kmalloc-96              1410KB       1556KB
kmem_cache_node          213KB        220KB
kmem_cache               176KB        218KB
Out of memory and no killable processes...
Kernel panic - not syncing: System is deadlocked on memory
CPU: 3 UID: 0 PID: 5148 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:
 <TASK>
 __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:1166
 __alloc_pages_may_oom mm/page_alloc.c:4116 [inline]
 __alloc_pages_slowpath mm/page_alloc.c:4914 [inline]
 __alloc_frozen_pages_noprof+0x232d/0x2bc0 mm/page_alloc.c:5239
 alloc_pages_mpol+0x1fb/0x540 mm/mempolicy.c:2490
 folio_alloc_mpol_noprof+0x36/0x260 mm/mempolicy.c:2509
 swap_cache_alloc_folio+0x1a8/0x300 mm/swap_state.c:548
 swap_cluster_readahead+0x53b/0x770 mm/swap_state.c:745
 swapin_readahead+0x160/0x12c0 mm/swap_state.c:901
 do_swap_page+0x931/0x6180 mm/memory.c:4891
 handle_pte_fault mm/memory.c:6430 [inline]
 __handle_mm_fault+0x192f/0x2a00 mm/memory.c:6565
 handle_mm_fault+0x36d/0xa20 mm/memory.c:6734
 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:epoll_put_uevent include/linux/eventpoll.h:90 [inline]
RIP: 0010:ep_send_events+0x3ba/0xbf0 fs/eventpoll.c:1824
Code: 84 c1 0f 85 63 07 00 00 48 8b 53 6c 48 8b 44 24 30 48 8b 4c 24 38 48 89 54 24 28 48 39 c8 48 0f 47 c1 0f 01 cb 48 89 44 24 18 <44> 89 30 e8 de 84 66 ff 48 8b 44 24 18 48 8b 54 24 28 48 89 50 04
RSP: 0000:ffffc90002ad7bb8 EFLAGS: 00050287
RAX: 00007fff0a5fb850 RBX: ffff8880138e2a80 RCX: 00007ffffffff000
RDX: 0000000000000004 RSI: 0000000000000001 RDI: ffff8880138e2aec
RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880138e2a98
R13: ffff8880138e2a98 R14: 0000000000000001 R15: ffffc90002ad7c20
 ep_try_send_events fs/eventpoll.c:1907 [inline]
 ep_poll fs/eventpoll.c:1972 [inline]
 do_epoll_wait+0x4a4/0x1020 fs/eventpoll.c:2464
 __do_sys_epoll_wait fs/eventpoll.c:2472 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2467 [inline]
 __x64_sys_epoll_wait+0x194/0x290 fs/eventpoll.c:2467
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f23d9aa7407
Code: Unable to access opcode bytes at 0x7f23d9aa73dd.
RSP: 002b:00007fff0a5fb6f0 EFLAGS: 00000202 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00007f23da152880 RCX: 00007f23d9aa7407
RDX: 0000000000000008 RSI: 00007fff0a5fb850 RDI: 000000000000000b
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000bb8 R11: 0000000000000202 R12: 0000000000000000
R13: 00005610d18de100 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess):
   0:	84 c1                	test   %al,%cl
   2:	0f 85 63 07 00 00    	jne    0x76b
   8:	48 8b 53 6c          	mov    0x6c(%rbx),%rdx
   c:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
  11:	48 8b 4c 24 38       	mov    0x38(%rsp),%rcx
  16:	48 89 54 24 28       	mov    %rdx,0x28(%rsp)
  1b:	48 39 c8             	cmp    %rcx,%rax
  1e:	48 0f 47 c1          	cmova  %rcx,%rax
  22:	0f 01 cb             	stac
  25:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
* 2a:	44 89 30             	mov    %r14d,(%rax) <-- trapping instruction
  2d:	e8 de 84 66 ff       	call   0xff668510
  32:	48 8b 44 24 18       	mov    0x18(%rsp),%rax
  37:	48 8b 54 24 28       	mov    0x28(%rsp),%rdx
  3c:	48 89 50 04          	mov    %rdx,0x4(%rax)