loop3: detected capacity change from 0 to 14901 jfs_mount: diMount failed w/rc = -5 ================================================================== BUG: KASAN: slab-use-after-free in diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871 Read of size 4 at addr ffff88806e318004 by task syz-executor.3/31428 CPU: 0 PID: 31428 Comm: syz-executor.3 Not tainted 6.4.0-rc6-syzkaller-00035-g15adb51c04cc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:351 [inline] print_report+0x163/0x540 mm/kasan/report.c:462 kasan_report+0x176/0x1b0 mm/kasan/report.c:572 diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871 jfs_evict_inode+0x32d/0x440 fs/jfs/inode.c:156 evict+0x2a4/0x620 fs/inode.c:665 jfs_mount+0x536/0x830 fs/jfs/jfs_mount.c:203 jfs_fill_super+0x59c/0xc50 fs/jfs/super.c:556 mount_bdev+0x2d0/0x3f0 fs/super.c:1380 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5b3d28d6ca Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 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:00007f5b3e0cdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000002358 RCX: 00007f5b3d28d6ca RDX: 0000000020005d00 RSI: 0000000020000000 RDI: 00007f5b3e0cdfe0 RBP: 00007f5b3e0ce020 R08: 00007f5b3e0ce020 R09: 0000000000000004 R10: 0000000000000004 R11: 0000000000000202 R12: 0000000020005d00 R13: 0000000020000000 R14: 00007f5b3e0cdfe0 R15: 0000000020000140 Allocated by task 5391: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:711 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+0x11f/0x2e0 mm/slub.c:3475 getname_flags+0xbc/0x4e0 fs/namei.c:140 getname fs/namei.c:219 [inline] __do_sys_rename fs/namei.c:5049 [inline] __se_sys_rename fs/namei.c:5046 [inline] __x64_sys_rename+0x6e/0x90 fs/namei.c:5046 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 5391: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4f/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3786 [inline] kmem_cache_free+0x297/0x520 mm/slub.c:3808 putname fs/namei.c:273 [inline] do_renameat2+0x1513/0x1660 fs/namei.c:5028 __do_sys_rename fs/namei.c:5048 [inline] __se_sys_rename fs/namei.c:5046 [inline] __x64_sys_rename+0x86/0x90 fs/namei.c:5046 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88806e318000 which belongs to the cache names_cache of size 4096 The buggy address is located 4 bytes inside of freed 4096-byte region [ffff88806e318000, ffff88806e319000) The buggy address belongs to the physical page: page:ffffea0001b8c600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6e318 head:ffffea0001b8c600 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000010200 ffff8881400088c0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000070007 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5391, tgid 5391 (udevd), ts 1797289275235, free_ts 1747519317015 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1731 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768 alloc_slab_page+0x6a/0x160 mm/slub.c:1851 allocate_slab mm/slub.c:1998 [inline] new_slab+0x84/0x2f0 mm/slub.c:2051 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3192 __slab_alloc mm/slub.c:3291 [inline] __slab_alloc_node mm/slub.c:3344 [inline] slab_alloc_node mm/slub.c:3441 [inline] slab_alloc mm/slub.c:3459 [inline] __kmem_cache_alloc_lru mm/slub.c:3466 [inline] kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:3475 getname_flags+0xbc/0x4e0 fs/namei.c:140 getname fs/namei.c:219 [inline] __do_sys_rename fs/namei.c:5049 [inline] __se_sys_rename fs/namei.c:5046 [inline] __x64_sys_rename+0x6e/0x90 fs/namei.c:5046 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd 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+0x903/0xa30 mm/page_alloc.c:2564 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2659 discard_slab mm/slub.c:2097 [inline] __unfreeze_partials+0x1b1/0x1f0 mm/slub.c:2636 put_cpu_partial+0x116/0x180 mm/slub.c:2712 qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:711 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+0x11f/0x2e0 mm/slub.c:3475 alloc_extent_state+0x25/0x2e0 fs/btrfs/extent-io-tree.c:146 __set_extent_bit+0x1a1/0x1ac0 fs/btrfs/extent-io-tree.c:998 set_extent_bit+0x42/0x60 fs/btrfs/extent-io-tree.c:1193 set_extent_dirty fs/btrfs/extent-io-tree.h:181 [inline] btrfs_update_block_group+0x6b6/0xb40 fs/btrfs/block-group.c:3524 do_free_extent_accounting fs/btrfs/extent-tree.c:2834 [inline] __btrfs_free_extent+0x14d8/0x2e50 fs/btrfs/extent-tree.c:3166 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1952 [inline] __btrfs_run_delayed_refs+0xef9/0x3fc0 fs/btrfs/extent-tree.c:2013 btrfs_run_delayed_refs+0x2f9/0x480 fs/btrfs/extent-tree.c:2125 Memory state around the buggy address: ffff88806e317f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88806e317f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88806e318000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88806e318080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88806e318100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================