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BUG: KASAN: use-after-free in crc16+0xcf/0xe0 lib/crc16.c:58
Read of size 1 at addr ffff88808f131000 by task syz-executor.3/30507

CPU: 1 PID: 30507 Comm: syz-executor.3 Not tainted 6.2.0-rc5-next-20230127-syzkaller-08766-ge2f86c02fdc9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 print_address_description.constprop.0+0x28/0x360 mm/kasan/report.c:306
 print_report mm/kasan/report.c:417 [inline]
 kasan_report+0x11c/0x130 mm/kasan/report.c:517
 crc16+0xcf/0xe0 lib/crc16.c:58
 ext4_group_desc_csum+0x623/0x820 fs/ext4/super.c:3187
 ext4_group_desc_csum_set+0xc7/0x1a0 fs/ext4/super.c:3210
 ext4_mb_clear_bb fs/ext4/mballoc.c:6027 [inline]
 ext4_free_blocks+0x1049/0x2560 fs/ext4/mballoc.c:6173
 ext4_remove_blocks fs/ext4/extents.c:2527 [inline]
 ext4_ext_rm_leaf fs/ext4/extents.c:2710 [inline]
 ext4_ext_remove_space+0x353d/0x4760 fs/ext4/extents.c:2958
 ext4_ext_truncate+0x34b/0x400 fs/ext4/extents.c:4416
 ext4_truncate+0x1033/0x1620 fs/ext4/inode.c:4340
 ext4_setattr+0x1ac4/0x26b0 fs/ext4/inode.c:5620
 notify_change+0xb2c/0x1180 fs/attr.c:482
 do_truncate+0x143/0x200 fs/open.c:66
 handle_truncate fs/namei.c:3219 [inline]
 do_open fs/namei.c:3564 [inline]
 path_openat+0x2083/0x2750 fs/namei.c:3715
 do_filp_open+0x1ba/0x410 fs/namei.c:3742
 do_sys_openat2+0x16d/0x4c0 fs/open.c:1312
 do_sys_open fs/open.c:1328 [inline]
 __do_sys_creat fs/open.c:1404 [inline]
 __se_sys_creat fs/open.c:1398 [inline]
 __x64_sys_creat+0xcd/0x120 fs/open.c:1398
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe1d7c8c0c9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe1d8977168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fe1d7dac050 RCX: 00007fe1d7c8c0c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007fe1d7ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd7f9648cf R14: 00007fe1d8977300 R15: 0000000000022000
 </TASK>

Allocated by task 5132:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook mm/slab.h:769 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 kmem_cache_alloc_node+0x183/0x350 mm/slub.c:3497
 alloc_vmap_area+0x16c/0x1f60 mm/vmalloc.c:1600
 __get_vm_area_node+0x145/0x3f0 mm/vmalloc.c:2495
 __vmalloc_node_range+0x250/0x1300 mm/vmalloc.c:3141
 __vmalloc_node mm/vmalloc.c:3246 [inline]
 vzalloc+0x6b/0x80 mm/vmalloc.c:3319
 do_ipt_get_ctl+0x611/0x9e0 net/ipv4/netfilter/ip_tables.c:801
 nf_getsockopt+0x76/0xd0 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x189/0x1e0 net/ipv4/ip_sockglue.c:1815
 tcp_getsockopt+0x99/0x100 net/ipv4/tcp.c:4409
 __sys_getsockopt+0x21a/0x6a0 net/socket.c:2315
 __do_sys_getsockopt net/socket.c:2330 [inline]
 __se_sys_getsockopt net/socket.c:2327 [inline]
 __x64_sys_getsockopt+0xbe/0x160 net/socket.c:2327
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88808f131000
 which belongs to the cache vmap_area of size 72
The buggy address is located 0 bytes inside of
 72-byte region [ffff88808f131000, ffff88808f131048)

The buggy address belongs to the physical page:
page:ffffea00023c4c40 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88808f131ea0 pfn:0x8f131
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffff88801244fa00 ffffea000098f150 ffffea0000a71ed0
raw: ffff88808f131ea0 000000000027000b 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 18294, tgid 18294 (syz-executor.0), ts 1009144367629, free_ts 1009144295033
 prep_new_page mm/page_alloc.c:2552 [inline]
 get_page_from_freelist+0x11bb/0x2d50 mm/page_alloc.c:4328
 __alloc_pages+0x1cb/0x5c0 mm/page_alloc.c:5594
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2283
 alloc_slab_page mm/slub.c:1851 [inline]
 allocate_slab+0x28e/0x380 mm/slub.c:1998
 new_slab mm/slub.c:2051 [inline]
 ___slab_alloc+0xa91/0x1400 mm/slub.c:3193
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 kmem_cache_alloc_node+0x136/0x350 mm/slub.c:3497
 alloc_vmap_area+0x16c/0x1f60 mm/vmalloc.c:1600
 __get_vm_area_node+0x145/0x3f0 mm/vmalloc.c:2495
 __vmalloc_node_range+0x250/0x1300 mm/vmalloc.c:3141
 __vmalloc_node mm/vmalloc.c:3246 [inline]
 vzalloc+0x6b/0x80 mm/vmalloc.c:3319
 do_ip6t_get_ctl+0x613/0xa10 net/ipv6/netfilter/ip6_tables.c:817
 nf_getsockopt+0x76/0xd0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x1ef/0x2a0 net/ipv6/ipv6_sockglue.c:1511
 tcp_getsockopt+0x99/0x100 net/ipv4/tcp.c:4409
 __sys_getsockopt+0x21a/0x6a0 net/socket.c:2315
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1453 [inline]
 free_pcp_prepare+0x4d0/0x910 mm/page_alloc.c:1503
 free_unref_page_prepare mm/page_alloc.c:3390 [inline]
 free_unref_page+0x1d/0x490 mm/page_alloc.c:3485
 vfree+0x180/0x7e0 mm/vmalloc.c:2742
 __do_replace+0x16b/0x910 net/ipv4/netfilter/arp_tables.c:946
 do_replace net/ipv6/netfilter/ip6_tables.c:1157 [inline]
 do_ip6t_set_ctl+0x8a9/0xb30 net/ipv6/netfilter/ip6_tables.c:1639
 nf_setsockopt+0x87/0xe0 net/netfilter/nf_sockopt.c:101
 ipv6_setsockopt+0x12b/0x190 net/ipv6/ipv6_sockglue.c:1028
 tcp_setsockopt+0x9f/0x100 net/ipv4/tcp.c:3804
 __sys_setsockopt+0x2c6/0x5b0 net/socket.c:2271
 __do_sys_setsockopt net/socket.c:2282 [inline]
 __se_sys_setsockopt net/socket.c:2279 [inline]
 __x64_sys_setsockopt+0xbe/0x160 net/socket.c:2279
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88808f130f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88808f130f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88808f131000: fb fb fb fb fb fb fb fb fb fc fc fc fc fb fb fb
                   ^
 ffff88808f131080: fb fb fb fb fb fb fc fc fc fc 00 00 00 00 00 00
 ffff88808f131100: 00 00 00 fc fc fc fc fb fb fb fb fb fb fb fb fb
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