kthread+0x34b/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299 watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.0:16813] Modules linked in: CPU: 1 PID: 16813 Comm: syz-executor.0 Tainted: G W 5.10.210-syzkaller-00394-g70b6ab09a34b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline] RIP: 0010:smp_call_function_single+0x278/0x510 kernel/smp.c:517 Code: 0f 85 18 02 00 00 44 8b 6c 24 48 44 89 ee 83 e6 01 31 ff e8 7a f0 0a 00 41 83 e5 01 75 0a e8 bf ec 0a 00 e9 eb 00 00 00 f3 90 <42> 0f b6 04 23 84 c0 75 15 f7 44 24 48 01 00 00 00 0f 84 cd 00 00 RSP: 0018:ffffc900013876e0 EFLAGS: 00000293 RAX: ffffffff815fbd64 RBX: 1ffff92000270ee5 RCX: ffff88812ef3a780 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900013877d0 R08: ffffffff815fbd36 R09: ffffed103ee0aec9 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffc90001387728 R15: 0000000000000000 FS: 0000555555ffa480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020b7f000 CR3: 000000013c833000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many_cond+0x94e/0xa30 kernel/smp.c:653 smp_call_function_many kernel/smp.c:716 [inline] smp_call_function kernel/smp.c:738 [inline] on_each_cpu+0xa8/0x1a0 kernel/smp.c:837 text_poke_sync arch/x86/kernel/alternative.c:1313 [inline] text_poke_bp_batch+0x1d4/0x600 arch/x86/kernel/alternative.c:1504 text_poke_bp+0xc8/0x140 arch/x86/kernel/alternative.c:1718 __static_call_transform+0xe4/0x120 arch/x86/kernel/static_call.c:56 arch_static_call_transform+0x7f/0x1d0 arch/x86/kernel/static_call.c:100 __static_call_update+0xd2/0x5c0 kernel/static_call.c:136 tracepoint_update_call kernel/tracepoint.c:338 [inline] tracepoint_remove_func kernel/tracepoint.c:462 [inline] tracepoint_probe_unregister+0x8d1/0x9e0 kernel/tracepoint.c:572 bpf_probe_unregister+0x61/0x70 kernel/trace/bpf_trace.c:2135 bpf_raw_tp_link_release+0x63/0x90 kernel/bpf/syscall.c:2762 bpf_link_free kernel/bpf/syscall.c:2356 [inline] bpf_link_put+0x1fd/0x280 kernel/bpf/syscall.c:2382 bpf_link_release+0x3b/0x40 kernel/bpf/syscall.c:2390 __fput+0x309/0x760 fs/file_table.c:281 ____fput+0x15/0x20 fs/file_table.c:314 task_work_run+0x129/0x190 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop+0xbf/0xd0 kernel/entry/common.c:172 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0xc5/0x1d0 kernel/entry/common.c:274 do_syscall_64+0x40/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f20a692dd9a Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007fff3b71ce40 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f20a692dd9a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f20a6a5e980 R08: 0000001b30f20000 R09: 0000000000000076 R10: 000000008181567e R11: 0000000000000293 R12: 00000000000b3631 R13: 00000000000b334f R14: 00007fff3b71d000 R15: 00007f20a68e5cb0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 16865 Comm: syz-executor.4 Tainted: G W 5.10.210-syzkaller-00394-g70b6ab09a34b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:66 [inline] RIP: 0010:halt arch/x86/include/asm/irqflags.h:112 [inline] RIP: 0010:kvm_wait+0xec/0x150 arch/x86/kernel/kvm.c:921 Code: 03 42 0f b6 04 20 84 c0 75 6a 41 0f b6 45 00 44 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 65 4e d5 03 f4 0e 0f 1f 44 00 00 0f 00 2d 56 4e d5 03 fb f4 4c 89 7c 24 18 ff RSP: 0000:ffffc90001dfef60 EFLAGS: 00000046 RAX: 0000000000000003 RBX: 1ffff920003bfdf0 RCX: ffffffff8150b5a4 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc90001dfefa0 RBP: ffffc90001dff010 R08: dffffc0000000000 R09: ffffed1022b44579 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff888115a22bc0 R14: 0000000000000003 R15: 0000000000000046 FS: 00007f03837306c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000200000 