==================================================================
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:587 [inline]
BUG: KASAN: slab-use-after-free in gfs2_invalidate_folio+0x72d/0x840 fs/gfs2/aops.c:625
Read of size 8 at addr ffff8880225fc168 by task syz-executor.0/6069

CPU: 2 UID: 0 PID: 6069 Comm: syz-executor.0 Not tainted 6.15.0-rc2-syzkaller-g834a4a689699 #0 PREEMPT(full) 
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+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0xc3/0x670 mm/kasan/report.c:521
 kasan_report+0xe0/0x110 mm/kasan/report.c:634
 list_empty include/linux/list.h:373 [inline]
 gfs2_discard fs/gfs2/aops.c:587 [inline]
 gfs2_invalidate_folio+0x72d/0x840 fs/gfs2/aops.c:625
 folio_invalidate mm/truncate.c:140 [inline]
 truncate_cleanup_folio+0x2f3/0x490 mm/truncate.c:160
 truncate_inode_pages_range+0x24e/0xe30 mm/truncate.c:375
 gfs2_evict_inode+0x73c/0x16e0 fs/gfs2/super.c:1517
 evict+0x3e3/0x920 fs/inode.c:810
 iput_final fs/inode.c:1898 [inline]
 iput fs/inode.c:1924 [inline]
 iput+0x521/0x880 fs/inode.c:1910
 gfs2_put_super+0x2b8/0x750 fs/gfs2/super.c:629
 generic_shutdown_super+0x153/0x390 fs/super.c:642
 kill_block_super+0x3b/0x90 fs/super.c:1710
 gfs2_kill_sb+0x371/0x420 fs/gfs2/ops_fstype.c:1793
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0xde/0x100 fs/super.c:502
 cleanup_mnt+0x225/0x450 fs/namespace.c:1435
 task_work_run+0x14d/0x240 kernel/task_work.c:227
 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0bdde7f197
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:00007ffdfee0cd08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f0bdde7f197
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdfee0cdc0
RBP: 00007ffdfee0cdc0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdfee0de80
R13: 00007f0bddec93b9 R14: 0000000000010bd2 R15: 0000000000000001
 </TASK>

Allocated by task 6069:
 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:319 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4151 [inline]
 slab_alloc_node mm/slub.c:4200 [inline]
 kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4207
 gfs2_alloc_bufdata fs/gfs2/trans.c:168 [inline]
 gfs2_trans_add_data+0x4b2/0x7f0 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+0xad2/0x1370 fs/gfs2/bmap.c:166
 gfs2_adjust_quota+0x125/0xc00 fs/gfs2/quota.c:847
 do_sync+0xad1/0xd60 fs/gfs2/quota.c:961
 gfs2_quota_sync+0x322/0x570 fs/gfs2/quota.c:1357
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0x10e/0x290 fs/sync.c:56
 generic_shutdown_super+0x74/0x390 fs/super.c:621
 kill_block_super+0x3b/0x90 fs/super.c:1710
 gfs2_kill_sb+0x371/0x420 fs/gfs2/ops_fstype.c:1793
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0xde/0x100 fs/super.c:502
 cleanup_mnt+0x225/0x450 fs/namespace.c:1435
 task_work_run+0x14d/0x240 kernel/task_work.c:227
 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 6069:
 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:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2389 [inline]
 slab_free mm/slub.c:4646 [inline]
 kmem_cache_free+0x2d4/0x4d0 mm/slub.c:4748
 trans_drain fs/gfs2/log.c:1020 [inline]
 gfs2_log_flush+0x154b/0x29a0 fs/gfs2/log.c:1160
 do_sync+0x56b/0xd60 fs/gfs2/quota.c:981
 gfs2_quota_sync+0x322/0x570 fs/gfs2/quota.c:1357
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0x10e/0x290 fs/sync.c:56
 generic_shutdown_super+0x74/0x390 fs/super.c:621
 kill_block_super+0x3b/0x90 fs/super.c:1710
 gfs2_kill_sb+0x371/0x420 fs/gfs2/ops_fstype.c:1793
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0xde/0x100 fs/super.c:502
 cleanup_mnt+0x225/0x450 fs/namespace.c:1435
 task_work_run+0x14d/0x240 kernel/task_work.c:227
 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880225fc150
 which belongs to the cache gfs2_bufdata of size 80
The buggy address is located 24 bytes inside of
 freed 80-byte region [ffff8880225fc150, ffff8880225fc1a0)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x225fc
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000000 ffff8881006d0000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080240024 00000000f5000000 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 0x52c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 6069, tgid 6069 (syz-executor.0), ts 69250944815, free_ts 69215424632
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1717
 prep_new_page mm/page_alloc.c:1725 [inline]
 get_page_from_freelist+0x1193/0x39b0 mm/page_alloc.c:3652
 __alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4934
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301
 alloc_slab_page mm/slub.c:2459 [inline]
 allocate_slab mm/slub.c:2623 [inline]
 new_slab+0x23c/0x330 mm/slub.c:2676
 ___slab_alloc+0xd9c/0x1940 mm/slub.c:3862
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3952
 __slab_alloc_node mm/slub.c:4027 [inline]
 slab_alloc_node mm/slub.c:4188 [inline]
 kmem_cache_alloc_noprof+0xef/0x3b0 mm/slub.c:4207
 gfs2_alloc_bufdata fs/gfs2/trans.c:168 [inline]
 gfs2_trans_add_meta+0x931/0xdd0 fs/gfs2/trans.c:251
 gfs2_alloc_extent fs/gfs2/rgrp.c:2237 [inline]
 gfs2_alloc_blocks+0x46b/0x19c0 fs/gfs2/rgrp.c:2447
 __gfs2_unstuff_inode fs/gfs2/bmap.c:107 [inline]
 gfs2_unstuff_dinode+0x492/0x1370 fs/gfs2/bmap.c:166
 gfs2_adjust_quota+0x125/0xc00 fs/gfs2/quota.c:847
 do_sync+0xad1/0xd60 fs/gfs2/quota.c:961
 gfs2_quota_sync+0x322/0x570 fs/gfs2/quota.c:1357
 gfs2_sync_fs+0x44/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0x10e/0x290 fs/sync.c:56
page last free pid 6128 tgid 6126 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1262 [inline]
 __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2680
 pagetable_free include/linux/mm.h:3002 [inline]
 pagetable_dtor_free include/linux/mm.h:3100 [inline]
 __tlb_remove_table include/asm-generic/tlb.h:215 [inline]
 __tlb_remove_table_free mm/mmu_gather.c:227 [inline]
 tlb_remove_table_rcu+0x116/0x1a0 mm/mmu_gather.c:290
 rcu_do_batch kernel/rcu/tree.c:2568 [inline]
 rcu_core+0x799/0x14e0 kernel/rcu/tree.c:2824
 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702

Memory state around the buggy address:
 ffff8880225fc000: fa fb fb fb fb fb fb fb fb fb fc fc fc fc fa fb
 ffff8880225fc080: fb fb fb fb fb fb fb fb fc fc fc fc fa fb fb fb
>ffff8880225fc100: fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb
                                                          ^
 ffff8880225fc180: fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb fb
 ffff8880225fc200: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================