rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (1 GPs behind) idle=491c/1/0x4000000000000000 softirq=24571/24578 fqs=1 (detected by 0, t=10502 jiffies, g=32773, q=191 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 10665 Comm: syz-executor.3 Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1521 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 10665, name: syz-executor.3 preempt_count: 120003, expected: 0 RCU nest depth: 1, expected: 0 3 locks held by syz-executor.3/10665: #0: ffffffff8be36470 (cpu_hotplug_lock){++++}-{0:0}, at: clock_was_set+0x10f/0x8a0 kernel/time/hrtimer.c:960 #1: ffff8880b9b2a558 (hrtimer_bases.lock){-.-.}-{2:2}, at: __run_hrtimer kernel/time/hrtimer.c:1689 [inline] #1: ffff8880b9b2a558 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x23e/0xe40 kernel/time/hrtimer.c:1749 #2: ffffffff91416dd8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_deactivate lib/debugobjects.c:739 [inline] #2: ffffffff91416dd8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_deactivate+0x101/0x300 lib/debugobjects.c:727 irq event stamp: 74 hardirqs last enabled at (73): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (73): [] _raw_spin_unlock_irqrestore+0x50/0x70 kernel/locking/spinlock.c:194 hardirqs last disabled at (74): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (48): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (48): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (15): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (15): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 10665 Comm: syz-executor.3 Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 syz-executor.3[10665] cmdline: /root/syz-executor.3 exec Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:122 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:140 __might_resched.cold+0x222/0x26b kernel/sched/core.c:9896 down_read_killable+0x75/0x490 kernel/locking/rwsem.c:1521 mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] __access_remote_vm+0xac/0x6f0 mm/memory.c:5461 get_mm_cmdline.part.0+0x217/0x620 fs/proc/base.c:299 get_mm_cmdline fs/proc/base.c:367 [inline] get_task_cmdline_kernel+0x1d9/0x220 fs/proc/base.c:367 dump_stack_print_cmdline.part.0+0x82/0x150 lib/dump_stack.c:61 dump_stack_print_cmdline lib/dump_stack.c:89 [inline] dump_stack_print_info+0x185/0x190 lib/dump_stack.c:97 show_regs+0x10/0x40 arch/x86/kernel/dumpstack.c:460 nmi_cpu_backtrace.cold+0x26/0x14f lib/nmi_backtrace.c:109 nmi_cpu_backtrace_handler+0x8/0x10 arch/x86/kernel/apic/hw_nmi.c:45 nmi_handle+0x13d/0x3e0 arch/x86/kernel/nmi.c:140 default_do_nmi+0x6b/0x170 arch/x86/kernel/nmi.c:337 exc_nmi+0xf7/0x120 arch/x86/kernel/nmi.c:513 end_repeat_nmi+0x16/0x31 RIP: 0010:__lock_release kernel/locking/lockdep.c:5350 [inline] RIP: 0010:lock_release+0x217/0x780 kernel/locking/lockdep.c:5686 Code: e8 8e 0f ff ff 48 85 c0 48 89 c3 0f 84 c3 03 00 00 48 8d 78 24 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a7 04 00 00 8b RSP: 0018:ffffc900001e0c78 EFLAGS: 00000803 RAX: dffffc0000000000 RBX: ffff8880461ca848 RCX: ffffc900001e0cc8 RDX: 0000000000000000 RSI: ffffffff91416dd8 RDI: ffff8880461ca86c RBP: 1ffff9200003c191 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff91416dd8 R13: 0000000000000003 R14: ffff8880461ca7f0 R15: ffff8880461c9d80 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:194 debug_object_deactivate lib/debugobjects.c:761 [inline] debug_object_deactivate+0x264/0x300 lib/debugobjects.c:727 debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline] debug_deactivate kernel/time/hrtimer.c:481 [inline] __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0x3f3/0xe40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 aa 30 dc f7 48 89 ef e8 32 b2 dc