CR3: 0000000144d0e000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:564 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [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:195 [inline] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irqsave+0x1a0/0x210 kernel/locking/spinlock.c:159 force_sig_info_to_task+0x67/0x320 kernel/signal.c:1320 force_sig_fault_to_task kernel/signal.c:1684 [inline] force_sig_fault+0x125/0x1c0 kernel/signal.c:1691 no_context+0x2e1/0xf20 arch/x86/mm/fault.c:672 __bad_area_nosemaphore+0xcd/0x440 arch/x86/mm/fault.c:848 bad_area_nosemaphore+0x2d/0x40 arch/x86/mm/fault.c:855 handle_page_fault arch/x86/mm/fault.c:1462 [inline] exc_page_fault+0x3ea/0x5b0 arch/x86/mm/fault.c:1518 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0010:.E_copy+0x12/0x111 Code: 0a 48 83 e1 f8 48 8b 01 8d 0a 83 e1 07 c1 e1 03 48 d3 e8 e9 d6 69 91 fd 48 89 c8 c3 01 ca e9 83 84 94 fd c1 e1 06 01 ca eb 07 <8d> 14 ca eb 02 89 ca e9 70 84 94 fd 01 ca e9 69 84 94 fd 8d 0c ca RSP: 0000:ffffc90001dff660 EFLAGS: 00050002 RAX: 000000000000000e RBX: ffff888131089ed0 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffc90001dff6e8 RDI: 0000000000200000 RBP: ffffc90001dff690 R08: 0000000000000000 R09: ffffffff81aee863 R10: 0000000000000003 R11: ffff8881310893c0 R12: 0000000000200000 R13: 0000000000000008 R14: 1ffff110262113da R15: ffffc90001dff6e8 ____bpf_probe_write_user kernel/trace/bpf_trace.c:337 [inline] bpf_probe_write_user+0x96/0xf0 kernel/trace/bpf_trace.c:313 bpf_prog_42b0bc03b33f5c41+0x3f/0xc40 bpf_dispatcher_nop_func include/linux/bpf.h:669 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2061 [inline] bpf_trace_run5+0x176/0x320 kernel/trace/bpf_trace.c:2101 __bpf_trace_signal_generate+0x3c/0x50 include/trace/events/signal.h:50 trace_signal_generate include/trace/events/signal.h:50 [inline] __send_signal+0xb39/0xb90 kernel/signal.c:1186 send_signal+0x4c1/0x5e0 kernel/signal.c:1245 force_sig_info_to_task+0x272/0x320 kernel/signal.c:1337 force_sig_fault_to_task kernel/signal.c:1684 [inline] force_sig_fault+0x125/0x1c0 kernel/signal.c:1691 no_context+0x2e1/0xf20 arch/x86/mm/fault.c:672 __bad_area_nosemaphore+0xcd/0x440 arch/x86/mm/fault.c:848 __bad_area arch/x86/mm/fault.c:869 [inline] bad_area+0x69/0x80 arch/x86/mm/fault.c:875 handle_page_fault arch/x86/mm/fault.c:1462 [inline] exc_page_fault+0x439/0x5b0 arch/x86/mm/fault.c:1518 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0010:__put_user_nocheck_8+0x11/0x21 Code: 0f 01 ca c3 66 0f 1f 44 00 00 48 bb f9 ef ff ff ff 7f 00 00 48 39 d9 73 14 0f 01 cb 48 89 01 31 c9 0f 01 ca c3 0f 1f 44 00 00 <0f> 01 ca b9 f2 ff ff ff c3 cc cc cc cc cc cc cc 55 48 89 e5 41 57 RSP: 0000:ffffc90001dffd98 EFLAGS: 00050283 RAX: 00000000773594a9 RBX: 00007fffffffeff9 RCX: 0000000000000019 RDX: ffffc9000b4f0000 RSI: 0000000000000ab1 RDI: 0000000000000ab2 RBP: ffffc90001dffe48 R08: ffffffff815b6014 R09: ffffc90001dffde0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90001dffde0 R13: dffffc0000000000 R14: 1ffff920003bffb8 R15: 0000000000000019 emulate_vsyscall+0xe33/0x13d0 arch/x86/entry/vsyscall/vsyscall_64.c:246 do_user_addr_fault arch/x86/mm/fault.c:1309 [inline] handle_page_fault arch/x86/mm/fault.c:1462 [inline] exc_page_fault+0x147/0x5b0 arch/x86/mm/fault.c:1518 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0033:_end+0x783da000/0x0 Code: Unable to access opcode bytes at RIP 0xffffffffff5fffd6. RSP: 002b:00007f038372fb38 EFLAGS: 00010246 RAX: ffffffffffffffda RBX: 00007f0384aeaf80 RCX: 00007f03849bcea9 RDX: 00007f038372fb40 RSI: 00007f038372fc70 RDI: 0000000000000019 RBP: 00007f0384a094a4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0384aeaf80 R15: 00007ffcf1e07b58