syzbot


BUG: soft lockup in tcp_keepalive_timer

Status: premoderation: reported on 2024/04/11 08:13
Reported-by: syzbot+2a04b3d4a8f531b8b3ff@syzkaller.appspotmail.com
First crash: 99d, last: 31d

Sample crash report:
watchdog: BUG: soft lockup - CPU#0 stuck for 226s! [syz-executor.2:1835]
Modules linked in:
CPU: 0 PID: 1835 Comm: syz-executor.2 Tainted: G        W         5.15.149-syzkaller-00165-g85445b5a2107 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:121 [inline]
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:435 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x5cc/0xc40 kernel/locking/qspinlock.c:508
Code: c0 0f 85 48 01 00 00 48 8b 44 24 08 c6 00 01 bb 00 80 ff ff eb 06 f3 90 ff c3 74 5e 41 0f b6 44 15 00 84 c0 75 36 41 80 3f 00 <75> ea 4c 89 ff be 02 00 00 00 e8 d5 77 5d 00 48 ba 00 00 00 00 00
RSP: 0018:ffffc90000007b40 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 00000000ffff9a3a RCX: ffffffff8154fb7f
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff888118a3c4c8
RBP: ffffc90000007c30 R08: dffffc0000000000 R09: ffffed102314789a
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f7038ad4
R13: 1ffff11023147899 R14: 1ffff1103ee00001 R15: ffff888118a3c4c8
FS:  00007f0bedda36c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000786c6c257830 CR3: 0000000128e7c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock include/linux/spinlock.h:187 [inline]
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0x139/0x1b0 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:363 [inline]
 tcp_keepalive_timer+0x32/0xd30 net/ipv4/tcp_timer.c:703
 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1427
 expire_timers kernel/time/timer.c:1472 [inline]
 __run_timers+0x72a/0xa10 kernel/time/timer.c:1743
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1756
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 invoke_softirq kernel/softirq.c:425 [inline]
 __irq_exit_rcu+0x50/0xf0 kernel/softirq.c:648
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:660
 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x843/0x9b0 kernel/smp.c:969
Code: 45 8b 7d 00 44 89 fe 83 e6 01 31 ff e8 76 a8 0a 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 07 e8 b1 a4 0a 00 eb 38 f3 90 <42> 0f b6 04 3b 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 95 a4
RSP: 0018:ffffc90000af7200 EFLAGS: 00000246
RAX: ffffffff816592cb RBX: 1ffff1103ee2784d RCX: 0000000000040000
RDX: ffffc90001990000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90000af7308 R08: ffffffff8165929a R09: ffffed103ee071d3
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff8881f713c268 R14: ffff8881f7038e80 R15: dffffc0000000000
 on_each_cpu_cond_mask+0x40/0x80 kernel/smp.c:1135
 on_each_cpu include/linux/smp.h:71 [inline]
 flush_tlb_kernel_range+0x184/0x210 arch/x86/mm/tlb.c:1033
 __purge_vmap_area_lazy+0x230/0x1690 mm/vmalloc.c:1694
 _vm_unmap_aliases+0x339/0x3b0 mm/vmalloc.c:2118
 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:2141
 change_page_attr_set_clr+0x308/0x1050 arch/x86/mm/pat/set_memory.c:1740
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
 set_memory_ro+0xa1/0xe0 arch/x86/mm/pat/set_memory.c:1943
 bpf_jit_binary_lock_ro include/linux/filter.h:888 [inline]
 bpf_int_jit_compile+0xbf42/0xc6d0 arch/x86/net/bpf_jit_comp.c:2372
 bpf_prog_select_runtime+0x706/0x9e0 kernel/bpf/core.c:1930
 bpf_prog_load+0x1315/0x1b50 kernel/bpf/syscall.c:2337
 __sys_bpf+0x4bc/0x760 kernel/bpf/syscall.c:4633
 __do_sys_bpf kernel/bpf/syscall.c:4737 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4735 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:4735
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f0beea49f29
Code: 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 01 48
RSP: 002b:00007f0bedda30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f0beeb81050 RCX: 00007f0beea49f29
