================================================================== BUG: KASAN: double-free in slab_free mm/slub.c:3786 [inline] BUG: KASAN: double-free in __kmem_cache_free+0xaf/0x2d0 mm/slub.c:3799 Free of addr ffff8880792fba00 by task kswapd0/112 CPU: 2 PID: 112 Comm: kswapd0 Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:351 print_report mm/kasan/report.c:462 [inline] kasan_report_invalid_free+0xe8/0x100 mm/kasan/report.c:537 ____kasan_slab_free+0x185/0x1c0 mm/kasan/common.c:225 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807 slab_free mm/slub.c:3786 [inline] __kmem_cache_free+0xaf/0x2d0 mm/slub.c:3799 hfs_release_folio+0x462/0x570 fs/hfs/inode.c:123 filemap_release_folio+0x13f/0x1b0 mm/filemap.c:4124 shrink_folio_list+0x2f51/0x3dc0 mm/vmscan.c:2077 evict_folios+0x794/0x1940 mm/vmscan.c:5158 try_to_shrink_lruvec+0x82c/0xb90 mm/vmscan.c:5334 shrink_one+0x462/0x710 mm/vmscan.c:5378 shrink_many mm/vmscan.c:5430 [inline] lru_gen_shrink_node mm/vmscan.c:5547 [inline] shrink_node+0x1fd5/0x3500 mm/vmscan.c:6488 kswapd_shrink_node mm/vmscan.c:7288 [inline] balance_pgdat+0xa02/0x1ac0 mm/vmscan.c:7478 kswapd+0x677/0xd60 mm/vmscan.c:7738 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Allocated by task 29979: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] ____kasan_kmalloc mm/kasan/common.c:333 [inline] __kasan_kmalloc+0xa2/0xb0 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:966 [inline] __kmalloc+0x5e/0x190 mm/slab_common.c:979 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:680 [inline] __hfs_bnode_create+0x107/0x820 fs/hfs/bnode.c:259 hfs_bnode_find+0x423/0xc60 fs/hfs/bnode.c:335 hfs_brec_find+0x299/0x500 fs/hfs/bfind.c:126 hfs_brec_read+0x25/0x120 fs/hfs/bfind.c:165 hfs_cat_find_brec+0x143/0x350 fs/hfs/catalog.c:194 hfs_fill_super+0xfbd/0x1480 fs/hfs/super.c:419 mount_bdev+0x358/0x420 fs/super.c:1380 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x350 fs/super.c:1510 do_new_mount fs/namespace.c:3039 [inline] path_mount+0x134b/0x1e40 fs/namespace.c:3369 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __ia32_sys_mount+0x282/0x300 fs/namespace.c:3568 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 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 Freed by task 5165: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:521 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807 slab_free mm/slub.c:3786 [inline] __kmem_cache_free+0xaf/0x2d0 mm/slub.c:3799 hfs_btree_close+0xab/0x390 fs/hfs/btree.c:154 hfs_mdb_put+0xbf/0x380 fs/hfs/mdb.c:360 generic_shutdown_super+0x158/0x480 fs/super.c:500 kill_block_super+0xa1/0x100 fs/super.c:1407 deactivate_locked_super+0x98/0x160 fs/super.c:331 deactivate_super+0xb1/0xd0 fs/super.c:362 cleanup_mnt+0x2ae/0x3d0 fs/namespace.c:1177 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 __do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181 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+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491 insert_work+0x48/0x360 kernel/workqueue.c:1365 __queue_work+0x625/0x1120 kernel/workqueue.c:1526 queue_work_on+0xf2/0x110 kernel/workqueue.c:1554 queue_work include/linux/workqueue.h:505 [inline] call_usermodehelper_exec+0x32d/0x4c0 kernel/umh.c:434 call_modprobe kernel/module/kmod.c:103 [inline] __request_module+0x3b9/0x640 kernel/module/kmod.c:173 load_nls fs/nls/nls_base.c:293 [inline] load_nls+0x44/0x60 fs/nls/nls_base.c:291 parse_options fs/hfs/super.c:326 [inline] hfs_fill_super+0xb32/0x1480 fs/hfs/super.c:396 mount_bdev+0x358/0x420 fs/super.c:1380 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x350 fs/super.c:1510 do_new_mount fs/namespace.c:3039 [inline] path_mount+0x134b/0x1e40 fs/namespace.c:3369 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __ia32_sys_mount+0x282/0x300 fs/namespace.c:3568 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 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+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:491 insert_work+0x48/0x360 kernel/workqueue.c:1365 __queue_work+0x625/0x1120 kernel/workqueue.c:1526 queue_work_on+0xf2/0x110 