R13: 00007fffea055420 R14: 00007f88aeb2ff60 R15: 0000000000164e96 memory: usage 307200kB, limit 307200kB, failcnt 1365 ===================================== swap: usage 0kB, limit 9007199254740988kB, failcnt 0 WARNING: bad unlock balance detected! 6.16.0-rc7-next-20250725 #1 Not tainted ------------------------------------- syz-executor.0/11799 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.0/11799: #0: ffffffff85c5df90 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x418a/0x73e0 stack backtrace: CPU: 0 UID: 0 PID: 11799 Comm: syz-executor.0 Not tainted 6.16.0-rc7-next-20250725 #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: 0033:0x7fc67e190f41 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:00007ffc5e9f3ab8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fc67b705700 RCX: 00007fc67e190f41 RDX: 00007fc67b7059d0 RSI: 00007fc67b7052f0 RDI: 00000000003d0f00 RBP: 00007ffc5e9f3cf0 R08: 00007fc67b705700 R09: 00007fc67b705700 R10: 00007fc67b7059d0 R11: 0000000000000206 R12: 00007ffc5e9f3b6e R13: 00007ffc5e9f3b6f R14: 00007fc67b705300 R15: 0000000000022000 BUG: sleeping function called from invalid context at kernel/nsproxy.c:233 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 11799, name: syz-executor.0 preempt_count: 7ffffffe, expected: 0 RCU nest depth: 0, expected: 0 INFO: lockdep is turned off. CPU: 0 UID: 0 PID: 11799 Comm: syz-executor.0 Not tainted 6.16.0-rc7-next-20250725 #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: 0033:0x7fc67e190f41 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:00007ffc5e9f3ab8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fc67b705700 RCX: 00007fc67e190f41 RDX: 00007fc67b7059d0 RSI: 00007fc67b7052f0 RDI: 00000000003d0f00 RBP: 00007ffc5e9f3cf0 R08: 00007fc67b705700 R09: 00007fc67b705700 R10: 00007fc67b7059d0 R11: 0000000000000206 R12: 00007ffc5e9f3b6e R13: 00007ffc5e9f3b6f R14: 00007fc67b705300 R15: 0000000000022000 BUG: scheduling while atomic: syz-executor.0/11799/0x7fffffff INFO: lockdep is turned off. Modules linked in: CPU: 0 UID: 0 PID: 11799 Comm: syz-executor.0 Tainted: G W 6.16.0-rc7-next-20250725 #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+0x250d/0x35b0 schedule+0xdb/0x390 exit_to_user_mode_loop+0x69/0x100 do_syscall_64+0x2f7/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc67e190f41 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:00007ffc5e9f3ab8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: fffffffffffffff4 RBX: 00007fc67b705700 RCX: 00007fc67e190f41 RDX: 00007fc67b7059d0 RSI: 00007fc67b7052f0 RDI: 00000000003d0f00 RBP: 00007ffc5e9f3cf0 R08: 00007fc67b705700 R09: 00007fc67b705700 R10: 00007fc67b7059d0 R11: 0000000000000206 R12: 00007ffc5e9f3b6e R13: 00007ffc5e9f3b6f R14: 00007fc67b705300 R15: 0000000000022000 Memory cgroup stats for /syz7: anon 1466368 file 308297728 kernel 4804608 kernel_stack 557056 pagetables 2170880 sec_pagetables 0 percpu 1152 sock 0 vmalloc 0 shmem 308293632 file_mapped 0 file_dirty 0 file_writeback 0 swapcached 0 inactive_anon 309678080 active_anon 81920 inactive_file 0 active_file 4096 unevictable 0 slab_reclaimable 966304 slab_unreclaimable 1122776 slab 2089080 workingset_refault_anon 0 workingset_refault_file 1 workingset_activate_anon 0 workingset_activate_file 0 workingset_restore_anon 0 workingset_restore_file 0 workingset_nodereclaim 0 pgdemote_kswapd 0 pgdemote_direct 0 pgdemote_khugepaged 0 pgdemote_proactive 0 pgscan 1979 pgsteal 77 pswpin 0 pswpout 0 pgscan_kswapd 1 pgscan_direct 1978 pgscan_khugepaged 0 pgscan_proactive 0 pgsteal_kswapd 0 pgsteal_direct 77 pgsteal_khugepaged 0 pgsteal_proactive 0 pgfault 89384 pgmajfault 3 pgrefill 2246 pgactivate 2338 pgdeactivate 2246 pglazyfree 0 pglazyfreed 0 swpin_zero 0 swpout_zero 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/syz7,task_memcg=/syz7,task=syz-executor.7,pid=11800,uid=0 Memory cgroup out of memory: Killed process 11800 (syz-executor.7) total-vm:93420kB, anon-rss:300kB, file-rss:35628kB, shmem-rss:0kB, UID:0 pgtables:128kB oom_score_adj:1000 EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed EXT4-fs warning (device sda): ext4_resize_begin:81: There are errors in the filesystem, so online resizing is not allowed syz-executor.7 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 CPU: 1 UID: 0 PID: 11811 Comm: syz-executor.7 Tainted: G W 6.16.0-rc7-next-20250725 #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 dump_header+0x107/0x950 oom_kill_process+0x278/0xa00 out_of_memory+0x34b/0x1690 mem_cgroup_out_of_memory+0x164/0x190 try_charge_memcg+0x81f/0xf30 charge_memcg+0x7b/0x290 __mem_cgroup_charge+0x28/0x90 do_wp_page+0x56e/0x31f0 __handle_mm_fault+0xde1/0x30f0 handle_mm_fault+0x2c3/0x900 do_user_addr_fault+0x4fa/0xeb0 exc_page_fault+0xb0/0x180 asm_exc_page_fault+0x26/0x30 RIP: 0033:0x7f88ae9c7ecd Code: 0c 48 89 df 41 83 c6 01 e8 20 f6 ff ff 48 83 c3 20 49 39 df 75 df 4c 8b 2d f0 14 0a 01 44 89 75 08 8b 05 36 41 16 00 83 c0 01 <89> 05 2d 41 16 00 41 89 45 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e RSP: 002b:00007fffea055290 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 00007f88aeb2ff60 RCX: 0000000000000023 RDX: 0000001b2d6200ac RSI: ffffffff84bb02cc RDI: 0000000064504024 RBP: 0000001b2d620014 R08: 0000001b2e620000 R09: 0000001b2d62001c R10: 0000000000000024 R11: 0000000064504028 R12: 00007f88aeb2ff60 R13: 0000001b2d620000 R14: 00007f88aeb2ff60 R15: 00000000001671ed memory: usage 307200kB, limit 307200kB, failcnt 1392 swap: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz7: anon 1503232 file 308297728 kernel 4771840 kernel_stack 557056 pagetables 2162688 sec_pagetables 0 percpu 1024 sock 0 vmalloc 0 shmem 308293632 file_mapped 0 file_dirty 0 file_writeback 0 swapcached 0 inactive_anon 309714944 active_anon 81920 inactive_file 4096 active_file 0 unevictable 0 slab_reclaimable 966304 slab_unreclaimable 1098760 slab 2065064 workingset_refault_anon 0 workingset_refault_file 1 workingset_activate_anon 0 workingset_activate_file 0 workingset_restore_anon 0 workingset_restore_file 0 workingset_nodereclaim 0 pgdemote_kswapd 0 pgdemote_direct 0 pgdemote_khugepaged 0 pgdemote_proactive 0 pgscan 2035 pgsteal 77 pswpin 0 pswpout 0 pgscan_kswapd 