============================= [ BUG: Invalid wait context ] 6.13.0-rc3-syzkaller-00209-g499551201b5f #0 Not tainted ----------------------------- syz.1.28/6063 is trying to lock: ffff888030031bd8 (&sighand->siglock){-.-.}-{3:3}, at: __lock_task_sighand+0x149/0x2d0 kernel/signal.c:1379 other info that might help us debug this: context-{5:5} 4 locks held by syz.1.28/6063: #0: ffff88801261e0a8 (&ctx->uring_lock){+.+.}-{4:4}, at: __do_sys_io_uring_enter io_uring/io_uring.c:3394 [inline] #0: ffff88801261e0a8 (&ctx->uring_lock){+.+.}-{4:4}, at: __se_sys_io_uring_enter+0x2bd/0x33b0 io_uring/io_uring.c:3330 #1: ffff888056c668c0 (&acct->lock){+.+.}-{2:2}, at: io_wq_enqueue+0x1d1/0xb10 io_uring/io-wq.c:953 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2361 [inline] #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2403 #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: __lock_task_sighand+0x29/0x2d0 kernel/signal.c:1362 stack backtrace: CPU: 0 UID: 0 PID: 6063 Comm: syz.1.28 Not tainted 6.13.0-rc3-syzkaller-00209-g499551201b5f #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 __lock_task_sighand+0x149/0x2d0 kernel/signal.c:1379 lock_task_sighand include/linux/sched/signal.h:743 [inline] do_send_sig_info kernel/signal.c:1267 [inline] group_send_sig_info+0x274/0x310 kernel/signal.c:1418 bpf_send_signal_common+0x3c4/0x630 kernel/trace/bpf_trace.c:881 ____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline] bpf_send_signal+0x1d/0x30 kernel/trace/bpf_trace.c:884 bpf_prog_631417f49dd64198+0x25/0x4c 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:2362 [inline] bpf_trace_run2+0x2ee/0x540 kernel/trace/bpf_trace.c:2403 trace_contention_end+0x118/0x140 include/trace/events/lock.h:122 __pv_queued_spin_lock_slowpath+0xb7e/0xdb0 kernel/locking/qspinlock.c:557 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline] queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116 io_wq_enqueue+0x1d1/0xb10 io_uring/io-wq.c:953 io_queue_iowq+0x433/0x670 io_uring/io_uring.c:537 io_queue_async+0x3f9/0x4e0 io_uring/io_uring.c:1935 io_queue_sqe io_uring/io_uring.c:1957 [inline] io_submit_sqe io_uring/io_uring.c:2205 [inline] io_submit_sqes+0xe2b/0x1d60 io_uring/io_uring.c:2322 __do_sys_io_uring_enter io_uring/io_uring.c:3395 [inline] __se_sys_io_uring_enter+0x2c8/0x33b0 io_uring/io_uring.c:3330 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: 0033:0x7ffa35d85d29 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:00007ffa36c1a038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007ffa35f75fa0 RCX: 00007ffa35d85d29 RDX: 0000000000000000 RSI: 0000000000003516 RDI: 0000000000000009 RBP: 00007ffa35e01aa8 R08: 0000000000000000 R09: 00000000fffffdcf R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffa35f75fa0 R15: 00007fff537e1748