f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 a3 65 cf f7 65 8b 05 dc 19 7f 76 85 c0 74 0a 5b 5d c3 e8 30 39 RSP: 0018:ffffc9000628fcb0 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff211c22e RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8880b9a2a540 R08: 0000000000000001 R09: ffffffff908e0947 R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000004 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 clock_was_set+0x5ff/0x8a0 kernel/time/hrtimer.c:970 do_settimeofday64 kernel/time/timekeeping.c:1345 [inline] do_settimeofday64+0x3c0/0x5c0 kernel/time/timekeeping.c:1312 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1088 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1076 [inline] __x64_sys_clock_settime+0x1a1/0x280 kernel/time/posix-timers.c:1076 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff017289279 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff018491168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007ff01739bf80 RCX: 00007ff017289279 RDX: 0000000000000000 RSI: 0000000020004340 RDI: 0000000000000000 RBP: 00007ff0172e3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff009541bf R14: 00007ff018491300 R15: 0000000000022000 syz-executor.3[10665] cmdline: /root/syz-executor.3 exec Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__lock_release kernel/locking/lockdep.c:5350 [inline] RIP: 0010:lock_release+0x217/0x780 kernel/locking/lockdep.c:5686 Code: e8 8e 0f ff ff 48 85 c0 48 89 c3 0f 84 c3 03 00 00 48 8d 78 24 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a7 04 00 00 8b RSP: 0018:ffffc900001e0c78 EFLAGS: 00000803 RAX: dffffc0000000000 RBX: ffff8880461ca848 RCX: ffffc900001e0cc8 RDX: 0000000000000000 RSI: ffffffff91416dd8 RDI: ffff8880461ca86c RBP: 1ffff9200003c191 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff91416dd8 R13: 0000000000000003 R14: ffff8880461ca7f0 R15: ffff8880461c9d80 FS: 00007ff018491700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0177a0000 CR3: 000000003f6ab000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:194 debug_object_deactivate lib/debugobjects.c:761 [inline] debug_object_deactivate+0x264/0x300 lib/debugobjects.c:727 debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline] debug_deactivate kernel/time/hrtimer.c:481 [inline] __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0x3f3/0xe40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 aa 30 dc f7 48 89 ef e8 32 b2 dc f7 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 a3 65 cf f7 65 8b 05 dc 19 7f 76 85 c0 74 0a 5b 5d c3 e8 30 39 RSP: 0018:ffffc9000628fcb0 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff211c22e RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8880b9a2a540 R08: 0000000000000001 R09: ffffffff908e0947 R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000004 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 clock_was_set+0x5ff/0x8a0 kernel/time/hrtimer.c:970 do_settimeofday64 kernel/time/timekeeping.c:1345 [inline] do_settimeofday64+0x3c0/0x5c0 kernel/time/timekeeping.c:1312 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1088 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1076 [inline] __x64_sys_clock_settime+0x1a1/0x280 kernel/time/posix-timers.c:1076 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff017289279 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff018491168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007ff01739bf80 RCX: 00007ff017289279 RDX: 0000000000000000 RSI: 0000000020004340 RDI: 0000000000000000 RBP: 00007ff0172e3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff009541bf R14: 00007ff018491300 R15: 0000000000022000 rcu: rcu_preempt kthread starved for 10500 jiffies! g32773 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:28720 