task_struct 3678KB 5140KB cred 120KB 360KB anon_vma_chain 104KB 236KB anon_vma 127KB 351KB pid 139KB 406KB Acpi-Operand 195KB 320KB Acpi-ParseExt 11KB 31KB Acpi-Parse 12KB 27KB Acpi-State 16KB 31KB Acpi-Namespace 35KB 44KB numa_policy 3KB 4KB perf_event 15KB 31KB trace_event_file 577KB 580KB ftrace_event_field 1118KB 1122KB pool_workqueue 2024KB 2048KB task_group 24KB 32KB maple_node 417KB 1432KB mm_struct 172KB 446KB vmap_area 268KB 728KB debug_objects_cache 1825KB 3441KB page->ptl 30KB 118KB kmalloc-cg-8k 1168KB 1440KB kmalloc-cg-4k 10392KB 11008KB kmalloc-cg-2k 6504KB 6912KB kmalloc-cg-1k 1884KB 2272KB kmalloc-cg-512 924KB 1056KB kmalloc-cg-256 270KB 312KB kmalloc-cg-128 191KB 212KB kmalloc-cg-64 33KB 52KB kmalloc-cg-32 38KB 172KB kmalloc-cg-16 7KB 16KB kmalloc-cg-8 15KB 32KB kmalloc-cg-192 49KB 68KB kmalloc-cg-96 50KB 72KB kmalloc-8k 5040KB 5312KB kmalloc-4k 34208KB 34256KB kmalloc-2k 12300KB 15296KB kmalloc-1k 10638KB 10660KB kmalloc-512 9991KB 10608KB kmalloc-256 10600KB 10676KB kmalloc-128 1476KB 1572KB kmalloc-64 2820KB 3096KB kmalloc-32 1206KB 1540KB kmalloc-16 354KB 392KB kmalloc-8 356KB 404KB kmalloc-192 1095KB 1164KB kmalloc-96 1591KB 1656KB kmem_cache_node 215KB 220KB kmem_cache 179KB 218KB Out of memory and no killable processes... Kernel panic - not syncing: System is deadlocked on memory CPU: 1 UID: 0 PID: 5151 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: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_pages_mpol+0x1fb/0x540 mm/mempolicy.c:2490 folio_alloc_mpol_noprof+0x36/0x260 mm/mempolicy.c:2509 __swap_cache_alloc mm/swap_state.c:434 [inline] swap_cache_alloc_folio+0x3d7/0xc50 mm/swap_state.c:524 swap_cache_read_folio+0x47/0x140 mm/swap_state.c:646 swap_cluster_readahead+0x479/0x5f0 mm/swap_state.c:842 swapin_readahead+0x159/0x1200 mm/swap_state.c:984 do_swap_page+0xf98/0x5780 mm/memory.c:4836 handle_pte_fault mm/memory.c:6382 [inline] __handle_mm_fault+0x192f/0x2a00 mm/memory.c:6517 handle_mm_fault+0x37b/0xa30 mm/memory.c:6686 do_user_addr_fault+0x74c/0x12f0 arch/x86/mm/fault.c:1394 handle_page_fault arch/x86/mm/fault.c:1483 [inline] exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0010:rseq_set_ids_get_csaddr include/linux/rseq_entry.h:488 [inline] RIP: 0010:rseq_update_usr include/linux/rseq_entry.h:536 [inline] RIP: 0010:rseq_slowpath_update_usr kernel/rseq.c:303 [inline] RIP: 0010:__rseq_handle_slowpath+0x248/0x680 kernel/rseq.c:329 Code: 0f 85 1f 04 00 00 44 0f b6 bb 44 16 00 00 bf 01 00 00 00 44 89 fe e8 f7 14 c4 ff 41 80 ff 01 0f 86 33 01 00 00 e8 d8 1a c4 ff <45> 8b 7d 00 e8 cf 1a c4 ff 48 8d bb 48 16 00 00 48 b8 00 00 00 00 RSP: 0000:ffffc90003ef7ea0 EFLAGS: 00050293 RAX: 0000000000000000 RBX: ffff888024682540 RCX: ffffffff82450dd9 RDX: ffff888024682540 RSI: ffffffff82450de8 RDI: ffff888024682540 RBP: ffffc90003ef7ef0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000000 R12: ffffc90003ef7f48 R13: 00007fc57ffff680 R14: 0000000000000000 R15: 0000000000000002 rseq_handle_slowpath include/linux/rseq.h:22 [inline] resume_user_mode_work include/linux/resume_user_mode.h:62 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop kernel/entry/common.c:101 [inline] __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:244 [inline] irqentry_exit_to_user_mode include/linux/irq-entry-common.h:315 [inline] irqentry_exit+0x460/0xa00 kernel/entry/common.c:165 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595 RIP: 0033:0x55a57f4bf019 Code: Unable to access opcode bytes at 0x55a57f4befef. RSP: 002b:00007ffcb4cd7290 EFLAGS: 00010246 RAX: 000000000000002a RBX: 0000000000000400 RCX: 00007ffcb4cd73c0 RDX: 00007ffcb4cd73c0 RSI: 0000000000000400 RDI: 0000000000000000 RBP: 000055a587af2910 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcb4cd72c8 R13: 00007ffcb4cd73c0 R14: 000055a57f4d1be0 R15: 00007ffcb4cd7ed0 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: 0f 85 1f 04 00 00 jne 0x425 6: 44 0f b6 bb 44 16 00 movzbl 0x1644(%rbx),%r15d d: 00 e: bf 01 00 00 00 mov $0x1,%edi 13: 44 89 fe mov %r15d,%esi 16: e8 f7 14 c4 ff call 0xffc41512 1b: 41 80 ff 01 cmp $0x1,%r15b 1f: 0f 86 33 01 00 00 jbe 0x158 25: e8 d8 1a c4 ff call 0xffc41b02 * 2a: 45 8b 7d 00 mov 0x0(%r13),%r15d <-- trapping instruction 2e: e8 cf 1a c4 ff call 0xffc41b02 33: 48 8d bb 48 16 00 00 lea 0x1648(%rbx),%rdi 3a: 48 rex.W 3b: b8 00 00 00 00 mov $0x0,%eax