------------[ cut here ]------------ ====================================================== WARNING: possible circular locking dependency detected 6.1.82-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/4313 is trying to acquire lock: ffffffff8d006ad8 ((console_sem).lock){..-.}-{2:2}, at: down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:139 but task is already holding lock: ffff8880b9828358 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&base->lock){-.-.}-{2:2}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 lock_timer_base+0x120/0x260 kernel/time/timer.c:999 __mod_timer+0x1cb/0xee0 kernel/time/timer.c:1072 queue_delayed_work_on+0x156/0x250 kernel/workqueue.c:1704 psi_task_change+0xf9/0x270 kernel/sched/psi.c:924 psi_enqueue kernel/sched/stats.h:141 [inline] enqueue_task+0x2fd/0x3a0 kernel/sched/core.c:2056 activate_task kernel/sched/core.c:2088 [inline] wake_up_new_task+0x4f5/0xca0 kernel/sched/core.c:4742 kernel_clone+0x4ed/0x920 kernel/fork.c:2713 user_mode_thread+0x12e/0x190 kernel/fork.c:2758 rest_init+0x23/0x300 init/main.c:696 start_kernel+0x0/0x53f init/main.c:891 start_kernel+0x496/0x53f init/main.c:1138 secondary_startup_64_no_verify+0xcf/0xdb -> #2 (&rq->__lock){-.-.}-{2:2}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 _raw_spin_lock_nested+0x2d/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537 raw_spin_rq_lock kernel/sched/sched.h:1354 [inline] rq_lock kernel/sched/sched.h:1644 [inline] task_fork_fair+0x5d/0x350 kernel/sched/fair.c:11863 sched_cgroup_fork+0x374/0x400 kernel/sched/core.c:4686 copy_process+0x2442/0x4060 kernel/fork.c:2384 kernel_clone+0x222/0x920 kernel/fork.c:2682 user_mode_thread+0x12e/0x190 kernel/fork.c:2758 rest_init+0x23/0x300 init/main.c:696 start_kernel+0x0/0x53f init/main.c:891 start_kernel+0x496/0x53f init/main.c:1138 secondary_startup_64_no_verify+0xcf/0xdb -> #1 (&p->pi_lock){-.-.}-{2:2}: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 try_to_wake_up+0xad/0x12e0 kernel/sched/core.c:4112 up+0x6e/0x90 kernel/locking/semaphore.c:191 __up_console_sem+0x11a/0x1e0 kernel/printk/printk.c:260 __console_unlock kernel/printk/printk.c:2662 [inline] console_unlock+0x591/0x7c0 kernel/printk/printk.c:2873 vprintk_emit+0x523/0x740 kernel/printk/printk.c:2268 _printk+0xd1/0x111 kernel/printk/printk.c:2293 squashfs_read_data+0x712/0xaf0 fs/squashfs/block.c:230 squashfs_readpage_block+0x670/0xf60 fs/squashfs/file_direct.c:75 squashfs_read_folio+0x565/0xed0 fs/squashfs/file.c:479 filemap_read_folio+0x199/0x780 mm/filemap.c:2461 filemap_update_page mm/filemap.c:2546 [inline] filemap_get_pages mm/filemap.c:2660 [inline] filemap_read+0x1a13/0x31d0 mm/filemap.c:2730 __kernel_read+0x41e/0x8a0 fs/read_write.c:428 prepare_binprm fs/exec.c:1666 [inline] search_binary_handler fs/exec.c:1720 [inline] exec_binprm fs/exec.c:1777 [inline] bprm_execve+0x891/0x18a0 fs/exec.c:1846 do_execveat_common+0x580/0x720 fs/exec.c:1951 do_execveat fs/exec.c:2036 [inline] __do_sys_execveat fs/exec.c:2110 [inline] __se_sys_execveat fs/exec.c:2104 [inline] __x64_sys_execveat+0xc0/0xe0 fs/exec.c:2104 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd -> #0 ((console_sem).lock){..-.}-{2:2}: check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:139 __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:243 console_trylock kernel/printk/printk.c:2615 [inline] console_trylock_spinning kernel/printk/printk.c:1867 [inline] vprintk_emit+0x1ee/0x740 kernel/printk/printk.c:2267 _printk+0xd1/0x111 kernel/printk/printk.c:2293 __report_bug lib/bug.c:195 [inline] report_bug+0x342/0x500 lib/bug.c:219 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:324 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:345 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:568 __local_bh_enable_ip+0x1b3/0x1f0 sock_hash_delete_elem+0x1a0/0x2f0 net/core/sock_map.c:940 bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run3+0x231/0x440 kernel/trace/bpf_trace.c:2313 trace_timer_start include/trace/events/timer.h:53 [inline] enqueue_timer+0x440/0x600 kernel/time/timer.c:609 __mod_timer+0x92b/0xee0 dsp_cmx_send+0x21bb/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1850 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1790 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:190 [inline] arch_atomic_long_try_cmpxchg_release include/linux/atomic/atomic-long.h:449 [inline] atomic_long_try_cmpxchg_release include/linux/atomic/atomic-instrumented.h:1790 [inline] __mutex_unlock_slowpath+0x23c/0x750 kernel/locking/mutex.c:924 tracepoint_probe_register_prio_may_exist+0x12c/0x190 kernel/tracepoint.c:483 bpf_raw_tp_link_attach+0x456/0x6b0 kernel/bpf/syscall.c:3372 bpf_raw_tracepoint_open+0x196/0x210 kernel/bpf/syscall.c:3399 __sys_bpf+0x4a7/0x6c0 kernel/bpf/syscall.c:5047 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline] __se_sys_bpf kernel/bpf/syscall.c:5107 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd other info that might help us debug this: Chain exists of: (console_sem).lock --> &rq->__lock --> &base->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&base->lock); lock(&rq->__lock); lock(&base->lock); lock((console_sem).lock); *** DEADLOCK *** 4 locks held by syz-executor.3/4313: #0: ffffc90000007bc0 ((&dsp_spl_tl)){+.