============================= [ BUG: Invalid wait context ] 6.13.0-rc3-syzkaller-ga7c205120d33 #0 Not tainted ----------------------------- strace-static-x/5829 is trying to lock: ffffffff8eabdbf8 (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} 3 locks held by strace-static-x/5829: #0: ffff8880b863e8d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #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: __bpf_trace_run kernel/trace/bpf_trace.c:2364 [inline] #1: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2406 #2: ffff88807fe228e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline] #2: ffff88807fe228e0 (&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: 5829 Comm: strace-static-x Not tainted 6.13.0-rc3-syzkaller-ga7c205120d33 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 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:1947 [inline] bpf_get_stack_raw_tp+0x1a3/0x240 kernel/trace/bpf_trace.c:1937 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:2365 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2406 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 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 do_wait+0x2a5/0x550 kernel/exit.c:1696 kernel_wait4+0x2a7/0x3e0 kernel/exit.c:1850 __do_sys_wait4 kernel/exit.c:1878 [inline] __se_sys_wait4 kernel/exit.c:1874 [inline] __x64_sys_wait4+0x134/0x1e0 kernel/exit.c:1874 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: 0033:0x4d6ad6 Code: Unable to access opcode bytes at 0x4d6aac. RSP: 002b:00007ffea8abac88 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004d6ad6 RDX: 0000000040000000 RSI: 00007ffea8abacac RDI: 00000000ffffffff RBP: 0000000000000000 R08: 0000000000000017 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000028df2400 R13: 00007ffea8abacac R14: 0000000028decce0 R15: 000000000063f160