kernel/workqueue.c:1554 queue_work include/linux/workqueue.h:505 [inline] call_usermodehelper_exec+0x32d/0x4c0 kernel/umh.c:434 call_modprobe kernel/module/kmod.c:103 [inline] __request_module+0x3b9/0x640 kernel/module/kmod.c:173 load_nls fs/nls/nls_base.c:293 [inline] load_nls+0x44/0x60 fs/nls/nls_base.c:291 parse_options fs/hfs/super.c:326 [inline] hfs_fill_super+0xb32/0x1480 fs/hfs/super.c:396 mount_bdev+0x358/0x420 fs/super.c:1380 legacy_get_tree+0x109/0x220 fs/fs_context.c:610 vfs_get_tree+0x8d/0x350 fs/super.c:1510 do_new_mount fs/namespace.c:3039 [inline] path_mount+0x134b/0x1e40 fs/namespace.c:3369 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __ia32_sys_mount+0x282/0x300 fs/namespace.c:3568 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 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 The buggy address belongs to the object at ffff8880792fba00 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 0 bytes inside of 192-byte region [ffff8880792fba00, ffff8880792fbac0) The buggy address belongs to the physical page: page:ffffea0001e4bec0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x792fb anon flags: 0x4fff00000000200(slab|node=1|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 04fff00000000200 ffff888012442a00 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000100010 00000001ffffffff 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 0x112c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 5168, tgid 5168 (syz-executor.3), ts 1008272554226, free_ts 1007893063685 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1731 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0xf41/0x2c00 mm/page_alloc.c:3502 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4768 __alloc_pages_node include/linux/gfp.h:237 [inline] alloc_slab_page mm/slub.c:1853 [inline] allocate_slab+0xa7/0x390 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3192 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3291 __slab_alloc_node mm/slub.c:3344 [inline] slab_alloc_node mm/slub.c:3441 [inline] __kmem_cache_alloc_node+0x136/0x320 mm/slub.c:3490 __do_kmalloc_node mm/slab_common.c:965 [inline] __kmalloc_node+0x51/0x1a0 mm/slab_common.c:973 kmalloc_array_node include/linux/slab.h:657 [inline] kcalloc_node include/linux/slab.h:662 [inline] memcg_alloc_slab_cgroups+0x8f/0x150 mm/memcontrol.c:2928 memcg_slab_post_alloc_hook+0xa9/0x390 mm/slab.h:491 slab_post_alloc_hook mm/slab.h:719 [inline] slab_alloc_node mm/slub.c:3451 [inline] slab_alloc mm/slub.c:3459 [inline] __kmem_cache_alloc_lru mm/slub.c:3466 [inline] kmem_cache_alloc+0x1af/0x3b0 mm/slub.c:3475 kmem_cache_zalloc include/linux/slab.h:670 [inline] alloc_buffer_head+0x24/0x150 fs/buffer.c:2974 folio_alloc_buffers+0x2f2/0x810 fs/buffer.c:871 alloc_page_buffers fs/buffer.c:906 [inline] grow_dev_page fs/buffer.c:1014 [inline] grow_buffers fs/buffer.c:1060 [inline] __getblk_slow+0x612/0x1230 fs/buffer.c:1087 __getblk_gfp+0x72/0x80 fs/buffer.c:1382 sb_getblk include/linux/buffer_head.h:365 [inline] ext4_getblk+0x211/0x850 fs/ext4/inode.c:845 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1302 [inline] free_unref_page_prepare+0x62e/0xcb0 mm/page_alloc.c:2564 free_unref_page_list+0xe3/0xa70 mm/page_alloc.c:2705 shrink_folio_list+0x283d/0x3dc0 mm/vmscan.c:2196 evict_folios+0x794/0x1940 mm/vmscan.c:5158 try_to_shrink_lruvec+0x82c/0xb90 mm/vmscan.c:5334 shrink_one+0x462/0x710 mm/vmscan.c:5378 shrink_many mm/vmscan.c:5430 [inline] lru_gen_shrink_node mm/vmscan.c:5547 [inline] shrink_node+0x1fd5/0x3500 mm/vmscan.c:6488 kswapd_shrink_node mm/vmscan.c:7288 [inline] balance_pgdat+0xa02/0x1ac0 mm/vmscan.c:7478 kswapd+0x677/0xd60 mm/vmscan.c:7738 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Memory state around the buggy address: ffff8880792fb900: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880792fb980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff8880792fba00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880792fba80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8880792fbb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================