RDX: 0000000000000090 RSI: 0000000020000840 RDI: 0000000000000005
RBP: 00007f0beeab9074 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f0beeb81050 R15: 00007ffd8db49488
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 284 Comm: syz-fuzzer Tainted: G        W         5.15.149-syzkaller-00165-g85445b5a2107 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline]
RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline]
RIP: 0010:kvm_wait+0x117/0x180 arch/x86/kernel/kvm.c:912
Code: 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 53 41 0f b6 45 00 44 38 f0 0f 85 63 ff ff ff 66 90 0f 00 2d 7a 02 f3 03 f4 <e9> 54 ff ff ff fa 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b
RSP: 0018:ffffc900001cf4c0 EFLAGS: 00000046
RAX: 0000000000000003 RBX: 1ffff92000039e9c RCX: ffffffff8154fb7f
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881f7129a00
RBP: ffffc900001cf570 R08: dffffc0000000000 R09: ffffed103ee25341
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881f7129a00 R14: 0000000000000003 R15: 1ffff92000039ea0
FS:  000000c00005a090(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000786c6c257830 CR3: 000000011c7dc000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock_flags include/linux/spinlock.h:199 [inline]
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irqsave+0x1a0/0x210 kernel/locking/spinlock.c:162
 hrtimer_interrupt+0x111/0xaa0 kernel/time/hrtimer.c:1792
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0xfd/0x3c0 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x44/0xc0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:update_stack_state+0x3cc/0x460
Code: 39 06 74 0d 48 89 df e8 42 fc ff ff 49 89 c6 eb 19 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 c7 92 7d 00 4c 8b 33 <48> 8b 5d d0 48 83 c3 48 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08
RSP: 0018:ffffc900001cf970 EFLAGS: 00000246
RAX: 1ffff9200014ee73 RBX: ffffc90000a77398 RCX: 1ffff92000039f63
RDX: 1ffff92000039f5a RSI: ffffc90000a77390 RDI: ffffc900001cfb18
RBP: ffffc900001cfa28 R08: ffffc900001cfba8 R09: 0000000000000018
R10: ffffc900001cfbb0 R11: dffffc0000000001 R12: 1ffff92000039f60
R13: 0000000000000000 R14: ffffffffa00304e6 R15: dffffc0000000000
 unwind_next_frame+0x3cb/0x700 arch/x86/kernel/unwind_frame.c:305
 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:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 __kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:466
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3240 [inline]
 slab_alloc mm/slub.c:3248 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3253
 kmem_cache_alloc_node include/linux/slab.h:474 [inline]
 __alloc_skb+0xbe/0x550 net/core/skbuff.c:416
 alloc_skb include/linux/skbuff.h:1183 [inline]
 __tcp_send_ack+0x95/0x710 net/ipv4/tcp_output.c:3981
 tcp_send_ack+0x3b/0x60 net/ipv4/tcp_output.c:4013
 __tcp_ack_snd_check+0x3fc/0x970 net/ipv4/tcp_input.c:5521
 tcp_ack_snd_check net/ipv4/tcp_input.c:5567 [inline]
 tcp_rcv_established+0x9d6/0x1ac0 net/ipv4/tcp_input.c:5992
 tcp_v4_do_rcv+0x3d7/0xa00 net/ipv4/tcp_ipv4.c:1722
 tcp_v4_rcv+0x23dd/0x2a70 net/ipv4/tcp_ipv4.c:2125
 ip_protocol_deliver_rcu+0x32f/0x710 net/ipv4/ip_input.c:204
 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline]
 NF_HOOK include/linux/netfilter.h:305 [inline]
 ip_local_deliver+0x2c6/0x590 net/ipv4/ip_input.c:252
 dst_input include/net/dst.h:454 [inline]
 ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline]
 ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline]
 ip_sublist_rcv+0x7e2/0x980 net/ipv4/ip_input.c:636
 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671
 __netif_receive_skb_list_ptype net/core/dev.c:5535 [inline]
 __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5583
 __netif_receive_skb_list net/core/dev.c:5635 [inline]
 netif_receive_skb_list_internal+0x967/0xcc0 net/core/dev.c:5726
 gro_normal_list net/core/dev.c:5880 [inline]