1 pgscan_direct 2034 pgscan_khugepaged 0 pgscan_proactive 0 pgsteal_kswapd 0 pgsteal_direct 77 pgsteal_khugepaged 0 pgsteal_proactive 0 pgfault 89440 pgmajfault 3 pgrefill 2305 pgactivate 2396 pgdeactivate 2305 pglazyfree 0 pglazyfreed 0 swpin_zero 0 swpout_zero 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/syz7,task_memcg=/syz7,task=syz-executor.7,pid=11811,uid=0 Memory cgroup out of memory: Killed process 11811 (syz-executor.7) total-vm:93420kB, anon-rss:300kB, file-rss:35628kB, shmem-rss:0kB, UID:0 pgtables:128kB oom_score_adj:1000 syz-executor.0 invoked oom-killer: gfp_mask=0xcc0(GFP_KERNEL), order=0, oom_score_adj=1000 CPU: 0 UID: 0 PID: 11809 Comm: syz-executor.0 Tainted: G W 6.16.0-rc7-next-20250725 #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 dump_header+0x107/0x950 oom_kill_process+0x278/0xa00 out_of_memory+0x34b/0x1690 mem_cgroup_out_of_memory+0x164/0x190 try_charge_memcg+0x81f/0xf30 charge_memcg+0x7b/0x290 __mem_cgroup_charge+0x28/0x90 do_wp_page+0x56e/0x31f0 __handle_mm_fault+0xde1/0x30f0 handle_mm_fault+0x2c3/0x900 do_user_addr_fault+0x4fa/0xeb0 exc_page_fault+0xb0/0x180 asm_exc_page_fault+0x26/0x30 RIP: 0033:0x7fc67e13aecd Code: 0c 48 89 df 41 83 c6 01 e8 20 f6 ff ff 48 83 c3 20 49 39 df 75 df 4c 8b 2d f0 14 0a 01 44 89 75 08 8b 05 36 41 16 00 83 c0 01 <89> 05 2d 41 16 00 41 89 45 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e RSP: 002b:00007ffc5e9f3b60 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 00007fc67e2a2f60 RCX: 0000000000000023 RDX: 0000001b2cc200ac RSI: ffffffff84bb02cc RDI: 0000000064504024 RBP: 0000001b2cc20014 R08: 0000001b2dc20000 R09: 0000001b2cc2001c R10: 0000000000000024 R11: 0000000064504028 R12: 00007fc67e2a2f60 R13: 0000001b2cc20000 R14: 00007fc67e2a2f60 R15: 00000000001671f7 memory: usage 307200kB, limit 307200kB, failcnt 1835 swap: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: anon 1134592 file 309952512 kernel 3485696 kernel_stack 360448 pagetables 1372160 sec_pagetables 0 percpu 640 sock 0 vmalloc 0 shmem 309952512 file_mapped 0 file_dirty 0 file_writeback 0 swapcached 0 inactive_anon 310886400 active_anon 200704 inactive_file 0 active_file 0 unevictable 0 slab_reclaimable 973912 slab_unreclaimable 789936 slab 1763848 workingset_refault_anon 0 workingset_refault_file 0 workingset_activate_anon 0 workingset_activate_file 0 workingset_restore_anon 0 workingset_restore_file 0 workingset_nodereclaim 0 pgdemote_kswapd 0 pgdemote_direct 0 pgdemote_khugepaged 0 pgdemote_proactive 0 pgscan 367 pgsteal 76 pswpin 0 pswpout 0 pgscan_kswapd 0 pgscan_direct 367 pgscan_khugepaged 0 pgscan_proactive 0 pgsteal_kswapd 0 pgsteal_direct 76 pgsteal_khugepaged 0 pgsteal_proactive 0 pgfault 89317 pgmajfault 0 pgrefill 275 pgactivate 365 pgdeactivate 278 pglazyfree 0 pglazyfreed 0 swpin_zero 0 swpout_zero 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/syz0,task_memcg=/syz0,task=syz-executor.0,pid=11809,uid=0 Memory cgroup out of memory: Killed process 11809 (syz-executor.0) total-vm:93420kB, anon-rss:300kB, file-rss:35616kB, shmem-rss:0kB, UID:0 pgtables:128kB oom_score_adj:1000