pid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5197 [inline] __schedule+0xadf/0x52b0 kernel/sched/core.c:6509 schedule+0xda/0x1b0 kernel/sched/core.c:6585 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1657 rcu_gp_kthread+0x236/0x360 kernel/rcu/tree.c:1854 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 rcu: Stack dump where RCU GP kthread last ran: NMI backtrace for cpu 0 CPU: 0 PID: 10670 Comm: syz-executor.1 Tainted: G W 6.0.0-rc1-next-20220819-syzkaller #0 ============================= [ BUG: Invalid wait context ] 6.0.0-rc1-next-20220819-syzkaller #0 Tainted: G W ----------------------------- syz-executor.1/10670 is trying to lock: ffff888077387128 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] ffff888077387128 (&mm->mmap_lock#2){++++}-{3:3}, at: __access_remote_vm+0xac/0x6f0 mm/memory.c:5461 other info that might help us debug this: context-{2:2} 4 locks held by syz-executor.1/10670: #0: ffffffff8bff3208 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0x7d/0xe0 kernel/tracepoint.c:478 #1: ffffffff8be36470 (cpu_hotplug_lock){++++}-{0:0}, at: __static_call_update+0x87/0x620 kernel/static_call_inline.c:128 #2: ffffffff8c063508 (static_call_mutex){+.+.}-{3:3}, at: static_call_lock kernel/static_call_inline.c:25 [inline] #2: ffffffff8c063508 (static_call_mutex){+.+.}-{3:3}, at: __static_call_update+0x95/0x620 kernel/static_call_inline.c:129 #3: ffffffff8be51848 (text_mutex){+.+.}-{3:3}, at: arch_static_call_transform+0x1f/0x90 arch/x86/kernel/static_call.c:114 stack backtrace: CPU: 0 PID: 10670 Comm: syz-executor.1 Tainted: G W 6.0.0-rc1-next-20220819-syzkaller #0 syz-executor.1[10670] cmdline: /root/syz-executor.1 exec Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:122 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:140 print_lock_invalid_wait_context kernel/locking/lockdep.c:4705 [inline] check_wait_context kernel/locking/lockdep.c:4766 [inline] __lock_acquire.cold+0x322/0x3a7 kernel/locking/lockdep.c:5003 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 down_read_killable+0x9b/0x490 kernel/locking/rwsem.c:1522 mmap_read_lock_killable include/linux/mmap_lock.h:126 [inline] __access_remote_vm+0xac/0x6f0 mm/memory.c:5461 get_mm_cmdline.part.0+0x217/0x620 fs/proc/base.c:299 get_mm_cmdline fs/proc/base.c:367 [inline] get_task_cmdline_kernel+0x1d9/0x220 fs/proc/base.c:367 dump_stack_print_cmdline.part.0+0x82/0x150 lib/dump_stack.c:61 dump_stack_print_cmdline lib/dump_stack.c:89 [inline] dump_stack_print_info+0x185/0x190 lib/dump_stack.c:97 __dump_stack lib/dump_stack.c:121 [inline] dump_stack_lvl+0xc1/0x134 lib/dump_stack.c:140 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514 print_other_cpu_stall kernel/rcu/tree_stall.h:619 [inline] check_cpu_stall kernel/rcu/tree_stall.h:762 [inline] rcu_pending kernel/rcu/tree.c:3660 [inline] rcu_sched_clock_irq+0x2404/0x2530 kernel/rcu/tree.c:2342 update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x5c3/0x1430 kernel/smp.c:988 Code: 89 ee e8 90 a8 0a 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 af ab 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 b5 0b 00 00 8b 43 08 31 RSP: 0018:ffffc9000a7df600 EFLAGS: 00000246 RAX: 0000000000040000 RBX: ffff8880b9b3edc0 RCX: ffffc90005901000 RDX: 0000000000040000 RSI: ffffffff817169a1 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017367db9 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1302 [inline] text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1490 text_poke_bp+0xad/0x110 arch/x86/kernel/alternative.c:1706 arch_static_call_transform+0x4d/0x90 arch/x86/kernel/static_call.c:118 __static_call_update+0xcf/0x620 kernel/static_call_inline.c:136 tracepoint_update_call kernel/tracepoint.c:317 [inline] tracepoint_add_func+0xa18/0xe50 