============================= [ BUG: Invalid wait context ] 6.13.0-rc1-syzkaller-00229-g3dd002f20098 #0 Not tainted ----------------------------- syz.2.626/7854 is trying to lock: ffff888031324a00 (&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} 3 locks held by syz.2.626/7854: #0: ffff888021699258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1617 [inline] #0: ffff888021699258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: bt_sock_stream_recvmsg+0xef/0x1670 net/bluetooth/af_bluetooth.c:417 #1: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #2: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #2: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2350 [inline] #2: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x244/0x590 kernel/trace/bpf_trace.c:2394 stack backtrace: CPU: 0 UID: 0 PID: 7854 Comm: syz.2.626 Not tainted 6.13.0-rc1-syzkaller-00229-g3dd002f20098 #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_1c0c44170264bb34+0x46/0x4a 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:2351 [inline] bpf_trace_run4+0x334/0x590 kernel/trace/bpf_trace.c:2394 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x22bc/0x4c30 kernel/sched/core.c:6753 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:bt_sock_stream_recvmsg+0x233/0x1670 Code: 00 41 83 e4 02 31 c0 48 89 44 24 68 31 ff 44 89 a4 24 90 00 00 00 44 89 e6 e8 f9 ac e0 f6 49 8d 87 9c 01 00 00 48 89 44 24 58 <49> 8d 87 c3 03 00 00 48 89 44 24 70 48 8d 84 24 00 01 00 00 48 8d RSP: 0018:ffffc9000c69f6a0 EFLAGS: 00000297 RAX: ffff88802169919c RBX: ffff888021699190 RCX: 0000000000080000 RDX: ffff88805b4a9e00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000c69f850 R08: ffffffff8abec967 R09: 1ffffffff2857137 R10: dffffc0000000000 R11: fffffbfff2857138 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000001 R15: ffff888021699000 rfcomm_sock_recvmsg+0xea/0x280 net/bluetooth/rfcomm/sock.c:606 sock_recvmsg_nosec+0x18e/0x1d0 net/socket.c:1033 ____sys_recvmsg+0x3cd/0x480 net/socket.c:2801 ___sys_recvmsg net/socket.c:2845 [inline] do_recvmmsg+0x426/0xab0 net/socket.c:2940 __sys_recvmmsg net/socket.c:3014 [inline] __do_sys_recvmmsg net/socket.c:3037 [inline] __se_sys_recvmmsg net/socket.c:3030 [inline] __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3030 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: 0033:0x7fedb0d7ff19 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:00007fedb1bc2058 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fedb0f45fa0 RCX: 00007fedb0d7ff19 RDX: 000000000400023c RSI: 00000000200055c0 RDI: 0000000000000007 RBP: 00007fedb0df3cc8 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000319c R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fedb0f45fa0 R15: 00007ffc77e824d8 ---------------- Code disassembly (best guess): 0: 00 41 83 add %al,-0x7d(%rcx) 3: e4 02 in $0x2,%al 5: 31 c0 xor %eax,%eax 7: 48 89 44 24 68 mov %rax,0x68(%rsp) c: 31 ff xor %edi,%edi e: 44 89 a4 24 90 00 00 mov %r12d,0x90(%rsp) 15: 00 16: 44 89 e6 mov %r12d,%esi 19: e8 f9 ac e0 f6 call 0xf6e0ad17 1e: 49 8d 87 9c 01 00 00 lea 0x19c(%r15),%rax 25: 48 89 44 24 58 mov %rax,0x58(%rsp) * 2a: 49 8d 87 c3 03 00 00 lea 0x3c3(%r15),%rax <-- trapping instruction 31: 48 89 44 24 70 mov %rax,0x70(%rsp) 36: 48 8d 84 24 00 01 00 lea 0x100(%rsp),%rax 3d: 00 3e: 48 rex.W 3f: 8d .byte 0x8d