kmalloc-96 2791KB 3376KB kmem_cache_node 219KB 220KB kmem_cache 203KB 203KB Out of memory and no killable processes... Kernel panic - not syncing: System is deadlocked on memory CPU: 1 UID: 0 PID: 5738 Comm: sshd Not tainted 6.15.0-rc7-syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x3d/0x1f0 lib/dump_stack.c:120 panic+0x71c/0x800 kernel/panic.c:354 out_of_memory+0x16e4/0x1700 mm/oom_kill.c:1175 __alloc_pages_may_oom mm/page_alloc.c:3851 [inline] __alloc_pages_slowpath mm/page_alloc.c:4653 [inline] __alloc_frozen_pages_noprof+0x1c74/0x23a0 mm/page_alloc.c:4979 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301 folio_alloc_mpol_noprof+0x36/0x2f0 mm/mempolicy.c:2320 __read_swap_cache_async+0x3b6/0x5a0 mm/swap_state.c:403 swap_cluster_readahead+0x4e1/0x710 mm/swap_state.c:635 swapin_readahead+0x13a/0xd60 mm/swap_state.c:814 do_swap_page+0x67e/0x6030 mm/memory.c:4532 handle_pte_fault mm/memory.c:6000 [inline] __handle_mm_fault+0x1056/0x2a40 mm/memory.c:6140 handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309 do_user_addr_fault+0x7a6/0x1370 arch/x86/mm/fault.c:1388 handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:do_sys_poll+0x7c3/0xe00 fs/select.c:1020 Code: 12 e8 41 c7 83 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 1d 05 00 00 0f b7 03 <66> 41 89 47 06 41 83 ee 01 49 83 c7 08 48 83 c3 08 e8 07 c7 83 ff RSP: 0000:ffffc9000361f900 EFLAGS: 00050246 RAX: 0000000000000000 RBX: ffffc9000361f9e2 RCX: ffffffff8236e880 RDX: 0000000000000000 RSI: ffffffff8236e88f RDI: 0000000000000005 RBP: ffffc9000361fe50 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000000 R12: ffffc9000361f9d0 R13: dffffc0000000000 R14: 0000000000000002 R15: 0000557708a781e0 __do_sys_ppoll fs/select.c:1115 [inline] __se_sys_ppoll fs/select.c:1095 [inline] __x64_sys_ppoll+0x254/0x2d0 fs/select.c:1095 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7fb0aa7407 Code: Unable to access opcode bytes at 0x7f7fb0aa73dd. RSP: 002b:00007ffc7d88e530 EFLAGS: 00000202 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 00007f7fb11af300 RCX: 00007f7fb0aa7407 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000557708a781e0 RBP: 0000000000000002 R08: 0000000000000008 R09: 0000000000000000 R10: 00007ffc7d88e800 R11: 0000000000000202 R12: 0000000000000064 R13: 0000000000000000 R14: 00005576e8362004 R15: 0000000000000002 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: 12 e8 adc %al,%ch 2: 41 c7 83 ff 48 89 d8 movl $0x3e8c148,-0x2776b701(%r11) 9: 48 c1 e8 03 d: 42 0f b6 14 28 movzbl (%rax,%r13,1),%edx 12: 48 89 d8 mov %rbx,%rax 15: 83 e0 07 and $0x7,%eax 18: 83 c0 01 add $0x1,%eax 1b: 38 d0 cmp %dl,%al 1d: 7c 08 jl 0x27 1f: 84 d2 test %dl,%dl 21: 0f 85 1d 05 00 00 jne 0x544 27: 0f b7 03 movzwl (%rbx),%eax * 2a: 66 41 89 47 06 mov %ax,0x6(%r15) <-- trapping instruction 2f: 41 83 ee 01 sub $0x1,%r14d 33: 49 83 c7 08 add $0x8,%r15 37: 48 83 c3 08 add $0x8,%rbx 3b: e8 07 c7 83 ff call 0xff83c747