============================= [ BUG: Invalid wait context ] 6.13.0-rc7-syzkaller-00019-gc45323b7560e #0 Not tainted ----------------------------- syz.3.114/6332 is trying to lock: ffffffff8eabdbb8 (kernfs_rename_lock){....}-{3:3}, at: kernfs_path_from_node+0x92/0xb00 fs/kernfs/dir.c:229 other info that might help us debug this: context-{5:5} 5 locks held by syz.3.114/6332: #0: ffff88807bed3558 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1623 [inline] #0: ffff88807bed3558 (sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_sendmsg+0x22/0x50 net/ipv4/tcp.c:1357 #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: __ip_queue_xmit+0x63/0x1ef0 net/ipv4/ip_output.c:471 #2: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #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: __bpf_trace_run kernel/trace/bpf_trace.c:2361 [inline] #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2403 #4: ffff8880325476e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline] #4: ffff8880325476e0 (&mm->mmap_lock){++++}-{4:4}, at: stack_map_get_build_id_offset+0x431/0x870 kernel/bpf/stackmap.c:157 stack backtrace: CPU: 0 UID: 0 PID: 6332 Comm: syz.3.114 Not tainted 6.13.0-rc7-syzkaller-00019-gc45323b7560e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0xdd/0x130 kernel/locking/spinlock.c:236 kernfs_path_from_node+0x92/0xb00 fs/kernfs/dir.c:229 kernfs_path include/linux/kernfs.h:598 [inline] cgroup_path include/linux/cgroup.h:599 [inline] get_mm_memcg_path+0x95/0x350 mm/mmap_lock.c:59 __mmap_lock_do_trace_acquire_returned+0xfc/0x300 mm/mmap_lock.c:79 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline] mmap_read_trylock include/linux/mmap_lock.h:164 [inline] stack_map_get_build_id_offset+0x84d/0x870 kernel/bpf/stackmap.c:157 __bpf_get_stack+0x8da/0xad0 kernel/bpf/stackmap.c:483 ____bpf_get_stack kernel/bpf/stackmap.c:499 [inline] bpf_get_stack+0x33/0x50 kernel/bpf/stackmap.c:496 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1944 [inline] bpf_get_stack_raw_tp+0x1a3/0x240 kernel/trace/bpf_trace.c:1934 bpf_prog_ec3b2eefa702d8d3+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:2362 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2403 trace_tlb_flush+0x11c/0x140 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x77a/0xa70 context_switch kernel/sched/core.c:5353 [inline] __schedule+0x10c8/0x4c30 kernel/sched/core.c:6756 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6935 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6959 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 __local_bh_enable_ip+0x179/0x200 kernel/softirq.c:396 local_bh_enable include/linux/bottom_half.h:33 [inline] __icmp_send+0xda7/0x15c0 net/ipv4/icmp.c:788 icmp_send include/net/icmp.h:43 [inline] ip_fragment+0x181/0x220 net/ipv4/ip_output.c:591 ip_finish_output_gso net/ipv4/ip_output.c:287 [inline] __ip_finish_output+0x290/0x400 net/ipv4/ip_output.c:309 ip_local_out net/ipv4/ip_output.c:130 [inline] __ip_queue_xmit+0x12ca/0x1ef0 net/ipv4/ip_output.c:536 __tcp_transmit_skb+0x2582/0x3ba0 net/ipv4/tcp_output.c:1468 tcp_transmit_skb net/ipv4/tcp_output.c:1486 [inline] tcp_write_xmit+0x17b5/0x6bf0 net/ipv4/tcp_output.c:2829 __tcp_push_pending_frames+0x9b/0x360 net/ipv4/tcp_output.c:3012 tcp_sendmsg_locked+0x28c2/0x4f30 net/ipv4/tcp.c:1304 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1358 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:726 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x269/0x350 net/socket.c:2669 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: 0033:0x7fd6a898cd29 Code: Unable to access opcode bytes at 0x7fd6a898ccff. RSP: 002b:00007fd6a9793038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd6a8ba5fa0 RCX: 00007fd6a898cd29 RDX: 00000000000052cc RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007fd6a8a0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd6a8ba5fa0 R15: 00007fff0d9e0978