kmalloc-96              1803KB       1820KB
kmem_cache_node          223KB        228KB
kmem_cache               195KB        195KB
Out of memory and no killable processes...
Kernel panic - not syncing: System is deadlocked on memory
CPU: 0 UID: 0 PID: 5367 Comm: udevd Not tainted 6.16.0-rc7-syzkaller-00020-gf9af7b5d9349 #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:
 <TASK>
 __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+0x1d53/0x23f0 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+0x635/0x65c0 mm/memory.c:4603
 handle_pte_fault mm/memory.c:6072 [inline]
 __handle_mm_fault+0x162f/0x5490 mm/memory.c:6212
 handle_mm_fault+0x589/0xd10 mm/memory.c:6381
 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:__put_user_nocheck_4+0x3/0x10 arch/x86/lib/putuser.S:104
Code: d9 0f 01 cb 89 01 31 c9 0f 01 ca c3 cc cc cc cc 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 01 cb <89> 01 31 c9 0f 01 ca e9 11 5b 03 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000ca3fbc8 EFLAGS: 00050246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 00007ffd3b50d580
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88804bb541ec
RBP: ffff88804bb54180 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff88804bb54198 R14: ffffc9000ca3fc38 R15: ffffc9000ca3fc50
 epoll_put_uevent include/linux/eventpoll.h:85 [inline]
 ep_send_events+0x2fe/0xc40 fs/eventpoll.c:1908
 ep_try_send_events fs/eventpoll.c:1991 [inline]
 ep_poll fs/eventpoll.c:2056 [inline]
 do_epoll_wait+0x924/0x1040 fs/eventpoll.c:2530
 __do_sys_epoll_wait fs/eventpoll.c:2538 [inline]
 __se_sys_epoll_wait fs/eventpoll.c:2533 [inline]
 __x64_sys_epoll_wait+0x194/0x290 fs/eventpoll.c:2533
 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: 0033:0x7f7b3b4a7407
Code: Unable to access opcode bytes at 0x7f7b3b4a73dd.
RSP: 002b:00007ffd3b50d420 EFLAGS: 00000202 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00007f7b3bb5b880 RCX: 00007f7b3b4a7407
RDX: 0000000000000008 RSI: 00007ffd3b50d580 RDI: 000000000000000b
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000bb8 R11: 0000000000000202 R12: 0000000000000000
R13: 0000561b89876100 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Kernel Offset: disabled
Rebooting in 86400 seconds..
----------------
Code disassembly (best guess):
   0:	d9 0f                	(bad)  (%rdi)
   2:	01 cb                	add    %ecx,%ebx
   4:	89 01                	mov    %eax,(%rcx)
   6:	31 c9                	xor    %ecx,%ecx
   8:	0f 01 ca             	clac
   b:	c3                   	ret
   c:	cc                   	int3
   d:	cc                   	int3
   e:	cc                   	int3
   f:	cc                   	int3
  10:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	0f 01 cb             	stac
* 2a:	89 01                	mov    %eax,(%rcx) <-- trapping instruction
  2c:	31 c9                	xor    %ecx,%ecx
  2e:	0f 01 ca             	clac
  31:	e9 11 5b 03 00       	jmp    0x35b47
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop