task_struct             3762KB       5084KB
cred                     126KB        344KB
anon_vma_chain           109KB        291KB
anon_vma                 123KB        471KB
pid                      146KB        398KB
Acpi-Operand             195KB        328KB
Acpi-ParseExt             21KB         39KB
Acpi-Parse                19KB         39KB
Acpi-State                 9KB         27KB
Acpi-Namespace            31KB         44KB
numa_policy                3KB          4KB
perf_event                15KB         31KB
trace_event_file         577KB        580KB
ftrace_event_field       1118KB       1122KB
pool_workqueue          2030KB       2112KB
task_group                36KB         48KB
maple_node               450KB       1632KB
mm_struct                153KB        637KB
vmap_area                420KB       1140KB
debug_objects_cache      14643KB      19410KB
page->ptl                 26KB        129KB
kmalloc-cg-8k         174800KB     174896KB
kmalloc-cg-4k         212304KB     213088KB
kmalloc-cg-2k         151012KB     151792KB
kmalloc-cg-1k          37544KB      38176KB
kmalloc-cg-512          8082KB       8272KB
kmalloc-cg-256          5720KB       5728KB
kmalloc-cg-128          2175KB       2180KB
kmalloc-cg-64            545KB        580KB
kmalloc-cg-32            284KB        316KB
kmalloc-cg-16              6KB         16KB
kmalloc-cg-8             241KB        244KB
kmalloc-cg-192            53KB         60KB
kmalloc-cg-96            485KB        528KB
kmalloc-8k            291472KB     291680KB
kmalloc-4k             73952KB      74080KB
kmalloc-2k             41288KB      46656KB
kmalloc-1k             21422KB      23680KB
kmalloc-512            53304KB      53312KB
kmalloc-256            48815KB      48828KB
kmalloc-128             6996KB       7064KB
kmalloc-64             22322KB      22484KB
kmalloc-32             21413KB      21416KB
kmalloc-16               992KB       1132KB
kmalloc-8               8432KB       8476KB
kmalloc-192            12110KB      12220KB
kmalloc-96              1766KB       2260KB
kmem_cache_node          219KB        220KB
kmem_cache               182KB        226KB
Out of memory and no killable processes...
Kernel panic - not syncing: System is deadlocked on memory
CPU: 2 UID: 0 PID: 57 Comm: kworker/2:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: mld mld_dad_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 vpanic+0x552/0x970 kernel/panic.c:651
 panic+0xd1/0xe0 kernel/panic.c:788
 out_of_memory.cold+0xa2/0x170 mm/oom_kill.c:1166
 __alloc_pages_may_oom mm/page_alloc.c:4116 [inline]
 __alloc_pages_slowpath mm/page_alloc.c:4967 [inline]
 __alloc_frozen_pages_noprof+0x24c2/0x2dc0 mm/page_alloc.c:5317
 alloc_slab_page mm/slub.c:3266 [inline]
 allocate_slab mm/slub.c:3388 [inline]
 new_slab+0x1e2/0x640 mm/slub.c:3426
 refill_objects+0xe3/0x410 mm/slub.c:7310
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x376/0x680 mm/slub.c:4675
 alloc_from_pcs mm/slub.c:4773 [inline]
 slab_alloc_node mm/slub.c:4905 [inline]
 __do_kmalloc_node mm/slub.c:5333 [inline]
 __kmalloc_node_track_caller_noprof+0x679/0x830 mm/slub.c:5471
 kmalloc_reserve+0xe8/0x350 net/core/skbuff.c:637
 __alloc_skb+0x185/0x710 net/core/skbuff.c:715
 alloc_skb include/linux/skbuff.h:1384 [inline]
 mld_newpack.isra.0+0x18e/0xa20 net/ipv6/mcast.c:1789
 add_grhead+0x299/0x340 net/ipv6/mcast.c:1900
 add_grec+0x1389/0x1930 net/ipv6/mcast.c:2039
 mld_send_initial_cr+0x156/0x320 net/ipv6/mcast.c:2284
 mld_dad_work+0x32/0x1f0 net/ipv6/mcast.c:2310
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..