================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:71 [inline] BUG: KASAN: use-after-free in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] BUG: KASAN: use-after-free in qd_unlock+0x30/0x2d0 fs/gfs2/quota.c:497 Read of size 8 at addr ffff888064a33090 by task syz-executor/3511 CPU: 0 PID: 3511 Comm: syz-executor Not tainted 5.15.161-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] qd_unlock+0x30/0x2d0 fs/gfs2/quota.c:497 gfs2_quota_sync+0x6e3/0x810 fs/gfs2/quota.c:1336 gfs2_sync_fs+0x49/0xb0 fs/gfs2/super.c:647 sync_filesystem+0xe8/0x220 fs/sync.c:56 generic_shutdown_super+0x6e/0x2c0 fs/super.c:448 kill_block_super+0x7a/0xe0 fs/super.c:1414 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f7192539067 Code: a8 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 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffedc1f9eb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7192539067 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffedc1f9f70 RBP: 00007ffedc1f9f70 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffedc1fb020 R13: 00007f71925a5672 R14: 0000000000010ac4 R15: 00007ffedc1fb060 Allocated by task 3777: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] qd_alloc+0x51/0x250 fs/gfs2/quota.c:216 gfs2_quota_init+0x7ea/0x1110 fs/gfs2/quota.c:1426 gfs2_make_fs_rw+0x436/0x5b0 fs/gfs2/super.c:155 gfs2_fill_super+0x23e8/0x2750 fs/gfs2/ops_fstype.c:1276 get_tree_bdev+0x3fe/0x620 fs/super.c:1312 gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1332 vfs_get_tree+0x88/0x270 fs/super.c:1517 do_new_mount+0x2ba/0xb40 fs/namespace.c:3005 do_mount fs/namespace.c:3348 [inline] __do_sys_mount fs/namespace.c:3556 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3533 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 9: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x91/0x1f0 mm/slub.c:3515 rcu_do_batch kernel/rcu/tree.c:2523 [inline] rcu_core+0xa15/0x1650 kernel/rcu/tree.c:2763 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 do_softirq+0x162/0x240 kernel/softirq.c:459 __local_bh_enable_ip+0x1b1/0x1f0 kernel/softirq.c:383 spin_unlock_bh include/linux/spinlock.h:408 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2299 [inline] batadv_tt_purge+0x4dc/0xa40 net/batman-adv/translation-table.c:3561 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 Last potentially related work creation: kasan_save_stack+0x36/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xba/0x100 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3087 gfs2_quota_cleanup+0x43e/0x6a0 fs/gfs2/quota.c:1490 gfs2_make_fs_ro+0x23b/0x5f0 fs/gfs2/super.c:557 signal_our_withdraw fs/gfs2/util.c:166 [inline] gfs2_withdraw+0x5fb/0x14e0 fs/gfs2/util.c:343 gfs2_meta_check_ii+0x6e/0x80 fs/gfs2/util.c:498 gfs2_metatype_check_i fs/gfs2/util.h:126 [inline] gfs2_rgrp_bh_get+0x35e/0x1300 fs/gfs2/rgrp.c:1223 do_promote+0x74b/0xb10 fs/gfs2/glock.c:507 finish_xmote+0x50d/0xb60 fs/gfs2/glock.c:678 do_xmote+0x775/0x10b0 fs/gfs2/glock.c:824 gfs2_glock_nq+0xc32/0x15e0 fs/gfs2/glock.c:1534 gfs2_glock_nq_init fs/gfs2/glock.h:246 [inline] gfs2_inplace_reserve+0x108a/0x3960 fs/gfs2/rgrp.c:2109 do_sync+0x646/0xc60 fs/gfs2/quota.c:951 gfs2_quota_sync+0x379/0x810 fs/gfs2/quota.c:1329 gfs2_sync_fs+0x49/0xb0 fs/gfs2/super.c:647 sync_filesystem+0xe8/0x220 fs/sync.c:56 generic_shutdown_super+0x6e/0x2c0 fs/super.c:448 kill_block_super+0x7a/0xe0 fs/super.c:1414 deactivate_locked_super+0xa0/0x110 fs/super.c:335 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143 task_work_run+0x129/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff888064a33000 which belongs to the cache gfs2_quotad of size 272 The buggy address is located 144 bytes inside of 272-byte region [ffff888064a33000, ffff888064a33110) The buggy address belongs to the page: page:ffffea0001928cc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x64a33 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888018f81a00 raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 3777, ts 72375465710, free_ts 17814015690 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5423 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] qd_alloc+0x51/0x250 fs/gfs2/quota.c:216 gfs2_quota_init+0x7ea/0x1110 fs/gfs2/quota.c:1426 gfs2_make_fs_rw+0x436/0x5b0 fs/gfs2/super.c:155 gfs2_fill_super+0x23e8/0x2750 fs/gfs2/ops_fstype.c:1276 get_tree_bdev+0x3fe/0x620 fs/super.c:1312 gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1332 vfs_get_tree+0x88/0x270 fs/super.c:1517 do_new_mount+0x2ba/0xb40 fs/namespace.c:3005 do_mount fs/namespace.c:3348 [inline] __do_sys_mount fs/namespace.c:3556 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3533 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 free_contig_range+0x95/0xf0 mm/page_alloc.c:9342 destroy_args+0xfe/0x980 mm/debug_vm_pgtable.c:1018 debug_vm_pgtable+0x40d/0x470 mm/debug_vm_pgtable.c:1331 do_one_initcall+0x22b/0x7a0 init/main.c:1302 do_initcall_level+0x157/0x210 init/main.c:1375 do_initcalls+0x49/0x90 init/main.c:1391 kernel_init_freeable+0x425/0x5c0 init/main.c:1615 kernel_init+0x19/0x290 init/main.c:1506 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 Memory state around the buggy address: ffff888064a32f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888064a33000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888064a33080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888064a33100: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888064a33180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================