RDX: 00007fffe7dc5589 RSI: 000000000000000a RDI: 00007fffe7dc5580 RBP: 00007fffe7dc5580 R08: 00000000ffffffff R09: 00007fffe7dc5350 R10: 00005555566a08b3 R11: 0000000000000246 R12: 00007fe2c5ae6b24 R13: 00007fffe7dc6640 R14: 00005555566a0810 R15: 00007fffe7dc6680 ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline] BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: use-after-free in qd_unlock+0x2b/0x270 fs/gfs2/quota.c:490 Read of size 8 at addr ffff888073273090 by task syz-executor.0/5514 CPU: 0 PID: 5514 Comm: syz-executor.0 Not tainted 6.2.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x12a/0x1c0 lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:306 print_report+0x107/0x1f0 mm/kasan/report.c:417 kasan_report+0xcd/0x100 mm/kasan/report.c:517 kasan_check_range+0x2a7/0x2e0 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] qd_unlock+0x2b/0x270 fs/gfs2/quota.c:490 gfs2_quota_sync+0x389/0x6b0 fs/gfs2/quota.c:1325 gfs2_sync_fs+0x44/0x90 fs/gfs2/super.c:650 sync_filesystem+0xc4/0x180 fs/sync.c:56 generic_shutdown_super+0x65/0x2a0 fs/super.c:474 kill_block_super+0x74/0xc0 fs/super.c:1386 deactivate_locked_super+0x82/0xd0 fs/super.c:332 cleanup_mnt+0x3fe/0x480 fs/namespace.c:1291 task_work_run+0x227/0x2b0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe2c5a8d517 Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 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 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffe7dc54b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2c5a8d517 RDX: 00007fffe7dc5589 RSI: 000000000000000a RDI: 00007fffe7dc5580 RBP: 00007fffe7dc5580 R08: 00000000ffffffff R09: 00007fffe7dc5350 R10: 00005555566a08b3 R11: 0000000000000246 R12: 00007fe2c5ae6b24 R13: 00007fffe7dc6640 R14: 00005555566a0810 R15: 00007fffe7dc6680 Allocated by task 5607: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc+0x1b3/0x350 mm/slub.c:3476 kmem_cache_zalloc include/linux/slab.h:710 [inline] qd_alloc+0x4c/0x220 fs/gfs2/quota.c:216 gfs2_quota_init+0x6b6/0xe50 fs/gfs2/quota.c:1415 gfs2_make_fs_rw+0x3c8/0x500 fs/gfs2/super.c:153 gfs2_fill_super+0x1fa0/0x2300 fs/gfs2/ops_fstype.c:1274 get_tree_bdev+0x3d5/0x620 fs/super.c:1282 gfs2_get_tree+0x47/0x1a0 fs/gfs2/ops_fstype.c:1330 vfs_get_tree+0x7b/0x220 fs/super.c:1489 do_new_mount+0x1df/0x930 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x20f/0x2a0 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 21: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:518 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1807 slab_free mm/slub.c:3787 [inline] kmem_cache_free+0x94/0x1d0 mm/slub.c:3809 rcu_do_batch kernel/rcu/tree.c:2246 [inline] rcu_core+0x9c1/0x1690 kernel/rcu/tree.c:2506 __do_softirq+0x277/0x738 kernel/softirq.c:571 Last potentially related work creation: kasan_save_stack+0x2b/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:488 __call_rcu_common kernel/rcu/tree.c:2755 [inline] call_rcu+0x163/0xa70 kernel/rcu/tree.c:2868 gfs2_quota_cleanup+0x3c7/0x5e0 fs/gfs2/quota.c:1479 gfs2_make_fs_ro+0x1e6/0x530 fs/gfs2/super.c:560 signal_our_withdraw fs/gfs2/util.c:166 [inline] gfs2_withdraw+0x4b0/0x1210 fs/gfs2/util.c:351 gfs2_dinode_in fs/gfs2/glops.c:460 [inline] gfs2_inode_refresh+0xa58/0xe30 fs/gfs2/glops.c:480 gfs2_instantiate+0x107/0x1a0 fs/gfs2/glock.c:456 gfs2_glock_holder_ready fs/gfs2/glock.c:1299 [inline] gfs2_glock_wait+0x15d/0x1f0 fs/gfs2/glock.c:1319 