loop0: detected capacity change from 0 to 32768
==================================================================
BUG: KASAN: slab-out-of-bounds in journal_entry_dev_usage_to_text+0x12d/0x1d0 fs/bcachefs/journal_io.c:717
Read of size 8 at addr ffff888041fc6000 by task syz.0.0/5325

CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0
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+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 journal_entry_dev_usage_to_text+0x12d/0x1d0 fs/bcachefs/journal_io.c:717
 bch2_sb_clean_to_text+0x138/0x240 fs/bcachefs/sb-clean.c:252
 bch2_sb_field_validate+0x201/0x2e0 fs/bcachefs/super-io.c:1244
 bch2_sb_validate+0xbb1/0xf70 fs/bcachefs/super-io.c:480
 __bch2_read_super+0xc24/0x1380 fs/bcachefs/super-io.c:837
 bch2_fs_open+0x270/0x2f80 fs/bcachefs/super.c:2032
 bch2_fs_get_tree+0x738/0x1710 fs/bcachefs/fs.c:2157
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8bbf97feba
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f8bc0785e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f8bc0785ef0 RCX: 00007f8bbf97feba
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 00007f8bc0785eb0
RBP: 00000000200000c0 R08: 00007f8bc0785ef0 R09: 0000000000800000
R10: 0000000000800000 R11: 0000000000000246 R12: 0000000020000000
R13: 00007f8bc0785eb0 R14: 0000000000005952 R15: 0000000020000040
 </TASK>

Allocated by task 5325:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:257 [inline]
 __do_kmalloc_node mm/slub.c:4264 [inline]
 __kmalloc_node_track_caller_noprof+0x225/0x440 mm/slub.c:4283
 __do_krealloc mm/slab_common.c:1220 [inline]
 krealloc_noprof+0x88/0x120 mm/slab_common.c:1269
 bch2_sb_realloc+0x2d2/0x660 fs/bcachefs/super-io.c:189
 read_one_super+0x73b/0xf40 fs/bcachefs/super-io.c:672
 __bch2_read_super+0x87c/0x1380 fs/bcachefs/super-io.c:763
 bch2_fs_open+0x270/0x2f80 fs/bcachefs/super.c:2032
 bch2_fs_get_tree+0x738/0x1710 fs/bcachefs/fs.c:2157
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888041fc4000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 0 bytes to the right of
 allocated 8192-byte region [ffff888041fc4000, ffff888041fc6000)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x41fc0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 04fff00000000040 ffff88801ac42280 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000020002 00000001f5000000 0000000000000000
head: 04fff00000000040 ffff88801ac42280 dead000000000122 0000000000000000
head: 0000000000000000 0000000000020002 00000001f5000000 0000000000000000
head: 04fff00000000003 ffffea000107f001 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5310, tgid 5310 (kworker/0:3), ts 58689494781, free_ts 58678744486
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1545 [inline]
 get_page_from_freelist+0x303f/0x3190 mm/page_alloc.c:3457
 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4733
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 alloc_slab_page+0x6a/0x140 mm/slub.c:2412
 allocate_slab+0x5a/0x2f0 mm/slub.c:2578
 new_slab mm/slub.c:2631 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3818
 __slab_alloc+0x58/0xa0 mm/slub.c:3908
 __slab_alloc_node mm/slub.c:3961 [inline]
 slab_alloc_node mm/slub.c:4122 [inline]
 __do_kmalloc_node mm/slub.c:4263 [inline]
 __kmalloc_noprof+0x25a/0x400 mm/slub.c:4276
 kmalloc_noprof include/linux/slab.h:882 [inline]
 kmalloc_array_noprof include/linux/slab.h:923 [inline]
 __sta_info_alloc+0xbcb/0x1ea0 net/mac80211/sta_info.c:616
 ieee80211_ibss_rx_no_sta+0x3c8/0x720 net/mac80211/ibss.c:1211
 ieee80211_accept_frame net/mac80211/rx.c:4469 [inline]
 ieee80211_prepare_and_rx_handle+0x228a/0x6360 net/mac80211/rx.c:5041
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5327 [inline]
 ieee80211_rx_list+0x2ce0/0x3780 net/mac80211/rx.c:5462
 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5485
 ieee80211_rx include/net/mac80211.h:5138 [inline]
 ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:441
 tasklet_action_common+0x321/0x4d0 kernel/softirq.c:784
page last free pid 5309 tgid 5309 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1108 [inline]
 free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638
 __slab_free+0x31b/0x3d0 mm/slub.c:4490
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:247 [inline]
 slab_post_alloc_hook mm/slub.c:4085 [inline]
 slab_alloc_node mm/slub.c:4134 [inline]
 __kmalloc_cache_node_noprof+0x166/0x300 mm/slub.c:4303
 kmalloc_node_noprof include/linux/slab.h:901 [inline]
 __get_vm_area_node+0x113/0x270 mm/vmalloc.c:3106
 __vmalloc_node_range_noprof+0x3a6/0x13f0 mm/vmalloc.c:3788
 __vmalloc_node_noprof mm/vmalloc.c:3893 [inline]
 vzalloc_noprof+0x79/0x90 mm/vmalloc.c:3966
 alloc_counters+0xd7/0x740 net/ipv4/netfilter/ip_tables.c:799
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:837 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1039 [inline]
 do_ip6t_get_ctl+0xecc/0x1820 net/ipv6/netfilter/ip6_tables.c:1677
 nf_getsockopt+0x299/0x2c0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x23e/0x360 net/ipv6/ipv6_sockglue.c:1493
 tcp_getsockopt+0x163/0x1c0 net/ipv4/tcp.c:4670
 do_sock_getsockopt+0x3c4/0x7e0 net/socket.c:2396
 __sys_getsockopt+0x267/0x330 net/socket.c:2425

Memory state around the buggy address:
 ffff888041fc5f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888041fc5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888041fc6000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff888041fc6080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888041fc6100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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