kmalloc-96 1572KB 1600KB 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: 0 UID: 0 PID: 5732 Comm: sshd 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:do_sys_poll+0xbfd/0xeb0 fs/select.c:1015 Code: 12 e8 17 61 7a ff 48 89 d8 48 c1 e8 03 42 0f b6 14 28 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 4e 02 00 00 0f b7 03 <66> 41 89 47 06 41 83 ee 01 49 83 c7 08 48 83 c3 08 e8 dd 60 7a ff RSP: 0000:ffffc90003fff8d0 EFLAGS: 00050246 RAX: 0000000000000000 RBX: ffffc90003fff9b2 RCX: ffffffff828dae7a RDX: 0000000000000000 RSI: ffffffff828dae89 RDI: ffff888025bb0000 RBP: ffffc90003fffe18 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000000 R12: ffffc90003fff9a0 R13: dffffc0000000000 R14: 0000000000000002 R15: 000055f7d35d8210 __do_sys_ppoll fs/select.c:1106 [inline] __se_sys_ppoll fs/select.c:1086 [inline] __x64_sys_ppoll+0x2b5/0x350 fs/select.c:1086 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: 0033:0x7f5d16e8b407 Code: Unable to access opcode bytes at 0x7f5d16e8b3dd. RSP: 002b:00007ffd1100b8e0 EFLAGS: 00000202 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 00007f5d16d97300 RCX: 00007f5d16e8b407 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000055f7d35d8210 RBP: 0000000000000002 R08: 0000000000000008 R09: 0000000000000000 R10: 00007ffd1100bbb0 R11: 0000000000000202 R12: 0000000000000064 R13: 0000000000000000 R14: 000055f79735a004 R15: 0000000000000002 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 17 61 7a ff call 0xff7a611c 5: 48 89 d8 mov %rbx,%rax 8: 48 c1 e8 03 shr $0x3,%rax c: 42 0f b6 14 28 movzbl (%rax,%r13,1),%edx 11: 48 89 d8 mov %rbx,%rax 14: 83 e0 07 and $0x7,%eax 17: 83 c0 01 add $0x1,%eax 1a: 38 d0 cmp %dl,%al 1c: 7c 08 jl 0x26 1e: 84 d2 test %dl,%dl 20: 0f 85 4e 02 00 00 jne 0x274 26: 0f b7 03 movzwl (%rbx),%eax * 29: 66 41 89 47 06 mov %ax,0x6(%r15) <-- trapping instruction 2e: 41 83 ee 01 sub $0x1,%r14d 32: 49 83 c7 08 add $0x8,%r15 36: 48 83 c3 08 add $0x8,%rbx 3a: e8 dd 60 7a ff call 0xff7a611c