==================================================================
BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline]
BUG: KASAN: slab-use-after-free in gfs2_discard fs/gfs2/aops.c:616 [inline]
BUG: KASAN: slab-use-after-free in gfs2_invalidate_folio+0x718/0x820 fs/gfs2/aops.c:654
Read of size 8 at addr ffff88802d4b7168 by task syz-executor.0/5390

CPU: 2 PID: 5390 Comm: syz-executor.0 Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #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:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:488
 kasan_report+0xd9/0x110 mm/kasan/report.c:601
 list_empty include/linux/list.h:373 [inline]
 gfs2_discard fs/gfs2/aops.c:616 [inline]
 gfs2_invalidate_folio+0x718/0x820 fs/gfs2/aops.c:654
 folio_invalidate mm/truncate.c:158 [inline]
 truncate_cleanup_folio+0x37d/0x430 mm/truncate.c:178
 truncate_inode_pages_range+0x271/0xe80 mm/truncate.c:358
 gfs2_evict_inode+0x75b/0x1460 fs/gfs2/super.c:1508
 evict+0x2ed/0x6c0 fs/inode.c:667
 iput_final fs/inode.c:1741 [inline]
 iput.part.0+0x5a8/0x7f0 fs/inode.c:1767
 iput+0x5c/0x80 fs/inode.c:1757
 gfs2_put_super+0x2b8/0x750 fs/gfs2/super.c:629
 generic_shutdown_super+0x159/0x3d0 fs/super.c:642
 kill_block_super+0x3b/0x90 fs/super.c:1685
 gfs2_kill_sb+0x360/0x410 fs/gfs2/ops_fstype.c:1785
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
 deactivate_super+0xde/0x100 fs/super.c:506
 cleanup_mnt+0x222/0x450 fs/namespace.c:1267
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x275/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e0ae7f197
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe34b26e38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5e0ae7f197
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe34b26ef0
RBP: 00007ffe34b26ef0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe34b27fb0
R13: 00007f5e0aec93b9 R14: 0000000000018bff R15: 0000000000000001
 </TASK>

Allocated by task 5390:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3940 [inline]
 slab_alloc_node mm/slub.c:4002 [inline]
 kmem_cache_alloc_noprof+0x121/0x2f0 mm/slub.c:4009
 gfs2_alloc_bufdata fs/gfs2/trans.c:168 [inline]
 gfs2_trans_add_data+0x4b3/0x7f0 fs/gfs2/trans.c:209
 gfs2_unstuffer_folio fs/gfs2/bmap.c:81 [inline]
 __gfs2_unstuff_inode fs/gfs2/bmap.c:119 [inline]
 gfs2_unstuff_dinode+0xad9/0x1460 fs/gfs2/bmap.c:166
 gfs2_adjust_quota+0x124/0xb10 fs/gfs2/quota.c:879
 do_sync+0xa73/0xd30 fs/gfs2/quota.c:990
 gfs2_quota_sync+0x419/0x630 fs/gfs2/quota.c:1370
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0x10d/0x290 fs/sync.c:56
 generic_shutdown_super+0x7e/0x3d0 fs/super.c:621
 kill_block_super+0x3b/0x90 fs/super.c:1685
 gfs2_kill_sb+0x360/0x410 fs/gfs2/ops_fstype.c:1785
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
 deactivate_super+0xde/0x100 fs/super.c:506
 cleanup_mnt+0x222/0x450 fs/namespace.c:1267
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x275/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5390:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2196 [inline]
 slab_free mm/slub.c:4438 [inline]
 kmem_cache_free+0x12f/0x3a0 mm/slub.c:4513
 trans_drain fs/gfs2/log.c:1028 [inline]
 gfs2_log_flush+0x1545/0x29a0 fs/gfs2/log.c:1168
 do_sync+0x550/0xd30 fs/gfs2/quota.c:1010
 gfs2_quota_sync+0x419/0x630 fs/gfs2/quota.c:1370
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0x10d/0x290 fs/sync.c:56
 generic_shutdown_super+0x7e/0x3d0 fs/super.c:621
 kill_block_super+0x3b/0x90 fs/super.c:1685
 gfs2_kill_sb+0x360/0x410 fs/gfs2/ops_fstype.c:1785
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
 deactivate_super+0xde/0x100 fs/super.c:506
 cleanup_mnt+0x222/0x450 fs/namespace.c:1267
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x275/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88802d4b7150
 which belongs to the cache gfs2_bufdata of size 80
The buggy address is located 24 bytes inside of
 freed 80-byte region [ffff88802d4b7150, ffff88802d4b71a0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2d4b7
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff88801cf05e00 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080240024 00000001ffffefff 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 0x152c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 5390, tgid 5390 (syz-executor.0), ts 102606108629, free_ts 102598932014
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1473
 prep_new_page mm/page_alloc.c:1481 [inline]
 get_page_from_freelist+0x1353/0x2e50 mm/page_alloc.c:3425
 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4683
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x56/0x110 mm/slub.c:2265
 allocate_slab mm/slub.c:2428 [inline]
 new_slab+0x84/0x260 mm/slub.c:2481
 ___slab_alloc+0xdac/0x1870 mm/slub.c:3667
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757
 __slab_alloc_node mm/slub.c:3810 [inline]
 slab_alloc_node mm/slub.c:3990 [inline]
 kmem_cache_alloc_noprof+0x2a7/0x2f0 mm/slub.c:4009
 gfs2_alloc_bufdata fs/gfs2/trans.c:168 [inline]
 gfs2_trans_add_meta+0xade/0xf50 fs/gfs2/trans.c:251
 gfs2_alloc_extent fs/gfs2/rgrp.c:2239 [inline]
 gfs2_alloc_blocks+0x46c/0x19c0 fs/gfs2/rgrp.c:2449
 __gfs2_unstuff_inode fs/gfs2/bmap.c:107 [inline]
 gfs2_unstuff_dinode+0x499/0x1460 fs/gfs2/bmap.c:166
 gfs2_adjust_quota+0x124/0xb10 fs/gfs2/quota.c:879
 do_sync+0xa73/0xd30 fs/gfs2/quota.c:990
 gfs2_quota_sync+0x419/0x630 fs/gfs2/quota.c:1370
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0x10d/0x290 fs/sync.c:56
page last free pid 5390 tgid 5390 stack trace:
 create_dummy_stack mm/page_owner.c:94 [inline]
 register_dummy_stack+0x8a/0xd0 mm/page_owner.c:100
 init_page_owner+0x48/0xbf0 mm/page_owner.c:118
 invoke_init_callbacks mm/page_ext.c:148 [inline]
 page_ext_init+0x6af/0xaa0 mm/page_ext.c:493
 mm_core_init+0x68d/0x740 mm/mm_init.c:2725

Memory state around the buggy address:
 ffff88802d4b7000: fa fb fb fb fb fb fb fb fb fb fc fc fc fc fa fb
 ffff88802d4b7080: fb fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb
>ffff88802d4b7100: fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb
                                                          ^
 ffff88802d4b7180: fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb
 ffff88802d4b7200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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