [inline] __se_sys_bpf kernel/bpf/syscall.c:5122 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5122 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa09097dff9 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:00007fa0916f7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fa090b36058 RCX: 00007fa09097dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00007fa0909f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa090b36058 R15: 00007fff9f59c338 </TASK> CPU: 0 PID: 11973 Comm: syz.1.2472 Not tainted 6.1.112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:deref_stack_reg+0x19d/0x210 arch/x86/kernel/unwind_orc.c:360 Code: c7 48 89 d3 e8 b4 07 00 00 49 89 c6 48 8b 6c 24 18 48 89 e8 48 c1 e8 03 80 3c 18 00 74 08 48 89 ef e8 c7 59 a5 00 4c 89 75 00 <b0> 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 44 89 f1 80 e1 RSP: 0018:ffffc90000007328 EFLAGS: 00000246 RAX: 1ffff92000000ea0 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffc90000000000 RDI: ffffc900000074b0 RBP: ffffc90000007500 R08: ffffc900000074b0 R09: ffffc90000007510 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000e99 R13: 1ffff92000000e9a R14: ffffc90000007550 R15: ffffc90000008000 FS: 00007f8fa71bd6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0c4fdff98 CR3: 00000000615d9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <IRQ> unwind_next_frame+0x18db/0x2220 __unwind_start+0x59d/0x720 arch/x86/kernel/unwind_orc.c:717 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x25c/0x3c0 mm/slub.c:3674 skb_free_head net/core/skbuff.c:762 [inline] skb_release_data+0x5de/0x7a0 net/core/skbuff.c:791 skb_release_all net/core/skbuff.c:856 [inline] __kfree_skb+0x4c/0x60 net/core/skbuff.c:870 tcp_write_queue_purge+0x132/0x2f0 net/ipv4/tcp.c:3099 tcp_done_with_error+0x3d/0xc0 net/ipv4/tcp_input.c:4366 tcp_write_err net/ipv4/tcp_timer.c:70 [inline] tcp_write_timeout net/ipv4/tcp_timer.c:273 [inline] tcp_retransmit_timer+0x12ca/0x2800 net/ipv4/tcp_timer.c:547 tcp_write_timer+0x12e/0x280 net/ipv4/tcp_timer.c:676 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1549 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:preempt_schedule_irq+0xf2/0x1c0 kernel/sched/core.c:6870 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 97 00 00 00 bf 01 00 00 00 e8 e9 22 af f6 e8 14 1f e2 f6 fb bf 01 00 00 00 <e8> 79 b4 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 d9 de 32 f7 48 RSP: 0018:ffffc9000b42f840 EFLAGS: 00000286 RAX: e1883ff2b5d20300 RBX: 1ffff92001685f10 RCX: ffffffff816af0fa RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: 0000000000000001 RBP: ffffc9000b42f8f0 R08: dffffc0000000000 R09: fffffbfff223ba45 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92001685f08 R13: 1ffff92001685f0c R14: ffffc9000b42f860 R15: dffffc0000000000 irqentry_exit+0x53/0x80 kernel/entry/common.c:439 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:_raw_spin_lock+0x0/0x40 kernel/locking/spinlock.c:153 Code: 36 77 b9 f6 48 83 c4 08 eb 0f 4c 89 f7 be 01 02 00 00 e8 53 24 a3 f6 31 ed 89 e8 5b 41 5e 5d c3 66 2e 0f 1f 84 00 00 00 00 00 <53> 48 89 fb bf 01 00 00 00 e8 02 6a ad f6 48 8d 7b 18 31 f6 31 d2 RSP: 0018:ffffc9000b42f9b8 EFLAGS: 00000282 RAX: 1ffff92001685f6c RBX: ffff888000000000 RCX: dffffc0000000000 RDX: ffffc90016974000 RSI: 0000000000000000 RDI: ffff888017c66060 RBP: ffffc9000b42fb60 R08: ffffffff81cc8fb6 R09: fffff9400002e081 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888017c66060 R13: 0000000017c67067 R14: 0000000017c67000 R15: ffff888017c67558 spin_lock include/linux/spinlock.h:351 [inline] __get_locked_pte+0x169/0x1c0 mm/memory.c:1850 get_locked_pte include/linux/mm.h:2221 [inline] __text_poke+0x280/0x9a0 arch/x86/kernel/alternative.c:1155 text_poke arch/x86/kernel/alternative.c:1240 [inline] text_poke_bp_batch+0x66b/0x940 arch/x86/kernel/alternative.c:1612 text_poke_flush arch/x86/kernel/alternative.c:1725 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1732 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 static_key_slow_inc_cpuslocked+0xaf/0x140 kernel/jump_label.c:165 static_key_slow_inc+0x16/0x30 kernel/jump_label.c:186 bpf_enable_runtime_stats kernel/bpf/syscall.c:4855 [inline] bpf_enable_stats+0xfe/0x140 kernel/bpf/syscall.c:4874 __sys_bpf+0x60a/0x6c0 kernel/bpf/syscall.c:5103 __do_sys_bpf kernel/bpf/syscall.c:5124 [inline] __se_sys_bpf kernel/bpf/syscall.c:5122 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5122 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8fa637dff9 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:00007f8fa71bd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f8fa6535f80 RCX: 00007f8fa637dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020 RBP: 00007f8fa63f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8fa6535f80 R15: 00007ffc93bb6c68 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/10/01 18:12 | linux-6.1.y | aa4cd140bba5 | ea2b66a6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/09/10 18:08 | linux-6.1.y | 5ca5b389fddf | 86aa7bd7 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/08/05 08:06 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/08/05 01:35 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/08/04 07:01 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/08/04 04:28 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/08/04 00:38 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/08/03 21:55 | linux-6.1.y | 48d525b0e463 | 1786a2a8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/07/18 09:06 | linux-6.1.y | cac15753b8ce | 0f902625 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | INFO: rcu detected stall in sys_bpf | ||
2024/06/27 10:39 | linux-6.1.y | eb44d83053d6 | 6ef39602 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/06/25 04:49 | linux-6.1.y | eb44d83053d6 | 215eef4a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | INFO: rcu detected stall in sys_bpf | ||
2024/05/19 08:59 | linux-6.1.y | 4078fa637fcd | c0f1611a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/05/19 05:53 | linux-6.1.y | 4078fa637fcd | c0f1611a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/04/20 10:26 | linux-6.1.y | 6741e066ec76 | af24b050 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in sys_bpf | ||
2024/07/31 07:20 | linux-6.1.y | c1cec4dad96b | 6fde257d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | INFO: rcu detected stall in sys_bpf |