syzbot

rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (949 ticks this GP) idle=ba3/1/0x4000000000000000 softirq=100919/100919 fqs=3 
	(t=10500 jiffies g=145697 q=1436)
rcu: rcu_preempt kthread starved for 10494 jiffies! g145697 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:26400 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
 schedule+0x11b/0x1f0 kernel/sched/core.c:6456
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24479 Comm: syz.0.7292 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__lock_acquire+0x43b/0x1ff0 kernel/locking/lockdep.c:4955
Code: 03 c1 e6 10 09 c6 8b 44 24 2c 83 e0 01 c1 e0 12 31 c9 83 7c 24 70 00 0f 95 c1 c1 e1 13 41 c1 e7 14 41 09 cf 41 09 c7 41 09 f7 <41> 0f b6 04 16 84 c0 4c 89 ed 0f 85 31 13 00 00 44 8b b4 24 d8 00
RSP: 0018:ffffc900000068c0 EFLAGS: 00000002
RAX: 0000000000040000 RBX: 0000000000006045 RCX: 0000000000080000
RDX: dffffc0000000000 RSI: 0000000000026045 RDI: ffff888068c3a894
RBP: ffff888068c39dc0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000045
R13: 000000000000000a R14: 1ffff1100d187524 R15: 00000000000e6045
FS:  00007f36ebffd6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d118ff8 CR3: 000000003da77000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 seqcount_lockdep_reader_access+0xf8/0x220 include/linux/seqlock.h:103
 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:831
 hrtimer_forward_now include/linux/hrtimer.h:508 [inline]
 perf_swevent_hrtimer+0x4aa/0x560 kernel/events/core.c:10887
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_count_sub+0x3/0x160 kernel/sched/core.c:5509
Code: c1 48 94 e9 8d 80 e1 07 80 c1 03 38 c1 7c 80 48 c7 c7 48 94 e9 8d e8 4c b7 72 00 e9 6f ff ff ff 0f 1f 80 00 00 00 00 41 56 53 <89> fb 48 c7 c0 c0 8f 86 96 48 c1 e8 03 49 be 00 00 00 00 00 fc ff
RSP: 0018:ffffc90000007190 EFLAGS: 00000202
RAX: ffffc90003568000 RBX: ffffc90000007270 RCX: ffffc900035677e8
RDX: dffffc0000000000 RSI: ffffc900035677d0 RDI: 0000000000000001
RBP: ffffc900035677e0 R08: ffffc900035677d0 R09: ffffc900000072b0
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1cc245a
R13: 1ffffffff1cc245a R14: ffffc90003560000 R15: ffffc90000007260
 unwind_next_frame+0x1437/0x1fa0 arch/x86/kernel/unwind_orc.c:616
 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+0x4b/0x80 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0xf1/0x270 mm/slub.c:4559
 skb_free_head net/core/skbuff.c:655 [inline]
 skb_release_data+0x73a/0x8a0 net/core/skbuff.c:677
 skb_release_all net/core/skbuff.c:742 [inline]
 __kfree_skb net/core/skbuff.c:756 [inline]
 kfree_skb_reason+0xb3/0x170 net/core/skbuff.c:776
 kfree_skb include/linux/skbuff.h:1123 [inline]
 __netif_receive_skb_core+0x3881/0x3df0 net/core/dev.c:5459
 __netif_receive_skb_one_core net/core/dev.c:5483 [inline]
 __netif_receive_skb+0x11c/0x530 net/core/dev.c:5599
 process_backlog+0x363/0x7f0 net/core/dev.c:6476
 __napi_poll+0xc7/0x440 net/core/dev.c:7035
 napi_poll net/core/dev.c:7102 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7192
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:BPF_PROG_RUN_ARRAY include/linux/bpf.h:1339 [inline]
RIP: 0010:trace_call_bpf+0x30e/0x660 kernel/trace/bpf_trace.c:127
Code: 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 48 8b 5c 24 58 74 08 4c 89 ff e8 38 0c 40 00 45 21 e5 4c 8b 33 <4d> 85 f6 0f 84 f8 00 00 00 e8 04 42 f6 ff 49 83 c7 18 48 83 c3 18
RSP: 0018:ffffc90003567340 EFLAGS: 00000246
RAX: 1ffff110063dfd05 RBX: ffff888031efe828 RCX: dffffc0000000000
RDX: ffffc900164ad000 RSI: 00000000000011d0 RDI: 00000000000011d1
RBP: ffffc90003567458 R08: ffffffff818a1705 R09: fffffbfff20e2419
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888031efe828
 perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9987
 perf_trace_lock_acquire+0x3bf/0x4a0 include/trace/events/lock.h:13
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x4c6/0x4f0 kernel/locking/lockdep.c:5594
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
 rcu_read_lock include/linux/rcupdate.h:739 [inline]
 is_bpf_text_address+0x1d/0x260 kernel/bpf/core.c:721
 kernel_text_address kernel/extable.c:151 [inline]
 __kernel_text_address+0x94/0x100 kernel/extable.c:105
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
