================================================================== BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline] BUG: KASAN: slab-use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: slab-use-after-free in mapping_unevictable include/linux/pagemap.h:253 [inline] BUG: KASAN: slab-use-after-free in folio_evictable+0x7d/0x270 mm/internal.h:156 Read of size 8 at addr ffff888051059980 by task kswapd1/114 CPU: 0 PID: 114 Comm: kswapd1 Not tainted 6.5.0-rc7-syzkaller-00190-g85eb043618bb #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0xc4/0x620 mm/kasan/report.c:475 kasan_report+0xda/0x110 mm/kasan/report.c:588 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0xef/0x190 mm/kasan/generic.c:187 instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] mapping_unevictable include/linux/pagemap.h:253 [inline] folio_evictable+0x7d/0x270 mm/internal.h:156 sort_folio mm/vmscan.c:4908 [inline] scan_folios mm/vmscan.c:5024 [inline] isolate_folios+0xcda/0x39f0 mm/vmscan.c:5140 evict_folios+0x1a2/0x18f0 mm/vmscan.c:5171 try_to_shrink_lruvec+0x769/0xb00 mm/vmscan.c:5359 shrink_one+0x45f/0x700 mm/vmscan.c:5403 shrink_many mm/vmscan.c:5457 [inline] lru_gen_shrink_node mm/vmscan.c:5574 [inline] shrink_node+0x20c2/0x3740 mm/vmscan.c:6514 kswapd_shrink_node mm/vmscan.c:7319 [inline] balance_pgdat+0xa37/0x1b90 mm/vmscan.c:7509 kswapd+0x5be/0xbf0 mm/vmscan.c:7769 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 Allocated by task 14760: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x172/0x3b0 mm/slub.c:3494 gfs2_glock_get+0x209/0x12f0 fs/gfs2/glock.c:1167 gfs2_inode_lookup+0x26f/0x890 fs/gfs2/inode.c:135 gfs2_dir_search+0x228/0x2e0 fs/gfs2/dir.c:1664 gfs2_lookupi+0x4b6/0x6e0 fs/gfs2/inode.c:332 gfs2_jindex_hold fs/gfs2/ops_fstype.c:608 [inline] init_journal fs/gfs2/ops_fstype.c:750 [inline] init_inodes+0x858/0x2e30 fs/gfs2/ops_fstype.c:885 gfs2_fill_super+0x1a9e/0x2b10 fs/gfs2/ops_fstype.c:1248 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318 gfs2_get_tree+0x4e/0x280 fs/gfs2/ops_fstype.c:1333 vfs_get_tree+0x88/0x350 fs/super.c:1519 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __ia32_sys_mount+0x291/0x310 fs/namespace.c:3861 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 __call_rcu_common.constprop.0+0x9a/0x790 kernel/rcu/tree.c:2649 gfs2_glock_free+0x8f5/0x1350 fs/gfs2/glock.c:177 gfs2_glock_put+0x33/0x40 fs/gfs2/glock.c:307 gfs2_glock_put_eventually fs/gfs2/super.c:1278 [inline] gfs2_evict_inode+0xae9/0x1f60 fs/gfs2/super.c:1560 evict+0x2ed/0x6b0 fs/inode.c:664 iput_final fs/inode.c:1788 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1814 iput+0x5c/0x80 fs/inode.c:1804 gfs2_jindex_free+0x397/0x540 fs/gfs2/super.c:75 init_journal fs/gfs2/ops_fstype.c:867 [inline] init_inodes+0x131e/0x2e30 fs/gfs2/ops_fstype.c:885 gfs2_fill_super+0x1a9e/0x2b10 fs/gfs2/ops_fstype.c:1248 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318 gfs2_get_tree+0x4e/0x280 fs/gfs2/ops_fstype.c:1333 vfs_get_tree+0x88/0x350 fs/super.c:1519 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __ia32_sys_mount+0x291/0x310 fs/namespace.c:3861 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Second to last potentially related work creation: kasan_save_stack+0x33/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:492 insert_work+0x4a/0x330 kernel/workqueue.c:1556 __queue_work+0x5f5/0x1040 kernel/workqueue.c:1717 __queue_delayed_work+0x1bf/0x260 kernel/workqueue.c:1867 queue_delayed_work_on+0x106/0x130 kernel/workqueue.c:1903 queue_delayed_work include/linux/workqueue.h:521 [inline] __gfs2_glock_queue_work+0x28/0xb0 fs/gfs2/glock.c:252 gfs2_glock_queue_work fs/gfs2/glock.c:266 [inline] do_xmote+0xa19/0xde0 fs/gfs2/glock.c:801 run_queue+0x2fa/0x650 fs/gfs2/glock.c:844 