task_struct 3713KB 4845KB cred 112KB 324KB anon_vma_chain 75KB 196KB anon_vma 101KB 358KB pid 145KB 375KB Acpi-Operand 201KB 320KB Acpi-ParseExt 31KB 39KB Acpi-Parse 12KB 31KB Acpi-State 3KB 15KB Acpi-Namespace 35KB 52KB numa_policy 5KB 7KB perf_event 15KB 31KB trace_event_file 540KB 540KB ftrace_event_field 1020KB 1023KB pool_workqueue 1896KB 1936KB task_group 63KB 77KB maple_node 439KB 1368KB mm_struct 189KB 459KB vmap_area 272KB 922KB debug_objects_cache 2175KB 2914KB page->ptl 22KB 102KB kmalloc-cg-8k 1248KB 1440KB kmalloc-cg-4k 13024KB 13952KB kmalloc-cg-2k 8704KB 9216KB kmalloc-cg-1k 2510KB 2816KB kmalloc-cg-512 1142KB 1424KB kmalloc-cg-256 393KB 416KB kmalloc-cg-128 247KB 260KB kmalloc-cg-64 43KB 64KB kmalloc-cg-32 40KB 200KB kmalloc-cg-16 4KB 20KB kmalloc-cg-8 20KB 40KB kmalloc-cg-192 60KB 76KB kmalloc-cg-96 55KB 68KB kmalloc-8k 5872KB 6208KB kmalloc-4k 39864KB 39968KB kmalloc-2k 12744KB 13856KB kmalloc-1k 11028KB 11424KB kmalloc-512 10810KB 11280KB kmalloc-256 4837KB 4840KB kmalloc-128 1550KB 1628KB kmalloc-64 2926KB 3192KB kmalloc-32 1586KB 3124KB kmalloc-16 377KB 424KB kmalloc-8 398KB 456KB kmalloc-192 1336KB 1452KB kmalloc-96 1570KB 1736KB kmem_cache_node 213KB 220KB 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: 5343 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/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:rseq_set_ids_get_csaddr+0x9a/0x230 include/linux/rseq_entry.h:503 Code: e8 3b 20 c8 ff 48 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 4e 01 00 00 44 8b 7d 00 <44> 89 3b e8 0e 20 c8 ff 44 89 7b 04 e8 05 20 c8 ff 44 89 73 14 e8 RSP: 0000:ffffc90002b17e28 EFLAGS: 00050246 RAX: 0000000000000000 RBX: 00007f55c7f596a0 RCX: ffffffff823fdb40 RDX: 1ffff92000562fd0 RSI: ffffffff823fdb45 RDI: ffff888026462480 RBP: ffffc90002b17e80 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90002b17ea0 R13: ffff888026462480 R14: 0000000000000000 R15: 0000000000000001 rseq_update_usr include/linux/rseq_entry.h:536 [inline] rseq_slowpath_update_usr kernel/rseq.c:305 [inline] __rseq_handle_slowpath+0x251/0x3c0 kernel/rseq.c:331 rseq_handle_slowpath include/linux/rseq.h:17 [inline] resume_user_mode_work include/linux/resume_user_mode.h:62 [inline] __exit_to_user_mode_loop kernel/entry/common.c:67 [inline] exit_to_user_mode_loop kernel/entry/common.c:98 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline] irqentry_exit+0x24c/0x670 kernel/entry/common.c:219 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0033:0x7f55c78b5b00 Code: Unable to access opcode bytes at 0x7f55c78b5ad6. RSP: 002b:00007ffeeb2946c8 EFLAGS: 00010206 RAX: 0000000000000080 RBX: 0000000000000040 RCX: 0000000000000030 RDX: 00007f55c79f1b80 RSI: 0000000000000001 RDI: 000055f4461eb140 RBP: 00007f55c79f1ac0 R08: 00007f55c79f1ac0 R09: 0000000000000040 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000029 R13: 000055f4461eb140 R14: 0000000000000070 R15: 00007f55c79f1b20 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: e8 3b 20 c8 ff call 0xffc82040 5: 48 89 ea mov %rbp,%rdx 8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax f: fc ff df 12: 48 c1 ea 03 shr $0x3,%rdx 16: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax 1a: 84 c0 test %al,%al 1c: 74 08 je 0x26 1e: 3c 03 cmp $0x3,%al 20: 0f 8e 4e 01 00 00 jle 0x174 26: 44 8b 7d 00 mov 0x0(%rbp),%r15d * 2a: 44 89 3b mov %r15d,(%rbx) <-- trapping instruction 2d: e8 0e 20 c8 ff call 0xffc82040 32: 44 89 7b 04 mov %r15d,0x4(%rbx) 36: e8 05 20 c8 ff call 0xffc82040 3b: 44 89 73 14 mov %r14d,0x14(%rbx) 3f: e8 .byte 0xe8