task_struct 3549KB 4462KB cred 116KB 348KB anon_vma_chain 84KB 208KB anon_vma 112KB 374KB pid 136KB 406KB Acpi-Operand 195KB 328KB Acpi-ParseExt 21KB 43KB Acpi-Parse 6KB 19KB Acpi-State 9KB 23KB Acpi-Namespace 31KB 44KB numa_policy 2KB 3KB perf_event 15KB 31KB trace_event_file 540KB 540KB ftrace_event_field 1020KB 1023KB pool_workqueue 1849KB 1872KB task_group 45KB 61KB maple_node 446KB 1344KB mm_struct 137KB 490KB vmap_area 263KB 732KB debug_objects_cache 1771KB 2439KB page->ptl 22KB 110KB kmalloc-cg-8k 1024KB 1216KB kmalloc-cg-4k 10952KB 11648KB kmalloc-cg-2k 7248KB 7648KB kmalloc-cg-1k 2050KB 2368KB kmalloc-cg-512 981KB 1136KB kmalloc-cg-256 334KB 384KB kmalloc-cg-128 208KB 228KB kmalloc-cg-64 45KB 72KB kmalloc-cg-32 41KB 168KB kmalloc-cg-16 5KB 20KB kmalloc-cg-8 16KB 32KB kmalloc-cg-192 47KB 64KB kmalloc-cg-96 53KB 68KB kmalloc-8k 4784KB 5312KB kmalloc-4k 33456KB 34928KB kmalloc-2k 11324KB 13152KB kmalloc-1k 10770KB 11012KB kmalloc-512 9931KB 10704KB kmalloc-256 4716KB 4720KB kmalloc-128 1418KB 1540KB kmalloc-64 2818KB 3024KB kmalloc-32 1186KB 1480KB kmalloc-16 347KB 368KB kmalloc-8 373KB 408KB kmalloc-192 1200KB 1272KB kmalloc-96 1512KB 1644KB kmem_cache_node 212KB 216KB kmem_cache 177KB 218KB Out of memory and no killable processes... Kernel panic - not syncing: System is deadlocked on memory CPU: 1 UID: 0 PID: 5340 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:2485 folio_alloc_mpol_noprof+0x36/0x340 mm/mempolicy.c:2504 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/0x68e0 mm/memory.c:4801 handle_pte_fault mm/memory.c:6319 [inline] __handle_mm_fault+0x18c1/0x2b60 mm/memory.c:6454 handle_mm_fault+0x36d/0xa20 mm/memory.c:6623 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:__put_user_nocheck_4+0x3/0x10 arch/x86/lib/putuser.S:104 Code: d9 0f 01 cb 89 01 31 c9 0f 01 ca e9 57 d0 03 00 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 01 cb <89> 01 31 c9 0f 01 ca c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90003ebfbb8 EFLAGS: 00050246 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00007fff7f70a200 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88804df38aec RBP: ffff88804df38a80 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88804df38a98 R14: ffffc90003ebfc20 R15: ffffc90003ebfc38 epoll_put_uevent include/linux/eventpoll.h:85 [inline] ep_send_events+0x2ca/0xbf0 fs/eventpoll.c:1822 ep_try_send_events fs/eventpoll.c:1905 [inline] ep_poll fs/eventpoll.c:1970 [inline] do_epoll_wait+0x4a4/0x1020 fs/eventpoll.c:2461 __do_sys_epoll_wait fs/eventpoll.c:2469 [inline] __se_sys_epoll_wait fs/eventpoll.c:2464 [inline] __x64_sys_epoll_wait+0x194/0x290 fs/eventpoll.c:2464 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: 0033:0x7f81e03df407 Code: Unable to access opcode bytes at 0x7f81e03df3dd. RSP: 002b:00007fff7f70a0a0 EFLAGS: 00000202 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 00007f81e0353880 RCX: 00007f81e03df407 RDX: 0000000000000008 RSI: 00007fff7f70a200 RDI: 000000000000000b RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000bb8 R11: 0000000000000202 R12: 0000000000000000 R13: 0000564e37689100 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: d9 0f (bad) (%rdi) 2: 01 cb add %ecx,%ebx 4: 89 01 mov %eax,(%rcx) 6: 31 c9 xor %ecx,%ecx 8: 0f 01 ca clac b: e9 57 d0 03 00 jmp 0x3d067 10: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 0f 01 cb stac * 2a: 89 01 mov %eax,(%rcx) <-- trapping instruction 2c: 31 c9 xor %ecx,%ecx 2e: 0f 01 ca clac 31: c3 ret 32: cc int3 33: cc int3 34: cc int3 35: cc int3 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop