============================= [ BUG: Invalid wait context ] 6.12.0-rc5-next-20241101-syzkaller #0 Not tainted ----------------------------- syz.0.152/6585 is trying to lock: ffffffff8e9ba458 (map_idr_lock){+...}-{3:3}, at: bpf_map_free_id kernel/bpf/syscall.c:468 [inline] ffffffff8e9ba458 (map_idr_lock){+...}-{3:3}, at: bpf_map_put+0x9a/0x380 kernel/bpf/syscall.c:902 other info that might help us debug this: context-{5:5} 2 locks held by syz.0.152/6585: #0: ffffffff8e939ee0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e939ee0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e939ee0 (rcu_read_lock){....}-{1:3}, at: bpf_fd_htab_map_update_elem+0x134/0x390 kernel/bpf/hashtab.c:2569 #1: ffff88806626c3c8 (&htab->lockdep_key){....}-{2:2}, at: htab_lock_bucket+0x1a4/0x370 kernel/bpf/hashtab.c:167 stack backtrace: CPU: 1 UID: 0 PID: 6585 Comm: syz.0.152 Not tainted 6.12.0-rc5-next-20241101-syzkaller #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 bpf_map_free_id kernel/bpf/syscall.c:468 [inline] bpf_map_put+0x9a/0x380 kernel/bpf/syscall.c:902 htab_put_fd_value kernel/bpf/hashtab.c:911 [inline] alloc_htab_elem+0x1f5/0xa80 kernel/bpf/hashtab.c:1021 htab_map_update_elem+0x448/0xe00 kernel/bpf/hashtab.c:1172 bpf_fd_htab_map_update_elem+0x1fb/0x390 kernel/bpf/hashtab.c:2570 bpf_map_update_value+0x2f2/0x5c0 kernel/bpf/syscall.c:274 map_update_elem+0x51a/0x6f0 kernel/bpf/syscall.c:1726 __sys_bpf+0x76f/0x810 kernel/bpf/syscall.c:5742 __do_sys_bpf kernel/bpf/syscall.c:5861 [inline] __se_sys_bpf kernel/bpf/syscall.c:5859 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5859 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: 0033:0x7f367777e719 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:00007f3678609038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f3677935f80 RCX: 00007f367777e719 RDX: 0000000000000020 RSI: 0000000020000200 RDI: 0000000000000002 RBP: 00007f36777f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3677935f80 R15: 00007ffec6034338