RBP: 00007f24f0426120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007f24f1fc3f80 R15: 00007ffe72a1bcf8 ================================================================== BUG: KASAN: use-after-free in is_handle_aborted include/linux/jbd2.h:1694 [inline] BUG: KASAN: use-after-free in jbd2_journal_get_write_access+0x12f/0x140 fs/jbd2/transaction.c:1241 Read of size 4 at addr ffff8880ab906f44 by task syz-executor.4/16535 CPU: 0 PID: 16535 Comm: syz-executor.4 Not tainted 5.15.145-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 is_handle_aborted include/linux/jbd2.h:1694 [inline] jbd2_journal_get_write_access+0x12f/0x140 fs/jbd2/transaction.c:1241 __ext4_journal_get_write_access+0x257/0x6b0 fs/ext4/ext4_jbd2.c:235 ext4_reserve_inode_write+0x2bd/0x3d0 fs/ext4/inode.c:5782 __ext4_mark_inode_dirty+0x1d6/0x860 fs/ext4/inode.c:5956 ext4_symlink+0xa2f/0xed0 fs/ext4/namei.c:3463 vfs_symlink+0x2ad/0x490 fs/namei.c:4435 do_symlinkat+0x1fd/0x600 fs/namei.c:4464 __do_sys_symlinkat fs/namei.c:4481 [inline] __se_sys_symlinkat fs/namei.c:4478 [inline] __x64_sys_symlinkat+0x95/0xa0 fs/namei.c:4478 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f24f1ea4ce9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f24f04260c8 EFLAGS: 00000246 ORIG_RAX: 000000000000010a RAX: ffffffffffffffda RBX: 00007f24f1fc3f80 RCX: 00007f24f1ea4ce9 RDX: 0000000020000180 RSI: 0000000000000003 RDI: 0000000020000140 RBP: 00007f24f0426120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007f24f1fc3f80 R15: 00007ffe72a1bcf8 Allocated by task 16535: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] jbd2_alloc_handle include/linux/jbd2.h:1597 [inline] new_handle fs/jbd2/transaction.c:477 [inline] jbd2__journal_start+0x144/0x5c0 fs/jbd2/transaction.c:504 __ext4_journal_start_sb+0x175/0x370 fs/ext4/ext4_jbd2.c:105 __ext4_new_inode+0x138b/0x4430 fs/ext4/ialloc.c:1080 ext4_symlink+0x4c3/0xed0 fs/ext4/namei.c:3382 vfs_symlink+0x2ad/0x490 fs/namei.c:4435 do_symlinkat+0x1fd/0x600 fs/namei.c:4464 __do_sys_symlinkat fs/namei.c:4481 [inline] __se_sys_symlinkat fs/namei.c:4478 [inline] __x64_sys_symlinkat+0x95/0xa0 fs/namei.c:4478 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Freed by task 16535: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x91/0x1f0 mm/slub.c:3515 jbd2_free_handle include/linux/jbd2.h:1602 [inline] jbd2_journal_stop+0x8d9/0xd70 fs/jbd2/transaction.c:1964 __ext4_journal_stop+0xf8/0x190 fs/ext4/ext4_jbd2.c:127 ext4_symlink+0x5fe/0xed0 fs/ext4/namei.c:3461 vfs_symlink+0x2ad/0x490 fs/namei.c:4435 do_symlinkat+0x1fd/0x600 fs/namei.c:4464 __do_sys_symlinkat fs/namei.c:4481 [inline] __se_sys_symlinkat fs/namei.c:4478 [inline] __x64_sys_symlinkat+0x95/0xa0 fs/namei.c:4478 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff8880ab906f20 which belongs to the cache jbd2_journal_handle of size 56 The buggy address is located 36 bytes inside of 56-byte region [ffff8880ab906f20, ffff8880ab906f58) The buggy address belongs to the page: page:ffffea0002ae4180 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xab906 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888018cf1c80 raw: 0000000000000000 00000000002e002e 00000001ffffffff 0000000000000000 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 16527, ts 554274205651, free_ts 531321924673 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] jbd2_alloc_handle include/linux/jbd2.h:1597 [inline] new_handle fs/jbd2/transaction.c:477 [inline] jbd2__journal_start+0x144/0x5c0 fs/jbd2/transaction.c:504 __ext4_journal_start_sb+0x175/0x370 fs/ext4/ext4_jbd2.c:105 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_dirty_inode+0x8b/0x100 fs/ext4/inode.c:5990 __mark_inode_dirty+0x2fd/0xd60 fs/fs-writeback.c:2464 generic_update_time+0x1cb/0x1e0 fs/inode.c:1817 inode_update_time fs/inode.c:1830 [inline] file_update_time+0x3eb/0x460 fs/inode.c:2019 ext4_write_checks+0x24a/0x2c0 fs/ext4/file.c:247 ext4_buffered_write_iter+0xac/0x360 fs/ext4/file.c:263 ext4_file_write_iter+0x87c/0x1990 do_iter_readv_writev+0x594/0x7a0 do_iter_write+0x1ea/0x760 fs/read_write.c:855 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 free_slab mm/slub.c:2015 [inline] discard_slab mm/slub.c:2021 [inline] __unfreeze_partials+0x1b7/0x210 mm/slub.c:2507 put_cpu_partial+0x132/0x1a0 mm/slub.c:2587 do_slab_free mm/slub.c:3487 [inline] ___cache_free+0xe3/0x100 mm/slub.c:3506 qlist_free_all+0x36/0x90 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x162/0x180 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 getname_flags+0xb8/0x4e0 fs/namei.c:138 user_path_at_empty+0x2a/0x180 fs/namei.c:2882 do_readlinkat+0x114/0x3a0 fs/stat.c:442 __do_sys_readlink fs/stat.c:475 [inline] __se_sys_readlink fs/stat.c:472 [inline] __x64_sys_readlink+0x7b/0x90 fs/stat.c:472 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff8880ab906e00: fc fc fc fa fb fb fb fb fb fb fc fc fc fc fa fb ffff8880ab906e80: fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb fb >ffff8880ab906f00: fc fc fc fc fa fb fb fb fb fb fb fc fc fc fc fa ^ ffff8880ab906f80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ffff8880ab907000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================