kmalloc-96 2605KB 3100KB kmem_cache_node 219KB 220KB kmem_cache 187KB 187KB Out of memory and no killable processes... Kernel panic - not syncing: System is deadlocked on memory CPU: 2 UID: 0 PID: 5741 Comm: sshd Not tainted 6.15.0-syzkaller-10820-gcd2e103d57e5 #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:382 out_of_memory+0x16e4/0x1700 mm/oom_kill.c:1175 __alloc_pages_may_oom mm/page_alloc.c:3836 [inline] __alloc_pages_slowpath mm/page_alloc.c:4646 [inline] __alloc_frozen_pages_noprof+0x1d51/0x23f0 mm/page_alloc.c:4972 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2419 folio_alloc_mpol_noprof+0x36/0x2f0 mm/mempolicy.c:2438 __read_swap_cache_async+0x3b6/0x5a0 mm/swap_state.c:400 swap_cluster_readahead+0x4e1/0x710 mm/swap_state.c:632 swapin_readahead+0x13a/0xd60 mm/swap_state.c:811 do_swap_page+0x63f/0x6560 mm/memory.c:4621 handle_pte_fault mm/memory.c:6090 [inline] __handle_mm_fault+0x162f/0x53d0 mm/memory.c:6230 handle_mm_fault+0x589/0xd10 mm/memory.c:6399 do_user_addr_fault+0x7a6/0x1370 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x5c/0xb0 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0010:do_sys_poll+0x765/0xdf0 fs/select.c:1020 Code: 12 e8 8f 21 82 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 08 06 00 00 0f b7 03 <66> 41 89 47 06 41 83 ee 01 49 83 c7 08 48 83 c3 08 e8 55 21 82 ff RSP: 0018:ffffc9000337f900 EFLAGS: 00050246 RAX: 0000000000000000 RBX: ffffc9000337f9e2 RCX: ffffffff82394c12 RDX: 0000000000000000 RSI: ffffffff82394c21 RDI: 0000000000000005 RBP: ffffc9000337fe50 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000001 R12: ffffc9000337f9d0 R13: dffffc0000000000 R14: 0000000000000002 R15: 00005625001a51e0 __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/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f877b2a7407 Code: Unable to access opcode bytes at 0x7f877b2a73dd. RSP: 002b:00007ffdc5b01ac0 EFLAGS: 00000202 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 00007f877b9df300 RCX: 00007f877b2a7407 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00005625001a51e0 RBP: 0000000000000002 R08: 0000000000000008 R09: 0000000000000000 R10: 00007ffdc5b01d90 R11: 0000000000000202 R12: 0000000000000064 R13: 0000000000000000 R14: 00005624cc376004 R15: 0000000000000002 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 8f 21 82 ff call 0xff822194 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 08 06 00 00 jne 0x62e 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 55 21 82 ff call 0xff822194