-.}-{0:0}, at: call_timer_fn+0xc2/0x6b0 kernel/time/timer.c:1471 #1: ffffffff8e04b218 (dsp_lock){..-.}-{2:2}, at: dsp_cmx_send+0x22/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1643 #2: ffff8880b9828358 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999 #3: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:319 [inline] #3: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:760 [inline] #3: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2272 [inline] #3: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run3+0x146/0x440 kernel/trace/bpf_trace.c:2313 stack backtrace: CPU: 0 PID: 4313 Comm: syz-executor.3 Not tainted 6.1.82-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3090 [inline] check_prevs_add kernel/locking/lockdep.c:3209 [inline] validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:139 __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:243 console_trylock kernel/printk/printk.c:2615 [inline] console_trylock_spinning kernel/printk/printk.c:1867 [inline] vprintk_emit+0x1ee/0x740 kernel/printk/printk.c:2267 _printk+0xd1/0x111 kernel/printk/printk.c:2293 __report_bug lib/bug.c:195 [inline] report_bug+0x342/0x500 lib/bug.c:219 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:324 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:345 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:568 RIP: 0010:__local_bh_enable_ip+0x1b3/0x1f0 kernel/softirq.c:376 Code: 04 25 28 00 00 00 48 3b 44 24 60 75 4a 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b e9 d0 fe ff ff e8 3f 00 00 00 eb a2 <0f> 0b e9 02 ff ff ff 48 c7 c1 64 97 73 8e 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc900000076a0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 1ffff92000000ed8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff88978b20 RBP: ffffc90000007760 R08: dffffc0000000000 R09: ffffed100ef1dd19 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000008 R14: ffffc900000076e0 R15: 0000000000000201 sock_hash_delete_elem+0x1a0/0x2f0 net/core/sock_map.c:940 bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run3+0x231/0x440 kernel/trace/bpf_trace.c:2313 trace_timer_start include/trace/events/timer.h:53 [inline] enqueue_timer+0x440/0x600 kernel/time/timer.c:609 __mod_timer+0x92b/0xee0 dsp_cmx_send+0x21bb/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1850 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1790 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:arch_atomic_long_try_cmpxchg_release include/linux/atomic/atomic-long.h:449 [inline] RIP: 0010:atomic_long_try_cmpxchg_release include/linux/atomic/atomic-instrumented.h:1790 [inline] RIP: 0010:__mutex_unlock_slowpath+0x23c/0x750 kernel/locking/mutex.c:924 Code: 00 e8 18 94 4f f7 43 80 3c 2c 00 4d 89 e7 74 0d 48 8d bc 24 a0 00 00 00 e8 61 92 4f f7 48 8b 84 24 a0 00 00 00 f0 49 0f b1 1e <4c> 8b 64 24 30 0f 84 3d 01 00 00 48 89 c3 43 80 3c 2f 00 0f 85 dd RSP: 0018:ffffc9000b8f79c0 EFLAGS: 00000246 RAX: ffff8880224b8000 RBX: 0000000000000000 RCX: ffffffff8a926638 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000b8f7a60 RBP: ffffc9000b8f7ad0 R08: dffffc0000000000 R09: fffff5200171ef4d R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200171ef4c R13: dffffc0000000000 R14: ffffffff8d171340 R15: 1ffff9200171ef4c tracepoint_probe_register_prio_may_exist+0x12c/0x190 kernel/tracepoint.c:483 bpf_raw_tp_link_attach+0x456/0x6b0 kernel/bpf/syscall.c:3372 bpf_raw_tracepoint_open+0x196/0x210 kernel/bpf/syscall.c:3399 __sys_bpf+0x4a7/0x6c0 kernel/bpf/syscall.c:5047 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline] __se_sys_bpf kernel/bpf/syscall.c:5107 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb867e7dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb868be40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fb867fabf80 RCX: 00007fb867e7dda9 RDX: 0000000000000010 RSI: 0000000020000540 RDI: 0000000000000011 RBP: 