 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:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x53/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3220 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233
 sk_prot_alloc+0x58/0x200 net/core/sock.c:1857
 sk_alloc+0x35/0x310 net/core/sock.c:1916
 unix_create1+0xb4/0x640
 unix_create+0x146/0x1f0 net/unix/af_unix.c:918
 __sock_create+0x460/0x8d0 net/socket.c:1486
 sock_create net/socket.c:1537 [inline]
 __sys_socketpair+0x2c1/0x700 net/socket.c:1637
 __do_sys_socketpair net/socket.c:1690 [inline]
 __se_sys_socketpair net/socket.c:1687 [inline]
 __x64_sys_socketpair+0x97/0xb0 net/socket.c:1687
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f36edb84ff9
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:00007f36ebffd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f36edd3cf80 RCX: 00007f36edb84ff9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007f36edbf7296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f36edd3cf80 R15: 00007ffe09992498
 </TASK>
NMI backtrace for cpu 1
CPU: 1 PID: 24473 Comm: syz.3.7295 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x320/0x600 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq+0x8d9/0x1150 kernel/rcu/tree.c:2619
 update_process_times+0x196/0x200 kernel/time/timer.c:1818
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 f2 3e 8c f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 87 87 19 f7 65 8b 05 08 8a c4 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90000dd0900 EFLAGS: 00000206
RAX: d1e6d720de944200 RBX: 1ffff920001ba124 RCX: ffffffff81631ae8
RDX: dffffc0000000000 RSI: ffffffff8a8b2b00 RDI: 0000000000000001
RBP: ffffc90000dd0988 R08: dffffc0000000000 R09: fffffbfff20e242e
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920001ba120 R14: ffffc90000dd0920 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
 kcov_remote_start+0xf2/0x480 kernel/kcov.c:861
 kcov_remote_start_common include/linux/kcov.h:50 [inline]
 ieee80211_rx_list+0x5cc/0x2a60 net/mac80211/rx.c:4964
 ieee80211_rx_napi+0x15f/0x380 net/mac80211/rx.c:5005
 ieee80211_rx include/net/mac80211.h:4571 [inline]
 ieee80211_handle_queued_frames+0x103/0x1b0 net/mac80211/main.c:235
 tasklet_action_common+0x3cb/0x4a0
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5627
Code: 2b 00 74 08 4c 89 f7 e8 0c 75 67 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90003e97120 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920007d2e30 RCX: 1ffff920007d2dd0
RDX: dffffc0000000000 RSI: ffffffff8a8b3da0 RDI: ffffffff8ad904c0
RBP: ffffc90003e97280 R08: dffffc0000000000 R09: fffffbfff20e2419
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920007d2e2c
R13: dffffc0000000000 R14: ffffc90003e97180 R15: 0000000000000246
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:312
 rcu_read_lock include/linux/rcupdate.h:739 [inline]
 BPF_PROG_RUN_ARRAY include/linux/bpf.h:1333 [inline]
 trace_call_bpf+0x146/0x660 kernel/trace/bpf_trace.c:127
 perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9987
 perf_trace_lock_acquire+0x3bf/0x4a0 include/trace/events/lock.h:13
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x4c6/0x4f0 kernel/locking/lockdep.c:5594
 __might_fault+0xb4/0x110 mm/memory.c:5327
 __receive_fd+0xd1/0x190 fs/file.c:1221
 receive_fd_user include/linux/file.h:105 [inline]
 scm_detach_fds+0x21e/0x6a0 net/core/scm.c:324
 scm_recv+0x512/0x720 include/net/scm.h:151
 __unix_dgram_recvmsg+0xca6/0x1260 net/unix/af_unix.c:2381
 ____sys_recvmsg+0x286/0x530
 ___sys_recvmsg+0x1ec/0x690 net/socket.c:2692
 __sys_recvmsg net/socket.c:2722 [inline]
 __do_sys_recvmsg net/socket.c:2732 [inline]
 __se_sys_recvmsg net/socket.c:2729 [inline]
 __x64_sys_recvmsg+0x1dc/0x2b0 net/socket.c:2729
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7f7d03fff9
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:00007f7f7b4b8038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f7f7d1f7f80 RCX: 00007f7f7d03fff9
RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 00000000000000bf
RBP: 00007f7f7d0b2296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7f7d1f7f80 R15: 00007ffd25e48698
 </TASK>