rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P18131/1:b..l
(detected by 1, t=10503 jiffies, g=83553, q=3 ncpus=2)
task:syz.2.3349 state:R running task stack:23416 pid:18131 ppid:9086 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6561
preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6873
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:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666
Code: 2b 00 74 08 4c 89 f7 e8 af 54 77 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:ffffc9000c9d7680 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200193aedc RCX: 1ffff9200193ae7c
RDX: dffffc0000000000 RSI: ffffffff8b0c2f40 RDI: ffffffff8b5f70e0
RBP: ffffc9000c9d77c8 R08: dffffc0000000000 R09: fffffbfff225764d
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200193aed8
R13: dffffc0000000000 R14: ffffc9000c9d76e0 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock include/linux/rcupdate.h:791 [inline]
count_memcg_event_mm+0xad/0x410 include/linux/memcontrol.h:1095
handle_mm_fault+0x15b/0x5340 mm/memory.c:5272
faultin_page mm/gup.c:1026 [inline]
__get_user_pages+0x4f3/0x1190 mm/gup.c:1250
populate_vma_page_range+0x217/0x2b0 mm/gup.c:1607
__mm_populate+0x275/0x440 mm/gup.c:1721
mm_populate include/linux/mm.h:2823 [inline]
vm_mmap_pgoff+0x22b/0x2d0 mm/util.c:525
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: 0033:0x7f5d74d8d169
RSP: 002b:00007f5d75cc8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f5d74fa5fa0 RCX: 00007f5d74d8d169
RDX: 0000000000000002 RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f5d74e0e2a0 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5d74fa5fa0 R15: 00007ffe65506888
rcu: rcu_preempt kthread timer wakeup didn't happen for 10535 jiffies! g83553 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=67179
rcu: rcu_preempt kthread starved for 10538 jiffies! g83553 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26656 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6561
schedule+0xbf/0x180 kernel/sched/core.c:6637
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
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 18143 Comm: syz.9.3353 Not tainted 6.1.132-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:254 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:206
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 5f fc 33 03 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc9000ca67ca8 EFLAGS: 00000246
RAX: 00000000000000f6 RBX: ffffffff8cdf6b78 RCX: 000000000000083f
RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
RBP: 0000000000000000 R08: ffffffff8442f164 R09: fffff5200194cf85
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b8f33d90
R13: 1ffff9200194cf00 R14: dffffc0000000000 R15: 0000000000000020
FS: 00007f7e0856c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001dff8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_irq_work_raise+0x82/0xd0 arch/x86/kernel/irq_work.c:31
irq_work_queue+0xa3/0x150 kernel/irq_work.c:114
bpf_send_signal_common+0x2e6/0x450 kernel/trace/bpf_trace.c:878
____bpf_send_signal kernel/trace/bpf_trace.c:887 [inline]
bpf_send_signal+0x15/0x20 kernel/trace/bpf_trace.c:885
bpf_prog_7ba5217f62dcd359+0x38/0x3c
bpf_dispatcher_nop_func include/linux/bpf.h:1000 [inline]
__bpf_prog_run include/linux/filter.h:603 [inline]
bpf_prog_run include/linux/filter.h:610 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2284 [inline]
bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2323
__bpf_trace_sys_enter+0x60/0x70 include/trace/events/syscalls.h:18
trace_sys_enter include/trace/events/syscalls.h:18 [inline]
syscall_trace_enter kernel/entry/common.c:81 [inline]
__syscall_enter_from_user_work kernel/entry/common.c:100 [inline]
syscall_enter_from_user_mode+0x206/0x230 kernel/entry/common.c:118
do_syscall_64+0x1e/0xb0 arch/x86/entry/common.c:77
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7e07729359
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007f7e0856bb40 EFLAGS: 00000246 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007f7e079a5fa8 RCX: 00007f7e07729359
RDX: 00007f7e0856bb40 RSI: 00007f7e0856bc70 RDI: 0000000000000011
RBP: 00007f7e079a5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7e079a5fac
R13: 0000000000000000 R14: 00007ffcf5bd4170 R15: 00007ffcf5bd4258