task_struct 4952KB 5622KB cred 136KB 344KB anon_vma_chain 307KB 385KB anon_vma 329KB 438KB pid 141KB 351KB Acpi-Operand 195KB 324KB Acpi-ParseExt 21KB 35KB Acpi-Parse 6KB 19KB Acpi-State 16KB 31KB Acpi-Namespace 31KB 52KB numa_policy 8KB 11KB perf_event 15KB 31KB trace_event_file 540KB 540KB ftrace_event_field 1026KB 1027KB pool_workqueue 1914KB 1936KB task_group 91KB 123KB maple_node 1112KB 1488KB mm_struct 333KB 520KB vmap_area 1026KB 1620KB debug_objects_cache 2159KB 4834KB page->ptl 182KB 267KB kmalloc-cg-8k 1312KB 1472KB kmalloc-cg-4k 13096KB 13376KB kmalloc-cg-2k 8764KB 8928KB kmalloc-cg-1k 2536KB 2592KB kmalloc-cg-512 2032KB 2116KB kmalloc-cg-256 392KB 408KB kmalloc-cg-128 226KB 244KB kmalloc-cg-64 53KB 80KB kmalloc-cg-32 46KB 188KB kmalloc-cg-16 4KB 16KB kmalloc-cg-8 18KB 40KB kmalloc-cg-192 62KB 76KB kmalloc-cg-96 66KB 80KB kmalloc-8k 5088KB 5280KB kmalloc-4k 12632KB 15560KB kmalloc-2k 12520KB 13280KB kmalloc-1k 6006KB 6848KB kmalloc-512 11183KB 11196KB kmalloc-256 4836KB 4840KB kmalloc-128 1512KB 1520KB kmalloc-64 3044KB 3124KB kmalloc-32 1716KB 2212KB kmalloc-16 391KB 408KB kmalloc-8 459KB 508KB kmalloc-192 1669KB 1700KB kmalloc-96 1573KB 1696KB kmem_cache_node 213KB 220KB kmem_cache 177KB 226KB Out of memory and no killable processes... Kernel panic - not syncing: System is deadlocked on memory CPU: 1 UID: 0 PID: 5347 Comm: udevd 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 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 vpanic+0x552/0x970 kernel/panic.c:650 panic+0xd1/0xe0 kernel/panic.c:787 out_of_memory.cold+0xa2/0x170 mm/oom_kill.c:1182 __alloc_pages_may_oom mm/page_alloc.c:4139 [inline] __alloc_pages_slowpath mm/page_alloc.c:4937 [inline] __alloc_frozen_pages_noprof+0x233d/0x2ba0 mm/page_alloc.c:5263 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2484 folio_alloc_mpol_noprof+0x36/0x340 mm/mempolicy.c:2503 swap_cache_alloc_folio+0x1a8/0x300 mm/swap_state.c:571 swap_cluster_readahead+0x53b/0x770 mm/swap_state.c:768 swapin_readahead+0x160/0x12c0 mm/swap_state.c:924 do_swap_page+0xb2e/0x6900 mm/memory.c:4802 handle_pte_fault mm/memory.c:6320 [inline] __handle_mm_fault+0x18c1/0x2b60 mm/memory.c:6455 handle_mm_fault+0x36d/0xa20 mm/memory.c:6624 do_user_addr_fault+0x74c/0x12f0 arch/x86/mm/fault.c:1385 handle_page_fault arch/x86/mm/fault.c:1474 [inline] exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1527 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0010:epoll_put_uevent include/linux/eventpoll.h:86 [inline] RIP: 0010:ep_send_events+0x3ba/0xbf0 fs/eventpoll.c:1822 Code: 84 c1 0f 85 63 07 00 00 48 8b 53 6c 48 8b 44 24 30 48 8b 4c 24 38 48 89 54 24 28 48 39 c8 48 0f 47 c1 0f 01 cb 48 89 44 24 18 <44> 89 30 e8 0e 35 67 ff 48 8b 44 24 18 48 8b 54 24 28 48 89 50 04 RSP: 0018:ffffc90003b4fbb8 EFLAGS: 00050287 RAX: 00007ffea5083450 RBX: ffff88804446cb40 RCX: 00007ffffffff000 RDX: 0000000000000008 RSI: 0000000000000001 RDI: ffff88804446cbac RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88804446cb58 R13: ffff88804446cb58 R14: 0000000000000001 R15: ffffc90003b4fc20 ep_try_send_events fs/eventpoll.c:1905 [inline] ep_poll fs/eventpoll.c:1970 [inline] do_epoll_wait+0x4a4/0x1020 fs/eventpoll.c:2462 __do_sys_epoll_wait fs/eventpoll.c:2470 [inline] __se_sys_epoll_wait fs/eventpoll.c:2465 [inline] __x64_sys_epoll_wait+0x194/0x290 fs/eventpoll.c:2465 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f48276a7407 Code: Unable to access opcode bytes at 0x7f48276a73dd. RSP: 002b:00007ffea50832f0 EFLAGS: 00000202 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 00007f4827e25880 RCX: 00007f48276a7407 RDX: 0000000000000008 RSI: 00007ffea5083450 RDI: 000000000000000b RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000bb8 R11: 0000000000000202 R12: 0000000000000000 R13: 000055af89369100 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: 84 c1 test %al,%cl 2: 0f 85 63 07 00 00 jne 0x76b 8: 48 8b 53 6c mov 0x6c(%rbx),%rdx c: 48 8b 44 24 30 mov 0x30(%rsp),%rax 11: 48 8b 4c 24 38 mov 0x38(%rsp),%rcx 16: 48 89 54 24 28 mov %rdx,0x28(%rsp) 1b: 48 39 c8 cmp %rcx,%rax 1e: 48 0f 47 c1 cmova %rcx,%rax 22: 0f 01 cb stac 25: 48 89 44 24 18 mov %rax,0x18(%rsp) * 2a: 44 89 30 mov %r14d,(%rax) <-- trapping instruction 2d: e8 0e 35 67 ff call 0xff673540 32: 48 8b 44 24 18 mov 0x18(%rsp),%rax 37: 48 8b 54 24 28 mov 0x28(%rsp),%rdx 3c: 48 89 50 04 mov %rdx,0x4(%rax)