00007fb867eca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb867fabf80 R15: 00007ffc3ab535d8 WARNING: CPU: 0 PID: 4313 at kernel/softirq.c:376 __local_bh_enable_ip+0x1b3/0x1f0 Modules linked in: CPU: 0 PID: 4313 Comm: syz-executor.3 Not tainted 6.1.82-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 RIP: 0010:__local_bh_enable_ip+0x1b3/0x1f0 kernel/softirq.c:376 Code: 04 25 28 00 00 00 48 3b 44 24 60 75 4a 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b e9 d0 fe ff ff e8 3f 00 00 00 eb a2 <0f> 0b e9 02 ff ff ff 48 c7 c1 64 97 73 8e 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc900000076a0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 1ffff92000000ed8 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff88978b20 RBP: ffffc90000007760 R08: dffffc0000000000 R09: ffffed100ef1dd19 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 0000000000000008 R14: ffffc900000076e0 R15: 0000000000000201 FS: 00007fb868be46c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31e21000 CR3: 000000005a1ae000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sock_hash_delete_elem+0x1a0/0x2f0 net/core/sock_map.c:940 bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline] __bpf_prog_run include/linux/filter.h:600 [inline] bpf_prog_run include/linux/filter.h:607 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline] bpf_trace_run3+0x231/0x440 kernel/trace/bpf_trace.c:2313 trace_timer_start include/trace/events/timer.h:53 [inline] enqueue_timer+0x440/0x600 kernel/time/timer.c:609 __mod_timer+0x92b/0xee0 dsp_cmx_send+0x21bb/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1850 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1790 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803 __do_softirq+0x2e9/0xa4c kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:arch_atomic_long_try_cmpxchg_release include/linux/atomic/atomic-long.h:449 [inline] RIP: 0010:atomic_long_try_cmpxchg_release include/linux/atomic/atomic-instrumented.h:1790 [inline] RIP: 0010:__mutex_unlock_slowpath+0x23c/0x750 kernel/locking/mutex.c:924 Code: 00 e8 18 94 4f f7 43 80 3c 2c 00 4d 89 e7 74 0d 48 8d bc 24 a0 00 00 00 e8 61 92 4f f7 48 8b 84 24 a0 00 00 00 f0 49 0f b1 1e <4c> 8b 64 24 30 0f 84 3d 01 00 00 48 89 c3 43 80 3c 2f 00 0f 85 dd RSP: 0018:ffffc9000b8f79c0 EFLAGS: 00000246 RAX: ffff8880224b8000 RBX: 0000000000000000 RCX: ffffffff8a926638 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000b8f7a60 RBP: ffffc9000b8f7ad0 R08: dffffc0000000000 R09: fffff5200171ef4d R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200171ef4c R13: dffffc0000000000 R14: ffffffff8d171340 R15: 1ffff9200171ef4c tracepoint_probe_register_prio_may_exist+0x12c/0x190 kernel/tracepoint.c:483 bpf_raw_tp_link_attach+0x456/0x6b0 kernel/bpf/syscall.c:3372 bpf_raw_tracepoint_open+0x196/0x210 kernel/bpf/syscall.c:3399 __sys_bpf+0x4a7/0x6c0 kernel/bpf/syscall.c:5047 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline] __se_sys_bpf kernel/bpf/syscall.c:5107 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb867e7dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb868be40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fb867fabf80 RCX: 00007fb867e7dda9 RDX: 0000000000000010 RSI: 0000000020000540 RDI: 0000000000000011 RBP: 00007fb867eca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fb867fabf80 R15: 00007ffc3ab535d8 irq event stamp: 327 hardirqs last enabled at (326): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (326): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (327): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (327): [] _raw_spin_lock_irqsave+0xac/0x120 kernel/locking/spinlock.c:162 softirqs last enabled at (262): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (262): [] bpf_link_alloc_id kernel/bpf/syscall.c:2837 [inline] softirqs last enabled at (262): [] bpf_link_prime+0x76/0x1d0 kernel/bpf/syscall.c:2866 softirqs last disabled at (319): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (319): [] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:650 ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 00 e8 add %ch,%al 2: 18 94 4f f7 43 80 3c sbb %dl,0x3c8043f7(%rdi,%rcx,2) 9: 2c 00 sub $0x0,%al b: 4d 89 e7 mov %r12,%r15 e: 74 0d je 0x1d 10: 48 8d bc 24 a0 00 00 lea 0xa0(%rsp),%rdi 17: 00 18: e8 61 92 4f f7 call 0xf74f927e 1d: 48 8b 84 24 a0 00 00 mov 0xa0(%rsp),%rax 24: 00 25: f0 49 0f b1 1e lock cmpxchg %rbx,(%r14) * 2a: 4c 8b 64 24 30 mov 0x30(%rsp),%r12 <-- trapping instruction 2f: 0f 84 3d 01 00 00 je 0x172 35: 48 89 c3 mov %rax,%rbx 38: 43 80 3c 2f 00 cmpb $0x0,(%r15,%r13,1) 3d: 0f .byte 0xf 3e: 85 dd test %ebx,%ebp