BUG: unable to handle page fault for address: ffffed1028000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 13ffee067 P4D 13ffee067 PUD 5fff6067 PMD 0 
Oops: Oops: 0002 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5935 Comm: syz.0.9 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:memset_orig+0x33/0xb0
Code: 01 01 01 01 01 01 01 01 48 0f af c1 41 89 f9 41 83 e1 07 75 74 48 89 d1 48 c1 e9 06 74 39 66 0f 1f 84 00 00 00 00 00 48 ff c9 <48> 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47
RSP: 0018:ffffc900042264c8 EFLAGS: 00010212
RAX: 0000000000000000 RBX: ffff88810e59c000 RCX: 0000000000672cdf
RDX: 0000000020000000 RSI: 0000000000000000 RDI: ffffed1028000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffed1021cb3800 R11: fffffbfff1c02c97 R12: ffffc900042265a0
R13: 0000000000000000 R14: 00000000ffffffff R15: dffffc0000000000
FS:  00007fe8d7ffc6c0(0000) GS:ffff8880b83dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed1028000000 CR3: 000000010fc26000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 kasan_unpoison+0x48/0x70
 setup_object+0x2e/0xd0
 allocate_slab+0x1fd/0x3a0
 ___slab_alloc+0xe94/0x1920
 __slab_alloc+0x65/0x100
 kmem_cache_alloc_noprof+0x3f9/0x6e0
 zs_malloc+0x88/0x720
 zswap_store+0x1062/0x1f40
 swap_writeout+0x710/0xd70
 shrink_folio_list+0x3011/0x4c70
 reclaim_folio_list+0xeb/0x500
 reclaim_pages+0x454/0x520
 madvise_cold_or_pageout_pte_range+0x1974/0x1d00
 walk_pgd_range+0xfe9/0x1d40
 __walk_page_range+0x14c/0x710
 walk_page_range_vma+0x393/0x440
 madvise_vma_behavior+0x311f/0x3a10
 madvise_walk_vmas+0x51c/0xa30
 madvise_do_behavior+0x38e/0x550
 do_madvise+0x1bc/0x270
 __x64_sys_madvise+0xa7/0xc0
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe8d718ec29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe8d7ffc038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007fe8d73d6090 RCX: 00007fe8d718ec29
RDX: 0000000000000015 RSI: 0000000000c00000 RDI: 0000200000000000
RBP: 00007fe8d7211e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe8d73d6128 R14: 00007fe8d73d6090 R15: 00007ffc218eae88
 </TASK>
Modules linked in:
CR2: ffffed1028000000
---[ end trace 0000000000000000 ]---
RIP: 0010:memset_orig+0x33/0xb0
Code: 01 01 01 01 01 01 01 01 48 0f af c1 41 89 f9 41 83 e1 07 75 74 48 89 d1 48 c1 e9 06 74 39 66 0f 1f 84 00 00 00 00 00 48 ff c9 <48> 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47
RSP: 0018:ffffc900042264c8 EFLAGS: 00010212
RAX: 0000000000000000 RBX: ffff88810e59c000 RCX: 0000000000672cdf
RDX: 0000000020000000 RSI: 0000000000000000 RDI: ffffed1028000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffed1021cb3800 R11: fffffbfff1c02c97 R12: ffffc900042265a0
R13: 0000000000000000 R14: 00000000ffffffff R15: dffffc0000000000
FS:  00007fe8d7ffc6c0(0000) GS:ffff8880b83dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed1028000000 CR3: 000000010fc26000 CR4: 00000000000006f0
