rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=c73/1/0x4000000000000000 softirq=280868/280869 fqs=16
(t=10500 jiffies g=496053 q=1015)
rcu: rcu_preempt kthread starved for 10172 jiffies! g496053 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:26576 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
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: 24994 Comm: syz-executor.5 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3694 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3714 [inline]
RIP: 0010:validate_chain+0x181/0x8240 kernel/locking/lockdep.c:3769
Code: b8 eb 83 b5 80 46 86 c8 61 49 0f af c6 48 c1 e8 30 48 8d 1c c5 e0 9b a9 8f 48 89 d8 48 c1 e8 03 48 89 44 24 40 42 80 3c 20 00 <74> 08 48 89 df e8 e5 86 69 00 48 89 5c 24 20 48 8b 1b 48 85 db 74
RSP: 0018:ffffc90000dbf6e0 EFLAGS: 00000046
RAX: 1ffffffff1f62d96 RBX: ffffffff8fb16cb0 RCX: ffffffff81669b28
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ff8dee8
RBP: ffffc90000dbf9f0 R08: dffffc0000000000 R09: fffffbfff1ff1bde
R10: fffffbfff1ff1bde R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff920001b7efc R14: 19608bbb5a9b11f5 R15: 19608bbb5a9b11f5
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555690f848 CR3: 00000000374a7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__lock_acquire+0x1382/0x2b00 kernel/locking/lockdep.c:5027
lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5637
seqcount_lockdep_reader_access+0xfe/0x230 include/linux/seqlock.h:103
ktime_get_update_offsets_now+0x45/0x460 kernel/time/timekeeping.c:2297
hrtimer_update_base kernel/time/hrtimer.c:631 [inline]
hrtimer_interrupt+0x143/0x1040 kernel/time/hrtimer.c:1793
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_release+0x592/0x810 kernel/locking/lockdep.c:5661
Code: 3c 23 00 74 08 4c 89 f7 e8 cb 35 6a 00 f6 84 24 91 00 00 00 02 75 68 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2c 00 00 00 00 4b c7 44 2c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90000dc0040 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920001b801a RCX: dffffc0000000000
RDX: 1ffff920001b8018 RSI: 0000000000000302 RDI: 0000000000000000
RBP: ffffc90000dc0178 R08: dffffc0000000000 R09: fffffbfff1bfcce6
R10: fffffbfff1bfcce6 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff920001b8014 R14: ffffc90000dc00d0 R15: 0000000000000246
rcu_read_unlock include/linux/rcupdate.h:721 [inline]
is_bpf_text_address+0x253/0x270 kernel/bpf/core.c:717
kernel_text_address+0x9e/0xd0 kernel/extable.c:124
__kernel_text_address+0x9/0x40 kernel/extable.c:78
unwind_get_return_address+0x48/0x80 arch/x86/kernel/unwind_orc.c:318
arch_stack_walk+0xf8/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4c/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x10d/0x150 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kmem_cache_free+0x95/0x190 mm/slub.c:3529
kfree_skb_list+0x41/0x70 net/core/skbuff.c:783
__dev_xmit_skb net/core/dev.c:3881 [inline]
__dev_queue_xmit+0x2296/0x35c0 net/core/dev.c:4194
hsr_xmit net/hsr/hsr_forward.c:381 [inline]
hsr_forward_do net/hsr/hsr_forward.c:472 [inline]
hsr_forward_skb+0x1225/0x1ff0 net/hsr/hsr_forward.c:620
hsr_announce+0x15b/0x2d0 net/hsr/hsr_device.c:382
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_is_held_type+0x143/0x190
Code: 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 3c 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc900041bf198 EFLAGS: 00000206
RAX: 68332deb36160100 RBX: 0000000000000000 RCX: 0000000080000002
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff1bfcce6
R10: fffffbfff1bfcce6 R11: 0000000000000000 R12: 0000000000000246
R13: ffff88803e4c9d00 R14: 00000000ffffffff R15: ffffffff8cb1d8a0
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
trace_lock_release+0x4f/0x150 include/trace/events/lock.h:58
lock_release+0x82/0x810 kernel/locking/lockdep.c:5648
zap_pte_range+0xa25/0x1ba0 mm/memory.c:1357
zap_pmd_range mm/memory.c:1467 [inline]
zap_pud_range mm/memory.c:1496 [inline]
zap_p4d_range mm/memory.c:1517 [inline]
unmap_page_range+0x745/0xa20 mm/memory.c:1538
unmap_vmas+0x202/0x390 mm/memory.c:1615
exit_mmap+0x3c6/0x6f0 mm/mmap.c:3170
__mmput+0x111/0x3a0 kernel/fork.c:1113
exit_mm+0x211/0x2f0 kernel/exit.c:507
do_exit+0x688/0x24f0 kernel/exit.c:819
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x1740/0x2120 kernel/signal.c:2830
arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f5b30b36a04
Code: Unable to access opcode bytes at RIP 0x7f5b30b369da.
RSP: 002b:00007f5b2e0f9060 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: 0000000000000007 RBX: 00007f5b30c96f60 RCX: 00007f5b30b36a04
RDX: 0000000000000000 RSI: 00007f5b2e0f90f0 RDI: 00000000ffffff9c
RBP: 00007f5b2e0f90f0 R08: 0000000000000000 R09: 00007f5b2e0f8f70
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fffcbe68a3f R14: 00007f5b2e0f9300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 24987 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x22d/0x390 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x1e33/0x2bc0 kernel/rcu/tree.c:2597
update_process_times+0x197/0x200 kernel/time/timer.c:1785
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1421
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:unwind_next_frame+0x5f9/0x1fc0 arch/x86/kernel/unwind_orc.c:470
Code: 49 8d 6d 36 48 89 e8 48 c1 e8 03 42 8a 04 30 84 c0 0f 85 48 17 00 00 80 7d 00 00 0f 84 18 0f 00 00 48 83 c3 70 e9 69 01 00 00 <49> 8d 5d 40 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8
RSP: 0018:ffffc90000006f00 EFLAGS: 00000293
RAX: 0000000000000002 RBX: 0000000000000004 RCX: ffffffff8e12c4cc
RDX: ffffffff8e7ed7d0 RSI: ffffffff81be8847 RDI: 0000000000000001
RBP: ffffffff8e7ed7d0 R08: 0000000000000001 R09: ffffc900000070b0
R10: fffff52000000e04 R11: 0000000000000000 R12: 1ffffffff1cfdafa
R13: ffffc90000006fc0 R14: dffffc0000000000 R15: ffffffff8e7ed7d4
arch_stack_walk+0x112/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4c/0x80 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x10d/0x150 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kmem_cache_free+0x95/0x190 mm/slub.c:3529
br_dev_xmit+0x10f8/0x15b0 net/bridge/br_device.c:99
__netdev_start_xmit include/linux/netdevice.h:4987 [inline]
netdev_start_xmit include/linux/netdevice.h:5001 [inline]
xmit_one net/core/dev.c:3590 [inline]
dev_hard_start_xmit+0x20b/0x450 net/core/dev.c:3606
__dev_queue_xmit+0x1adc/0x35c0 net/core/dev.c:4226
hsr_xmit net/hsr/hsr_forward.c:381 [inline]
hsr_forward_do net/hsr/hsr_forward.c:472 [inline]
hsr_forward_skb+0x1225/0x1ff0 net/hsr/hsr_forward.c:620
hsr_announce+0x15b/0x2d0 net/hsr/hsr_device.c:382
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x71a/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:pmd_page_vaddr arch/x86/include/asm/pgtable.h:800 [inline]
RIP: 0010:pte_offset_kernel include/linux/pgtable.h:90 [inline]
RIP: 0010:copy_pte_range+0x2f7/0x30c0 mm/memory.c:1024
Code: ea ff ff 4c 8d 74 18 28 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 f7 e8 2c 9a 11 00 49 8b 3e <4d> 21 ec 48 b8 00 00 00 00 80 88 ff ff 49 01 c4 48 8b 5c 24 50 c1
RSP: 0018:ffffc900041af4e0 EFLAGS: 00000246
RAX: 1ffffd4000acfbd5 RBX: 000000000567de80 RCX: dffffc0000000000
RDX: ffff88808bfc3a00 RSI: 0000000000000067 RDI: ffff88806f9008a0
RBP: ffffc900041af730 R08: ffffffff81be87f4 R09: ffffc900041af6c0
R10: fffff52000835eda R11: 0000000000000000 R12: 000ffffffffff000
R13: 0000000159f7a067 R14: ffffea000567dea8 R15: 000fffffffe00000
copy_pmd_range mm/memory.c:1159 [inline]
copy_pud_range mm/memory.c:1196 [inline]
copy_p4d_range mm/memory.c:1220 [inline]
copy_page_range+0xce6/0x1140 mm/memory.c:1293
dup_mmap+0xa87/0xfd0 kernel/fork.c:609
dup_mm+0x8c/0x310 kernel/fork.c:1450
copy_mm kernel/fork.c:1502 [inline]
copy_process+0x28d7/0x5ca0 kernel/fork.c:2191
kernel_clone+0x22a/0x7e0 kernel/fork.c:2581
__do_sys_fork+0xac/0x110 kernel/fork.c:2644
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd4a63beae9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd4a3934188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039
RAX: ffffffffffffffda RBX: 00007fd4a64d1f60 RCX: 00007fd4a63beae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd4a6418f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd9adac05f R14: 00007fd4a3934300 R15: 0000000000022000
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 83 b5 80 46 86 c8 61 xorl $0x61,-0x3779b980(%rbp)
7: 49 0f af c6 imul %r14,%rax
b: 48 c1 e8 30 shr $0x30,%rax
f: 48 8d 1c c5 e0 9b a9 lea -0x70566420(,%rax,8),%rbx
16: 8f
17: 48 89 d8 mov %rbx,%rax
1a: 48 c1 e8 03 shr $0x3,%rax
1e: 48 89 44 24 40 mov %rax,0x40(%rsp)
23: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
* 28: 74 08 je 0x32 <-- trapping instruction
2a: 48 89 df mov %rbx,%rdi
2d: e8 e5 86 69 00 callq 0x698717
32: 48 89 5c 24 20 mov %rbx,0x20(%rsp)
37: 48 8b 1b mov (%rbx),%rbx
3a: 48 85 db test %rbx,%rbx
3d: 74 .byte 0x74