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rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2719 jiffies s: 57825 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9225 Comm: syz.9.1357 Not tainted 6.1.126-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:check_preemption_disabled+0x4b/0x110 lib/smp_processor_id.c:55 Code: 8b 05 21 91 4f 75 a9 ff ff ff 7f 74 22 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 c7 00 00 00 89 d8 48 83 c4 10 5b 41 5c <41> 5e 41 5f c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 RSP: 0018:ffffc900001dffc8 EFLAGS: 00000086 RAX: 0000000000000001 RBX: ffffc900001e0040 RCX: ffffffff816b5ea2 RDX: dffffc0000000000 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5e67c0 RBP: ffffc900001e0128 R08: dffffc0000000000 R09: fffffbfff2249c4e R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200003c004 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000046 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555908b65c8 CR3: 00000000250b6000 CR4: 00000000003506e0 DR0: 0000000020000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <NMI> </NMI> <IRQ> lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline] lock_acquire+0x208/0x5a0 kernel/locking/lockdep.c:5664 seqcount_lockdep_reader_access+0xf8/0x220 include/linux/seqlock.h:102 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline] timekeeping_get_ns kernel/time/timekeeping.c:388 [inline] ktime_get+0x7f/0x270 kernel/time/timekeeping.c:848 hrtimer_forward_now include/linux/hrtimer.h:508 [inline] perf_swevent_hrtimer+0x43b/0x4f0 kernel/events/core.c:10885 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline] __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:memset+0x1/0x40 mm/kasan/shadow.c:43 Code: 8c ce 08 31 db eb d7 cc cc 89 f6 48 8b 0c 24 31 d2 e9 d3 ec ff ff 0f 1f 00 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 c0 ec ff ff 55 <41> 56 53 48 89 d3 41 89 f6 48 89 fd 48 8b 4c 24 18 48 89 d6 ba 01 RSP: 0018:ffffc900001e0808 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880242a6c00 RCX: ffffffff88a00b2b RDX: 0000000000000020 RSI: 0000000000000000 RDI: ffff8880242a6cc0 RBP: 00000000000000c0 R08: dffffc0000000000 R09: ffffed100fe881d5 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100fe881d1 R13: ffff88807f440dc0 R14: dffffc0000000000 R15: 1ffff1100fe881d2 __build_skb_around net/core/skbuff.c:293 [inline] __alloc_skb+0x383/0x670 net/core/skbuff.c:530 skb_copy+0x127/0x820 net/core/skbuff.c:1732 mac80211_hwsim_tx_frame_no_nl+0x10f4/0x1a70 drivers/net/wireless/mac80211_hwsim.c:1724 mac80211_hwsim_tx_frame+0x1cc/0x220 drivers/net/wireless/mac80211_hwsim.c:2053 mac80211_hwsim_beacon_tx+0x5f8/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2116 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1770 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 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 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 19 1b a3 f6 e8 84 e9 d5 f6 fb bf 01 00 00 00 <e8> 79 b4 ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 29 bc 26 f7 48 RSP: 0018:ffffc900050c70c0 EFLAGS: 00000282 RAX: 2fc84f4049fe7800 RBX: 1ffff92000a18e20 RCX: ffffffff816b126a RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: 0000000000000001 RBP: ffffc900050c7170 R08: dffffc0000000000 R09: fffffbfff2249c53 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000a18e18 R13: 1ffff92000a18e1c R14: ffffc900050c70e0 R15: dffffc0000000000 irqentry_exit+0x53/0x80 kernel/entry/common.c:439 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:kasan_check_range+0x6/0x290 mm/kasan/generic.c:188 Code: e8 2f 55 d1 08 31 c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 41 57 41 56 53 <b0> 01 48 85 f6 0f 84 9a 01 00 00 48 89 fd 48 01 f5 0f 82 5a 02 00 RSP: 0018:ffffc900050c7238 EFLAGS: 00000246 RAX: ffffffff81d91ec1 RBX: ffffea0001926500 RCX: ffffffff81d91ed2 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0001926500 RBP: dffffc0000000000 R08: ffffffff81d91ead R09: fffff94000324ca9 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001926508 R13: 1ffffd4000324ca1 R14: 00000000000001fe R15: 0000000000000fe8 instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] folio_test_swapbacked include/linux/page-flags.h:502 [inline] folio_test_swapcache include/linux/page-flags.h:543 [inline] free_swap_cache+0xc2/0x650 mm/swap_state.c:284 free_pages_and_swap_cache+0x5e/0x90 mm/swap_state.c:313 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261 zap_pte_range mm/memory.c:1525 [inline] zap_pmd_range mm/memory.c:1574 [inline] zap_pud_range mm/memory.c:1603 [inline] zap_p4d_range mm/memory.c:1624 [inline] unmap_page_range+0x217c/0x2740 mm/memory.c:1645 unmap_vmas+0x48b/0x640 mm/memory.c:1730 exit_mmap+0x249/0x980 mm/mmap.c:3238 __mmput+0x115/0x3c0 kernel/fork.c:1200 exit_mm+0x226/0x300 kernel/exit.c:565 do_exit+0x9f1/0x26a0 kernel/exit.c:858 do_group_exit+0x202/0x2b0 kernel/exit.c:1021 get_signal+0x16f7/0x17d0 kernel/signal.c:2871 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa9cbb85d29 Code: Unable to access opcode bytes at 0x7fa9cbb85cff. RSP: 002b:00007fa9cc9e10e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007fa9cbd75fa8 RCX: 00007fa9cbb85d29 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fa9cbd75fac RBP: 00007fa9cbd75fa0 R08: 0000000000000010 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fa9cbd75fac R13: 0000000000000000 R14: 00007ffda59aa9c0 R15: 00007ffda59aaaa8 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/01/23 16:42 | linux-6.1.y | f4f677285b38 | a44b0418 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-perf | INFO: rcu detected stall in mac80211_hwsim_beacon |