gfs2_glock_nq_init fs/gfs2/glock.h:262 [inline] do_sync+0x3b1/0xa70 fs/gfs2/quota.c:916 gfs2_quota_sync+0x279/0x6b0 fs/gfs2/quota.c:1318 gfs2_sync_fs+0x44/0x90 fs/gfs2/super.c:650 sync_filesystem+0xc4/0x180 fs/sync.c:56 generic_shutdown_super+0x65/0x2a0 fs/super.c:474 kill_block_super+0x74/0xc0 fs/super.c:1386 deactivate_locked_super+0x82/0xd0 fs/super.c:332 cleanup_mnt+0x3fe/0x480 fs/namespace.c:1291 task_work_run+0x227/0x2b0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:171 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:296 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888073273000 which belongs to the cache gfs2_quotad of size 272 The buggy address is located 144 bytes inside of 272-byte region [ffff888073273000, ffff888073273110) The buggy address belongs to the physical page: page:ffffea0001cc9cc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x73273 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffff88801a84c780 dead000000000122 0000000000000000 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 5607, tgid 5606 (syz-executor.0), ts 77117481266, free_ts 76588746031 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549 alloc_slab_page+0xbd/0x190 mm/slub.c:1851 allocate_slab+0x5e/0x3c0 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3193 __slab_alloc mm/slub.c:3292 [inline] __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] slab_alloc mm/slub.c:3460 [inline] __kmem_cache_alloc_lru mm/slub.c:3467 [inline] kmem_cache_alloc+0x268/0x350 mm/slub.c:3476 kmem_cache_zalloc include/linux/slab.h:710 [inline] qd_alloc+0x4c/0x220 fs/gfs2/quota.c:216 gfs2_quota_init+0x6b6/0xe50 fs/gfs2/quota.c:1415 gfs2_make_fs_rw+0x3c8/0x500 fs/gfs2/super.c:153 gfs2_fill_super+0x1fa0/0x2300 fs/gfs2/ops_fstype.c:1274 get_tree_bdev+0x3d5/0x620 fs/super.c:1282 gfs2_get_tree+0x47/0x1a0 fs/gfs2/ops_fstype.c:1330 vfs_get_tree+0x7b/0x220 fs/super.c:1489 do_new_mount+0x1df/0x930 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x20f/0x2a0 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1446 [inline] free_pcp_prepare+0x751/0x780 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x19/0x4c0 mm/page_alloc.c:3464 discard_slab mm/slub.c:2098 [inline] __unfreeze_partials+0x1a5/0x1e0 mm/slub.c:2637 put_cpu_partial+0x106/0x170 mm/slub.c:2713 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:761 [inline] slab_alloc_node mm/slub.c:3452 [inline] __kmem_cache_alloc_node+0x1e0/0x340 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc_node_track_caller+0x9c/0x190 mm/slab_common.c:988 kstrdup+0x2e/0x60 mm/util.c:61 bprm_change_interp+0x6d/0xa0 fs/exec.c:1546 load_script+0x45d/0x5d0 fs/binfmt_script.c:125 search_binary_handler fs/exec.c:1735 [inline] exec_binprm fs/exec.c:1777 [inline] bprm_execve+0x901/0x1250 fs/exec.c:1851 do_execveat_common+0x445/0x610 fs/exec.c:1956 do_execve fs/exec.c:2030 [inline] __do_sys_execve fs/exec.c:2106 [inline] __se_sys_execve fs/exec.c:2101 [inline] __x64_sys_execve+0x89/0xa0 fs/exec.c:2101 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 Memory state around the buggy address: ffff888073272f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888073273000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888073273080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888073273100: fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888073273180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================