kernel/tracepoint.c:358 tracepoint_probe_register_prio_may_exist+0x9e/0xe0 kernel/tracepoint.c:482 tracepoint_probe_register_may_exist include/linux/tracepoint.h:52 [inline] __bpf_probe_register kernel/trace/bpf_trace.c:2109 [inline] bpf_probe_register+0x15f/0x1d0 kernel/trace/bpf_trace.c:2115 bpf_raw_tp_link_attach+0x2be/0x5f0 kernel/bpf/syscall.c:3327 bpf_raw_tracepoint_open kernel/bpf/syscall.c:3354 [inline] __sys_bpf+0x20f1/0x6130 kernel/bpf/syscall.c:4995 __do_sys_bpf kernel/bpf/syscall.c:5057 [inline] __se_sys_bpf kernel/bpf/syscall.c:5055 [inline] __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:5055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f18e2089279 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f18e316a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f18e219bf80 RCX: 00007f18e2089279 RDX: 0000000000000010 RSI: 0000000020000080 RDI: 0000000000000011 RBP: 00007f18e20e3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7333d5ff R14: 00007f18e316a300 R15: 0000000000022000 syz-executor.1[10670] cmdline: /root/syz-executor.1 exec Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:122 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:140 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:514 print_other_cpu_stall kernel/rcu/tree_stall.h:619 [inline] check_cpu_stall kernel/rcu/tree_stall.h:762 [inline] rcu_pending kernel/rcu/tree.c:3660 [inline] rcu_sched_clock_irq+0x2404/0x2530 kernel/rcu/tree.c:2342 update_process_times+0x11a/0x1a0 kernel/time/timer.c:1839 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243 tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1480 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:csd_lock_wait kernel/smp.c:414 [inline] RIP: 0010:smp_call_function_many_cond+0x5c3/0x1430 kernel/smp.c:988 Code: 89 ee e8 90 a8 0a 00 85 ed 74 48 48 8b 44 24 08 49 89 c4 83 e0 07 49 c1 ec 03 48 89 c5 4d 01 f4 83 c5 03 e8 af ab 0a 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 b5 0b 00 00 8b 43 08 31 RSP: 0018:ffffc9000a7df600 EFLAGS: 00000246 RAX: 0000000000040000 RBX: ffff8880b9b3edc0 RCX: ffffc90005901000 RDX: 0000000000040000 RSI: ffffffff817169a1 RDI: 0000000000000005 RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffed1017367db9 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1154 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1302 [inline] text_poke_bp_batch+0x233/0x6c0 arch/x86/kernel/alternative.c:1490 text_poke_bp+0xad/0x110 arch/x86/kernel/alternative.c:1706 arch_static_call_transform+0x4d/0x90 arch/x86/kernel/static_call.c:118 __static_call_update+0xcf/0x620 kernel/static_call_inline.c:136 tracepoint_update_call kernel/tracepoint.c:317 [inline] tracepoint_add_func+0xa18/0xe50 kernel/tracepoint.c:358 tracepoint_probe_register_prio_may_exist+0x9e/0xe0 kernel/tracepoint.c:482 tracepoint_probe_register_may_exist include/linux/tracepoint.h:52 [inline] __bpf_probe_register kernel/trace/bpf_trace.c:2109 [inline] bpf_probe_register+0x15f/0x1d0 kernel/trace/bpf_trace.c:2115 bpf_raw_tp_link_attach+0x2be/0x5f0 kernel/bpf/syscall.c:3327 bpf_raw_tracepoint_open kernel/bpf/syscall.c:3354 [inline] __sys_bpf+0x20f1/0x6130 kernel/bpf/syscall.c:4995 __do_sys_bpf kernel/bpf/syscall.c:5057 [inline] __se_sys_bpf kernel/bpf/syscall.c:5055 [inline] __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:5055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f18e2089279 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f18e316a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f18e219bf80 RCX: 00007f18e2089279 RDX: 0000000000000010 RSI: 0000000020000080 RDI: 0000000000000011 RBP: 00007f18e20e3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc7333d5ff R14: 00007f18e316a300 R15: 0000000000022000