smpboot: CPU0: Intel QEMU Virtual CPU version 2.5+ (family: 0xf, model: 0x6b, stepping: 0x1)
Performance Events: unsupported Netburst CPU model 107 no PMU driver, software events only.
signal: max sigframe size: 1440
------------[ cut here ]------------
kernel BUG at mm/slub.c:3832!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:___slab_alloc+0x13ab/0x1420
Code: ff ff 4c 89 e7 48 c7 c6 3a a1 a0 8d e8 3e 4f 0f ff 90 0f 0b 90 0f 0b 48 89 f7 48 c7 c6 3a a1 a0 8d e8 29 4f 0f ff 90 0f 0b 90 <0f> 0b 90 0f 0b 4c 89 e7 48 c7 c6 3a a1 a0 8d e8 11 4f 0f ff 90 0f
RSP: 0000:ffffc90000047750 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888100028000 RCX: 0000000000800001
RDX: 0000000000800001 RSI: ffffffff8dba8965 RDI: ffffffff8be33980
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff82189e55
R10: dffffc0000000000 R11: fffffbfff1f47407 R12: ffff88804b03e480
R13: ffff88801a441640 R14: ffff88804b03e460 R15: ffffffff82189e55
FS:  0000000000000000(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88813ffff000 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __kmalloc_cache_node_noprof+0x29a/0x3d0
 __smpboot_create_thread+0x11a/0x3b0
 smpboot_register_percpu_thread+0xc6/0x420
 spawn_ksoftirqd+0x2f/0xc0
 do_one_initcall+0x236/0x820
 do_pre_smp_initcalls+0x4c/0x80
 kernel_init_freeable+0x30c/0x4b0
 kernel_init+0x1d/0x1d0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:___slab_alloc+0x13ab/0x1420
Code: ff ff 4c 89 e7 48 c7 c6 3a a1 a0 8d e8 3e 4f 0f ff 90 0f 0b 90 0f 0b 48 89 f7 48 c7 c6 3a a1 a0 8d e8 29 4f 0f ff 90 0f 0b 90 <0f> 0b 90 0f 0b 4c 89 e7 48 c7 c6 3a a1 a0 8d e8 11 4f 0f ff 90 0f
RSP: 0000:ffffc90000047750 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888100028000 RCX: 0000000000800001
RDX: 0000000000800001 RSI: ffffffff8dba8965 RDI: ffffffff8be33980
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff82189e55
R10: dffffc0000000000 R11: fffffbfff1f47407 R12: ffff88804b03e480
R13: ffff88801a441640 R14: ffff88804b03e460 R15: ffffffff82189e55
FS:  0000000000000000(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88813ffff000 CR3: 000000000df36000 CR4: 00000000000006f0