glock_work_func+0x103/0x390 fs/gfs2/glock.c:1076 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2600 worker_thread+0x687/0x1110 kernel/workqueue.c:2751 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304 The buggy address belongs to the object at ffff888051059520 which belongs to the cache gfs2_glock(aspace) of size 1224 The buggy address is located 1120 bytes inside of freed 1224-byte region [ffff888051059520, ffff8880510599e8) The buggy address belongs to the physical page: page:ffffea0001441600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88805105bf60 pfn:0x51058 head:ffffea0001441600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4fff00000010200(slab|head|node=1|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 04fff00000010200 ffff8880136dd040 dead000000000122 0000000000000000 raw: ffff88805105bf60 000000008018000f 00000001ffffffff 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 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5098, tgid 5097 (syz-executor.1), ts 1400098578339, free_ts 1399942314426 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2d2/0x350 mm/page_alloc.c:1570 prep_new_page mm/page_alloc.c:1577 [inline] get_page_from_freelist+0x10a9/0x31e0 mm/page_alloc.c:3221 __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477 alloc_pages+0x1a9/0x270 mm/mempolicy.c:2298 alloc_slab_page mm/slub.c:1862 [inline] allocate_slab+0x24e/0x380 mm/slub.c:2009 new_slab mm/slub.c:2062 [inline] ___slab_alloc+0x8bc/0x1570 mm/slub.c:3215 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314 __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x392/0x3b0 mm/slub.c:3494 gfs2_glock_get+0x209/0x12f0 fs/gfs2/glock.c:1167 gfs2_inode_lookup+0x26f/0x890 fs/gfs2/inode.c:135 gfs2_dir_search+0x228/0x2e0 fs/gfs2/dir.c:1664 gfs2_lookupi+0x4b6/0x6e0 fs/gfs2/inode.c:332 gfs2_lookup_simple+0xa6/0xf0 fs/gfs2/inode.c:273 init_statfs fs/gfs2/ops_fstype.c:651 [inline] init_journal fs/gfs2/ops_fstype.c:817 [inline] init_inodes+0xf52/0x2e30 fs/gfs2/ops_fstype.c:885 gfs2_fill_super+0x1a9e/0x2b10 fs/gfs2/ops_fstype.c:1248 get_tree_bdev+0x43e/0x7d0 fs/super.c:1318 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1161 [inline] free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348 free_unref_page+0x33/0x3b0 mm/page_alloc.c:2443 __unfreeze_partials+0x21d/0x240 mm/slub.c:2647 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x18b/0x1d0 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x65/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3470 [inline] __kmem_cache_alloc_node+0x19b/0x350 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc_node+0x4f/0x100 mm/slab_common.c:992 kmalloc_array_node include/linux/slab.h:680 [inline] kcalloc_node include/linux/slab.h:685 [inline] memcg_alloc_slab_cgroups+0xa9/0x170 mm/memcontrol.c:2899 account_slab mm/slab.h:636 [inline] allocate_slab+0x2c7/0x380 mm/slub.c:2027 new_slab mm/slub.c:2062 [inline] ___slab_alloc+0x8bc/0x1570 mm/slub.c:3215 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314 __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] kmem_cache_alloc_node+0x137/0x3f0 mm/slub.c:3515 alloc_task_struct_node kernel/fork.c:173 [inline] dup_task_struct kernel/fork.c:1105 [inline] copy_process+0x41c/0x7400 kernel/fork.c:2330 kernel_clone+0xfd/0x8f0 kernel/fork.c:2912 __do_sys_clone3+0x1f1/0x260 kernel/fork.c:3213 Memory state around the buggy address: ffff888051059880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888051059900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888051059980: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc ^ ffff888051059a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fb fb fb ffff888051059a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================