... Log Wrap ... Log Wrap ... Log Wrap ... jfs_rename did not expect dtDelete to return rc = -5 ERROR: (device loop4): jfs_rename: ================================================================== BUG: KASAN: use-after-free in diWrite+0xbe6/0x1600 fs/jfs/jfs_imap.c:753 Read of size 32 at addr ffff888054f501f0 by task syz.4.306/6428 CPU: 0 PID: 6428 Comm: syz.4.306 Not tainted 6.1.146-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0xa8/0x200 mm/kasan/report.c:418 kasan_report+0x10b/0x140 mm/kasan/report.c:522 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x27b/0x290 mm/kasan/generic.c:189 memcpy+0x25/0x60 mm/kasan/shadow.c:65 diWrite+0xbe6/0x1600 fs/jfs/jfs_imap.c:753 txCommit+0x84b/0x51c0 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices+0x791/0xaa0 fs/jfs/jfs_dtree.c:2664 jfs_readdir+0x1da7/0x3b40 fs/jfs/jfs_dtree.c:3020 iterate_dir+0x218/0x560 fs/readdir.c:-1 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0xe5/0x260 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa74b18e9a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa74c090038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007fa74b3b5fa0 RCX: 00007fa74b18e9a9 RDX: 0000000000001000 RSI: 0000200000000f80 RDI: 0000000000000005 RBP: 00007fa74b210d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa74b3b5fa0 R15: 00007ffe26631bb8 Allocated by task 6397: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:689 [inline] alloc_buffer_head+0x21/0x100 fs/buffer.c:2899 alloc_page_buffers+0x309/0x940 fs/buffer.c:829 create_empty_buffers+0x36/0x7a0 fs/buffer.c:1543 create_page_buffers+0x1d4/0x4a0 fs/buffer.c:1660 __block_write_begin_int+0x1ea/0x1a70 fs/buffer.c:1970 __block_write_begin fs/buffer.c:2041 [inline] block_write_begin+0x96/0x1e0 fs/buffer.c:2102 udf_write_begin+0x31/0x70 fs/udf/inode.c:212 generic_perform_write+0x2db/0x560 mm/filemap.c:3846 __generic_file_write_iter+0x172/0x430 mm/filemap.c:3974 udf_file_write_iter+0x28c/0x650 fs/udf/file.c:164 call_write_iter include/linux/fs.h:2265 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x44c/0x960 fs/read_write.c:584 ksys_pwrite64 fs/read_write.c:699 [inline] __do_sys_pwrite64 fs/read_write.c:709 [inline] __se_sys_pwrite64 fs/read_write.c:706 [inline] __x64_sys_pwrite64+0x191/0x220 fs/read_write.c:706 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Freed by task 5915: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2d/0x50 mm/kasan/generic.c:516 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook+0x131/0x1a0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] kmem_cache_free+0xf7/0x290 mm/slub.c:3683 free_buffer_head+0x45/0xb0 fs/buffer.c:2915 try_to_free_buffers+0x257/0x520 fs/buffer.c:2856 block_invalidate_folio+0x609/0x9e0 fs/buffer.c:1526 folio_invalidate mm/truncate.c:158 [inline] truncate_cleanup_folio+0x218/0x5e0 mm/truncate.c:178 truncate_inode_pages_range+0x237/0xff0 mm/truncate.c:368 udf_evict_inode+0x22c/0x3e0 fs/udf/inode.c:157 evict+0x485/0x870 fs/inode.c:705 dispose_list fs/inode.c:738 [inline] evict_inodes+0x604/0x690 fs/inode.c:792 generic_shutdown_super+0x93/0x340 fs/super.c:480 kill_block_super+0x7c/0xe0 fs/super.c:1470 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x463/0x4f0 fs/namespace.c:1182 task_work_run+0x1ca/0x250 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff888054f501d0 which belongs to the cache buffer_head of size 168 The buggy address is located 32 bytes inside of 168-byte region [ffff888054f501d0, ffff888054f50278) The buggy address belongs to the physical page: page:ffffea000153d400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x54f50 memcg:ffff88802fa90801 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888140130b40 raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88802fa90801 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 5730, tgid 5729 (syz.0.215), ts 166401303935, free_ts 158787826703 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x1a26/0x1ac0 mm/page_alloc.c:4328 __alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5614 alloc_slab_page+0x5d/0x160 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x87/0x2c0 mm/slub.c:1992 ___slab_alloc+0xbc6/0x1220 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x1b7/0x2f0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:689 [inline] alloc_buffer_head+0x21/0x100 fs/buffer.c:2899 alloc_page_buffers+0x309/0x940 fs/buffer.c:829 grow_dev_page fs/buffer.c:965 [inline] grow_buffers fs/buffer.c:1011 [inline] __getblk_slow fs/buffer.c:1038 [inline] __getblk_gfp+0x460/0xb20 fs/buffer.c:1333 sb_getblk include/linux/buffer_head.h:356 [inline] ext4_getblk+0x25e/0x6d0 fs/ext4/inode.c:900 ext4_bread_batch+0x64/0x4a0 fs/ext4/inode.c:967 __ext4_find_entry+0x105c/0x1be0 fs/ext4/namei.c:1671 ext4_lookup_entry fs/ext4/namei.c:1774 [inline] ext4_lookup+0x144/0x6d0 fs/ext4/namei.c:1842 lookup_open fs/namei.c:3460 [inline] open_last_lookups fs/namei.c:3550 [inline] path_openat+0xfaf/0x2e70 fs/namei.c:3780 do_filp_open+0x1c1/0x3c0 fs/namei.c:3810 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3479 free_slab mm/slub.c:2031 [inline] discard_slab mm/slub.c:2037 [inline] __unfreeze_partials+0x1a5/0x200 mm/slub.c:2586 put_cpu_partial+0x17c/0x250 mm/slub.c:2662 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3422 mt_alloc_one lib/maple_tree.c:152 [inline] mas_alloc_nodes+0x2ec/0x890 lib/maple_tree.c:1277 mas_node_count_gfp lib/maple_tree.c:1359 [inline] mas_preallocate+0x161/0x3c0 lib/maple_tree.c:5807 __vma_adjust+0x2e2/0x1c50 mm/mmap.c:723 vma_merge+0x8fe/0x9c0 mm/mmap.c:-1 mprotect_fixup+0x418/0x7f0 mm/mprotect.c:605 do_mprotect_pkey+0x754/0xa40 mm/mprotect.c:792 __do_sys_mprotect mm/mprotect.c:819 [inline] __se_sys_mprotect mm/mprotect.c:816 [inline] __x64_sys_mprotect+0x7c/0x90 mm/mprotect.c:816 Memory state around the buggy address: ffff888054f50080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb ffff888054f50100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888054f50180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb ^ ffff888054f50200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc ffff888054f50280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb ==================================================================