BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 11743, name: syz.3.1778 preempt_count: 1, expected: 0 RCU nest depth: 1, expected: 1 3 locks held by syz.3.1778/11743: #0: ffffffff8d3aa400 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #0: ffffffff8d3aa400 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #0: ffffffff8d3aa400 (rcu_read_lock){....}-{1:3}, at: bpf_test_timer_enter+0x1e/0x2b0 net/bpf/test_run.c:40 #1: ffffffff8d24aa40 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0xa1/0x540 kernel/softirq.c:163 #2: ffff88803c37eac0 (&stab->lock){+...}-{3:3}, at: spin_lock_bh include/linux/spinlock_rt.h:88 [inline] #2: ffff88803c37eac0 (&stab->lock){+...}-{3:3}, at: __sock_map_delete net/core/sock_map.c:421 [inline] #2: ffff88803c37eac0 (&stab->lock){+...}-{3:3}, at: sock_map_delete_elem+0xb7/0x170 net/core/sock_map.c:452 Preemption disabled at: [] bpf_test_timer_enter+0x158/0x2b0 net/bpf/test_run.c:42 CPU: 1 UID: 0 PID: 11743 Comm: syz.3.1778 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 __might_resched+0x44b/0x5d0 kernel/sched/core.c:8925 __rt_spin_lock kernel/locking/spinlock_rt.c:48 [inline] rt_spin_lock+0xc7/0x3e0 kernel/locking/spinlock_rt.c:57 spin_lock_bh include/linux/spinlock_rt.h:88 [inline] __sock_map_delete net/core/sock_map.c:421 [inline] sock_map_delete_elem+0xb7/0x170 net/core/sock_map.c:452 bpf_prog_b6484cd2cee17f91+0x46/0x4e bpf_dispatcher_nop_func include/linux/bpf.h:1350 [inline] __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run include/linux/filter.h:728 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:745 [inline] bpf_flow_dissect+0x225/0x720 net/core/flow_dissector.c:1024 bpf_prog_test_run_flow_dissector+0x37c/0x5c0 net/bpf/test_run.c:1425 bpf_prog_test_run+0x2cd/0x340 kernel/bpf/syscall.c:4673 __sys_bpf+0x562/0x860 kernel/bpf/syscall.c:6152 __do_sys_bpf kernel/bpf/syscall.c:6244 [inline] __se_sys_bpf kernel/bpf/syscall.c:6242 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6242 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f87b368eec9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f87b18ee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f87b38e5fa0 RCX: 00007f87b368eec9 RDX: 0000000000000050 RSI: 0000200000000000 RDI: 000000000000000a RBP: 00007f87b3711f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f87b38e6038 R14: 00007f87b38e5fa0 R15: 00007ffde8519cd8 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(this_cpu_read(softirq_ctrl.cnt)) WARNING: CPU: 0 PID: 11743 at kernel/softirq.c:176 __local_bh_disable_ip+0x3d9/0x540 kernel/softirq.c:176 Modules linked in: CPU: 0 UID: 0 PID: 11743 Comm: syz.3.1778 Tainted: G W syzkaller #0 PREEMPT_{RT,(full)} Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__local_bh_disable_ip+0x3d9/0x540 kernel/softirq.c:176 Code: 0f b6 04 28 84 c0 0f 85 56 01 00 00 83 3d 52 9b 32 0d 00 75 19 90 48 c7 c7 c0 b7 c9 8a 48 c7 c6 00 b8 c9 8a e8 f8 5f fe ff 90 <0f> 0b 90 90 90 e9 7b ff ff ff 90 0f 0b 90 e9 71 fe ff ff e8 cf 84 RSP: 0018:ffffc90006507940 EFLAGS: 00010246 RAX: cd55b392aaffe800 RBX: 1ffff92000ca0f30 RCX: 0000000000080000 RDX: ffffc9000de11000 RSI: 0000000000023a87 RDI: 0000000000023a88 RBP: ffffc90006507a60 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: ffffed101710487b R12: ffff88801bfc1e00 R13: dffffc0000000000 R14: ffff88801bfc294c R15: 1ffff110037f8529 FS: 00007f87b18ee6c0(0000) GS:ffff888127020000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fef19807d60 CR3: 00000000563d8000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: local_bh_disable include/linux/bottom_half.h:20 [inline] spin_lock_bh include/linux/spinlock_rt.h:87 [inline] __sock_map_delete net/core/sock_map.c:421 [inline] sock_map_delete_elem+0xaf/0x170 net/core/sock_map.c:452 bpf_prog_b6484cd2cee17f91+0x46/0x4e bpf_dispatcher_nop_func include/linux/bpf.h:1350 [inline] __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run include/linux/filter.h:728 [inline] bpf_prog_run_pin_on_cpu include/linux/filter.h:745 [inline] bpf_flow_dissect+0x225/0x720 net/core/flow_dissector.c:1024 bpf_prog_test_run_flow_dissector+0x37c/0x5c0 net/bpf/test_run.c:1425 bpf_prog_test_run+0x2cd/0x340 kernel/bpf/syscall.c:4673 __sys_bpf+0x562/0x860 kernel/bpf/syscall.c:6152 __do_sys_bpf kernel/bpf/syscall.c:6244 [inline] __se_sys_bpf kernel/bpf/syscall.c:6242 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6242 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f87b368eec9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f87b18ee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f87b38e5fa0 RCX: 00007f87b368eec9 RDX: 0000000000000050 RSI: 0000200000000000 RDI: 000000000000000a RBP: 00007f87b3711f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f87b38e6038 R14: 00007f87b38e5fa0 R15: 00007ffde8519cd8