===================================== WARNING: bad unlock balance detected! 6.16.0-next-20250801 #1 Not tainted ------------------------------------- syz-executor.5/7850 is trying to release lock (&sighand->siglock) at: [] copy_process+0x5f89/0x73e0 but there are no more locks to release! other info that might help us debug this: 1 lock held by syz-executor.5/7850: #0: ffffffff85c5c690 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x418a/0x73e0 stack backtrace: CPU: 1 UID: 0 PID: 7850 Comm: syz-executor.5 Not tainted 6.16.0-next-20250801 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xca/0x120 print_unlock_imbalance_bug+0x118/0x130 lock_release+0x208/0x290 _raw_spin_unlock+0x16/0x40 copy_process+0x5f89/0x73e0 kernel_clone+0xea/0x7f0 __do_sys_clone+0xce/0x120 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f569f83ef41 Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00 RSP: 002b:00007ffe61101438 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f569cdb3700 RCX: 00007f569f83ef41 RDX: 00007f569cdb39d0 RSI: 00007f569cdb32f0 RDI: 00000000003d0f00 RBP: 00007ffe61101670 R08: 00007f569cdb3700 R09: 00007f569cdb3700 R10: 00007f569cdb39d0 R11: 0000000000000206 R12: 00007ffe611014ee R13: 00007ffe611014ef R14: 00007f569cdb3300 R15: 0000000000022000 BUG: sleeping function called from invalid context at kernel/nsproxy.c:233 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 7850, name: syz-executor.5 preempt_count: 7ffffffe, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. CPU: 1 UID: 0 PID: 7850 Comm: syz-executor.5 Not tainted 6.16.0-next-20250801 #1 PREEMPT(voluntary) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 __might_resched+0x2f3/0x510 switch_task_namespaces+0x2d/0x100 copy_process+0x2756/0x73e0 kernel_clone+0xea/0x7f0 __do_sys_clone+0xce/0x120 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f569f83ef41 Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00 RSP: 002b:00007ffe61101438 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f569cdb3700 RCX: 00007f569f83ef41 RDX: 00007f569cdb39d0 RSI: 00007f569cdb32f0 RDI: 00000000003d0f00 RBP: 00007ffe61101670 R08: 00007f569cdb3700 R09: 00007f569cdb3700 R10: 00007f569cdb39d0 R11: 0000000000000206 R12: 00007ffe611014ee R13: 00007ffe611014ef R14: 00007f569cdb3300 R15: 0000000000022000 BUG: scheduling while atomic: syz-executor.5/7850/0x7fffffff INFO: lockdep is turned off. Modules linked in: CPU: 1 UID: 0 PID: 7850 Comm: syz-executor.5 Tainted: G W 6.16.0-next-20250801 #1 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0xfa/0x120 __schedule_bug+0xb9/0x100 __schedule+0x24f3/0x3590 schedule+0xdb/0x390 exit_to_user_mode_loop+0x69/0x100 do_syscall_64+0x2f7/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f569f83ef41 Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00 RSP: 002b:00007ffe61101438 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: fffffffffffffff4 RBX: 00007f569cdb3700 RCX: 00007f569f83ef41 RDX: 00007f569cdb39d0 RSI: 00007f569cdb32f0 RDI: 00000000003d0f00 RBP: 00007ffe61101670 R08: 00007f569cdb3700 R09: 00007f569cdb3700 R10: 00007f569cdb39d0 R11: 0000000000000206 R12: 00007ffe611014ee R13: 00007ffe611014ef R14: 00007f569cdb3300 R15: 0000000000022000 loop1: detected capacity change from 0 to 4096 EXT4-fs (loop1): VFS: Can't find ext4 filesystem