EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue
ext4 filesystem being mounted at /root/syzkaller-testdir156925451/syzkaller.zIO4vW/915/bus supports timestamps until 2038 (0x7fffffff)
==================================================================
BUG: KASAN: use-after-free in crc16+0x235/0x2d0 lib/crc16.c:58
Read of size 1 at addr ffff88810f337000 by task syz-executor.1/13862

CPU: 1 PID: 13862 Comm: syz-executor.1 Not tainted 5.10.161-syzkaller-00019-g416c4356f372 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3c0 mm/kasan/report.c:233
 __kasan_report mm/kasan/report.c:419 [inline]
 kasan_report+0x1a4/0x1f0 mm/kasan/report.c:436
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306
 crc16+0x235/0x2d0 lib/crc16.c:58
 ext4_group_desc_csum+0x851/0xb50 fs/ext4/super.c:2850
 ext4_group_desc_csum_set+0x1d6/0x270 fs/ext4/super.c:2873
 ext4_free_blocks+0x1b9e/0x2ad0 fs/ext4/mballoc.c:5527
 ext4_remove_blocks+0xaf1/0x1180 fs/ext4/extents.c:2520
 ext4_ext_rm_leaf+0xaa8/0x18c0 fs/ext4/extents.c:2704
 ext4_ext_remove_space+0xf25/0x22a0 fs/ext4/extents.c:2952
 ext4_ext_truncate+0x18a/0x210 fs/ext4/extents.c:4413
 ext4_truncate+0xba0/0x1270 fs/ext4/inode.c:4356
 ext4_evict_inode+0xf1e/0x1730 fs/ext4/inode.c:288
 evict+0x2a3/0x6c0 fs/inode.c:577
 iput_final fs/inode.c:1655 [inline]
 iput+0x61f/0x7d0 fs/inode.c:1681
 do_unlinkat+0x51a/0x920 fs/namei.c:3982
 __do_sys_unlink fs/namei.c:4022 [inline]
 __se_sys_unlink fs/namei.c:4020 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4020
 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f37f56600f9
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:00007f37f43d3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f37f577ff80 RCX: 00007f37f56600f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000200
RBP: 00007f37f56bbae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff674bc56f R14: 00007f37f43d3300 R15: 0000000000022000

The buggy address belongs to the page:
page:ffffea00043ccdc0 refcount:0 mapcount:-128 mapping:0000000000000000 index:0x0 pfn:0x10f337
flags: 0x8000000000000000()
raw: 8000000000000000 ffffea0005264dc8 ffffea00044bfcc8 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffff7f 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x100cc0(GFP_USER), pid 12810, ts 2668439400495, free_ts 2668486523508
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2386 [inline]
 prep_new_page mm/page_alloc.c:2392 [inline]
 get_page_from_freelist+0x755/0x810 mm/page_alloc.c:4073
 __alloc_pages_nodemask+0x3b6/0x890 mm/page_alloc.c:5160
 __alloc_pages include/linux/gfp.h:529 [inline]
 __alloc_pages_node include/linux/gfp.h:542 [inline]
 alloc_pages_node include/linux/gfp.h:556 [inline]
 alloc_pages include/linux/gfp.h:575 [inline]
 __get_free_pages+0xe/0x30 mm/page_alloc.c:5203
 kasan_populate_vmalloc_pte+0x39/0x130 mm/kasan/shadow.c:260
 apply_to_pte_range mm/memory.c:2487 [inline]
 apply_to_pmd_range mm/memory.c:2523 [inline]
 apply_to_pud_range mm/memory.c:2551 [inline]
 apply_to_p4d_range mm/memory.c:2579 [inline]
 __apply_to_page_range+0x758/0xa30 mm/memory.c:2606
 apply_to_page_range+0x3b/0x50 mm/memory.c:2624
 kasan_populate_vmalloc+0x65/0x70 mm/kasan/shadow.c:291
 alloc_vmap_area+0x1895/0x19d0 mm/vmalloc.c:1236
 __get_vm_area_node+0x170/0x200 mm/vmalloc.c:2084
 __vmalloc_node_range+0xd5/0x6d0 mm/vmalloc.c:2561
 __vmalloc_node mm/vmalloc.c:2609 [inline]
 vzalloc+0x78/0x90 mm/vmalloc.c:2662
 alloc_counters+0x68/0x550 net/ipv4/netfilter/arp_tables.c:659
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:839 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
 do_ip6t_get_ctl+0xe9c/0x18b0 net/ipv6/netfilter/ip6_tables.c:1672
 nf_getsockopt+0x27a/0x2a0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x1dd7/0x30c0 net/ipv6/ipv6_sockglue.c:1493
 tcp_getsockopt+0x1d4/0x2bf0 net/ipv4/tcp.c:3976
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1332 [inline]
 free_pcp_prepare+0x18c/0x1c0 mm/page_alloc.c:1406
 free_unref_page_prepare mm/page_alloc.c:3293 [inline]
 free_unref_page mm/page_alloc.c:3347 [inline]
 free_the_page mm/page_alloc.c:5219 [inline]
 __free_pages+0x390/0x570 mm/page_alloc.c:5228
 free_pages+0x7c/0x90 mm/page_alloc.c:5239
 kasan_depopulate_vmalloc_pte+0x6a/0x90 mm/kasan/shadow.c:369
 apply_to_pte_range mm/memory.c:2487 [inline]
 apply_to_pmd_range mm/memory.c:2523 [inline]
 apply_to_pud_range mm/memory.c:2551 [inline]
 apply_to_p4d_range mm/memory.c:2579 [inline]
 __apply_to_page_range+0x758/0xa30 mm/memory.c:2606
 apply_to_existing_page_range+0x38/0x50 mm/memory.c:2855
 kasan_release_vmalloc+0x9a/0xb0 mm/kasan/shadow.c:479
 __purge_vmap_area_lazy+0x13c0/0x14e0 mm/vmalloc.c:1374
 _vm_unmap_aliases+0x364/0x3e0 mm/vmalloc.c:1771
 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:1794
 change_page_attr_set_clr+0x2ce/0x6c0 arch/x86/mm/pat/set_memory.c:1732
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1789 [inline]
 set_memory_ro+0xa1/0xe0 arch/x86/mm/pat/set_memory.c:1935
 bpf_jit_binary_lock_ro include/linux/filter.h:839 [inline]
 bpf_int_jit_compile+0x98e4/0x9e70 arch/x86/net/bpf_jit_comp.c:2127
 bpf_prog_select_runtime+0x73e/0xa00 kernel/bpf/core.c:1869
 bpf_prog_load+0x131b/0x1b70 kernel/bpf/syscall.c:2237
 __do_sys_bpf+0x441/0x6c0 kernel/bpf/syscall.c:4429

Memory state around the buggy address:
 ffff88810f336f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88810f336f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88810f337000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88810f337080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88810f337100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================