loop3: detected capacity change from 0 to 14901 jfs_mount: diMount failed w/rc = -5 ================================================================== BUG: KASAN: use-after-free in diFree+0x1fbb/0x2fb0 fs/jfs/jfs_imap.c:871 Read of size 4 at addr ffff8880653a0004 by task syz-executor.3/31881 CPU: 0 PID: 31881 Comm: syz-executor.3 Not tainted 6.4.0-rc1-syzkaller-00133-g9a48d6046722 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 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+0x274/0x3a0 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: 0033:0x7fb7f6e8d69a 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:00007fb7f7cd3f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000022ea RCX: 00007fb7f6e8d69a RDX: 0000000020005d00 RSI: 0000000020000040 RDI: 00007fb7f7cd3fe0 RBP: 00007fb7f7cd4020 R08: 00007fb7f7cd4020 R09: 0000000000008501 R10: 0000000000008501 R11: 0000000000000202 R12: 0000000020005d00 R13: 0000000020000040 R14: 00007fb7f7cd3fe0 R15: 0000000020000200 The buggy address belongs to the physical page: page:ffffea000194e800 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x653a0 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffff8880b99432e0 ffff8880b99432e0 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 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 0x1d2800(GFP_NOWAIT|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 31889, tgid 31848 (syz-executor.1), ts 1471036669542, free_ts 1465146216792 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 mempool_alloc+0x194/0x580 mm/mempool.c:398 bvec_alloc block/bio.c:211 [inline] bio_alloc_bioset+0x3ea/0x13f0 block/bio.c:558 __bio_alloc+0x406/0x6e0 fs/f2fs/data.c:460 f2fs_submit_page_write+0xf8d/0x1600 fs/f2fs/data.c:1020 do_write_page+0x3fe/0x6e0 fs/f2fs/segment.c:3468 f2fs_do_write_node_page+0xf0/0x1a0 fs/f2fs/segment.c:3511 __write_node_page+0xad9/0x2130 fs/f2fs/node.c:1656 f2fs_fsync_node_pages+0x17cd/0x22e0 fs/f2fs/node.c:1810 f2fs_do_sync_file+0x11ac/0x1ae0 fs/f2fs/file.c:338 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 getname_flags+0xbc/0x4e0 fs/namei.c:140 getname fs/namei.c:219 [inline] __do_sys_unlink fs/namei.c:4441 [inline] __se_sys_unlink fs/namei.c:4439 [inline] __x64_sys_unlink+0x3c/0x50 fs/namei.c:4439 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 Memory state around the buggy address: ffff88806539ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88806539ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff8880653a0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880653a0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880653a0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================