============================= [ BUG: Invalid wait context ] 6.13.0-syzkaller-00918-g95ec54a420b8 #0 Not tainted ----------------------------- syz-executor/8403 is trying to lock: ffffffff8e423598 (kernfs_rename_lock){....}-{3:3}, at: kernfs_path_from_node+0x29/0x60 fs/kernfs/dir.c:229 other info that might help us debug this: context-{5:5} 6 locks held by syz-executor/8403: #0: ffffffff8e2d8730 (dup_mmap_sem){++++}-{0:0}, at: dup_mm kernel/fork.c:1690 [inline] #0: ffffffff8e2d8730 (dup_mmap_sem){++++}-{0:0}, at: copy_mm kernel/fork.c:1743 [inline] #0: ffffffff8e2d8730 (dup_mmap_sem){++++}-{0:0}, at: copy_process+0x673e/0x8e50 kernel/fork.c:2394 #1: ffff88802799bc60 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:122 [inline] #1: ffff88802799bc60 (&mm->mmap_lock){++++}-{4:4}, at: dup_mmap kernel/fork.c:642 [inline] #1: ffff88802799bc60 (&mm->mmap_lock){++++}-{4:4}, at: dup_mm kernel/fork.c:1691 [inline] #1: ffff88802799bc60 (&mm->mmap_lock){++++}-{4:4}, at: copy_mm kernel/fork.c:1743 [inline] #1: ffff88802799bc60 (&mm->mmap_lock){++++}-{4:4}, at: copy_process+0x67a1/0x8e50 kernel/fork.c:2394 #2: ffff88807eedc620 (&mm->mmap_lock/1){+.+.}-{4:4}, at: mmap_write_lock_nested include/linux/mmap_lock.h:113 [inline] #2: ffff88807eedc620 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mmap kernel/fork.c:649 [inline] #2: ffff88807eedc620 (&mm->mmap_lock/1){+.+.}-{4:4}, at: dup_mm kernel/fork.c:1691 [inline] #2: ffff88807eedc620 (&mm->mmap_lock/1){+.+.}-{4:4}, at: copy_mm kernel/fork.c:1743 [inline] #2: ffff88807eedc620 (&mm->mmap_lock/1){+.+.}-{4:4}, at: copy_process+0x6801/0x8e50 kernel/fork.c:2394 #3: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #3: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: ___pte_offset_map+0x42/0x540 mm/pgtable-generic.c:287 #4: ffff8880b873ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598 #5: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #5: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #5: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2361 [inline] #5: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1c2/0x590 kernel/trace/bpf_trace.c:2403 stack backtrace: CPU: 1 UID: 0 PID: 8403 Comm: syz-executor Not tainted 6.13.0-syzkaller-00918-g95ec54a420b8 #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+0x116/0x1f0 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+0x878/0x3c40 kernel/locking/lockdep.c:5176 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline] _raw_read_lock_irqsave+0x74/0x90 kernel/locking/spinlock.c:236 kernfs_path_from_node+0x29/0x60 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.constprop.0+0xb7/0x3d0 mm/mmap_lock.c:59 __mmap_lock_do_trace_acquire_returned.part.0+0x95/0x2d0 mm/mmap_lock.c:79 __mmap_lock_do_trace_acquire_returned+0x33/0x40 include/trace/events/mmap_lock.h:48 __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+0x535/0x6f0 kernel/bpf/stackmap.c:157 __bpf_get_stack+0x308/0xa20 kernel/bpf/stackmap.c:483 ____bpf_get_stack kernel/bpf/stackmap.c:499 [inline] bpf_get_stack+0x32/0x40 kernel/bpf/stackmap.c:496 ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1944 [inline] bpf_get_stack_raw_tp+0x124/0x160 kernel/trace/bpf_trace.c:1934 bpf_prog_ec3b2eefa702d8d3+0x43/0x4b 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+0x234/0x590 kernel/trace/bpf_trace.c:2403 __bpf_trace_tlb_flush+0xd2/0x110 include/trace/events/tlb.h:38 trace_tlb_flush+0xf7/0x180 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x395/0xb10 arch/x86/mm/tlb.c:638 context_switch kernel/sched/core.c:5353 [inline] __schedule+0xc6f/0x5ad0 kernel/sched/core.c:6756 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6935 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] copy_pte_range mm/memory.c:1200 [inline] copy_pmd_range mm/memory.c:1261 [inline] copy_pud_range mm/memory.c:1298 [inline] copy_p4d_range mm/memory.c:1322 [inline] copy_page_range+0x1e27/0x5790 mm/memory.c:1420 dup_mmap kernel/fork.c:748 [inline] dup_mm kernel/fork.c:1691 [inline] copy_mm kernel/fork.c:1743 [inline] copy_process+0x7ef5/0x8e50 kernel/fork.c:2394 kernel_clone+0xfd/0x960 kernel/fork.c:2806 __do_sys_clone+0xba/0x100 kernel/fork.c:2949 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f99c057c593 Code: Unable to access opcode bytes at 0x7f99c057c569. RSP: 002b:00007ffdbd6bc618 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f99c057c593 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 000055557ca4a7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 00000000000edf8a R14: 00007ffdbd6bc7a0 R15: 00000000000001fe