 napi_complete_done+0x344/0x770 net/core/dev.c:6618
 virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
 virtnet_poll+0xbee/0x1260 drivers/net/virtio_net.c:1592
 __napi_poll+0xc4/0x5a0 net/core/dev.c:7042
 napi_poll net/core/dev.c:7109 [inline]
 net_rx_action+0x47d/0xc50 net/core/dev.c:7196
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565
 do_softirq+0xf6/0x150 kernel/softirq.c:452
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x75/0x80 kernel/softirq.c:379
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline]
 _raw_spin_unlock_bh+0x51/0x60 kernel/locking/spinlock.c:210
 sock_hash_delete_elem+0x2a2/0x2f0 net/core/sock_map.c:945
 bpf_prog_2c29ac5cdc6b1842+0x3a/0xb54
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
 __bpf_prog_run include/linux/filter.h:625 [inline]
 bpf_prog_run include/linux/filter.h:632 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline]
 bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1917
 __bpf_trace_hrtimer_start+0x23/0x30 include/trace/events/timer.h:199
 trace_hrtimer_start include/trace/events/timer.h:199 [inline]
 debug_activate kernel/time/hrtimer.c:476 [inline]
 enqueue_hrtimer+0x1e7/0x240 kernel/time/hrtimer.c:1084
 __hrtimer_start_range_ns kernel/time/hrtimer.c:1258 [inline]
 hrtimer_start_range_ns+0x9f4/0xb80 kernel/time/hrtimer.c:1298
 hrtimer_start_expires include/linux/hrtimer.h:435 [inline]
 hrtimer_sleeper_start_expires+0x67/0x70 kernel/time/hrtimer.c:1965
 futex_wait_queue_me+0x231/0x760 kernel/futex/core.c:2858
 futex_wait+0x2e6/0x9a0 kernel/futex/core.c:2975
 do_futex+0x1367/0x37f0 kernel/futex/core.c:3995
 __do_sys_futex kernel/futex/core.c:4072 [inline]
 __se_sys_futex+0x37b/0x3e0 kernel/futex/core.c:4053
 __x64_sys_futex+0xe5/0x100 kernel/futex/core.c:4053
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x473523
Code: 24 20 c3 cc cc cc cc 48 8b 7c 24 08 8b 74 24 10 8b 54 24 14 4c 8b 54 24 18 4c 8b 44 24 20 44 8b 4c 24 28 b8 ca 00 00 00 0f 05 <89> 44 24 30 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 002b:000000c00006be80 EFLAGS: 00000206 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000473523
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000025c2800
RBP: 000000c00006bec8 R08: 0000000000000000 R09: 0000000000000000
R10: 000000c00006beb8 R11: 0000000000000206 R12: 000000c00006beb8
R13: 000000c000573000 R14: 000000c0000064e0 R15: 0000000000000002
 </TASK>

Crashes (12):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/18 02:14 android13-5.15-lts 85445b5a2107 ce6011bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/06/15 06:14 android13-5.15-lts 85445b5a2107 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in tcp_keepalive_timer
2024/06/11 00:13 android13-5.15-lts 79bd336c7a94 048c640a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/06/03 21:47 android13-5.15-lts 79bd336c7a94 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/05/18 19:55 android13-5.15-lts 5d96939590c0 c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/05/04 23:38 android13-5.15-lts 5d96939590c0 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/05/02 20:51 android13-5.15-lts 5d96939590c0 ddfc15a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/04/28 20:40 android13-5.15-lts 5d96939590c0 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/04/24 18:01 android13-5.15-lts ad06eaf051cd 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in tcp_keepalive_timer
2024/04/22 04:52 android13-5.15-lts ad06eaf051cd af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/04/20 04:52 android13-5.15-lts ad06eaf051cd af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15-perf BUG: soft lockup in tcp_keepalive_timer
2024/04/11 08:12 android13-5.15-lts 993bed180178 33b9e058 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: soft lockup in tcp_keepalive_timer
* Struck through repros no longer work on HEAD.