============================= [ BUG: Invalid wait context ] 6.13.0-rc1-next-20241205-syzkaller #0 Not tainted ----------------------------- syz.2.1516/11383 is trying to lock: ffff888031937a00 (&trie->lock){....}-{3:3}, at: trie_delete_elem+0x96/0x6a0 kernel/bpf/lpm_trie.c:462 other info that might help us debug this: context-{5:5} 2 locks held by syz.2.1516/11383: #0: ffff8880b862a718 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1050 #1: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #1: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2354 [inline] #1: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2396 stack backtrace: CPU: 0 UID: 0 PID: 11383 Comm: syz.2.1516 Not tainted 6.13.0-rc1-next-20241205-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline] check_wait_context kernel/locking/lockdep.c:4898 [inline] __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 trie_delete_elem+0x96/0x6a0 kernel/bpf/lpm_trie.c:462 bpf_prog_2c29ac5cdc6b1842+0x43/0x47 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2355 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2396 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x3ce/0x570 kernel/time/timer.c:662 internal_add_timer kernel/time/timer.c:687 [inline] __mod_timer+0xa0e/0xeb0 kernel/time/timer.c:1182 sk_reset_timer+0x23/0xc0 net/core/sock.c:3519 tipc_sk_finish_conn+0x16b/0x820 net/tipc/socket.c:1671 tipc_socketpair+0x25c/0x4b0 net/tipc/socket.c:3347 __sys_socketpair+0x40f/0x720 net/socket.c:1780 __do_sys_socketpair net/socket.c:1816 [inline] __se_sys_socketpair net/socket.c:1813 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1813 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f680477ff19 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:00007f68054ee058 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007f6804945fa0 RCX: 00007f680477ff19 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000000000000001e RBP: 00007f68047f3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6804945fa0 R15: 00007fff808b7ea8