RBP: 00007fd99dc50120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007fd99e9edf80 R15: 00007ffc53fe8a68 ================================================================== BUG: KASAN: use-after-free in is_handle_aborted include/linux/jbd2.h:1689 [inline] BUG: KASAN: use-after-free in jbd2_journal_get_write_access+0x136/0x140 fs/jbd2/transaction.c:1241 Read of size 4 at addr ffff88801cda8acc by task syz-executor.0/4632 CPU: 0 PID: 4632 Comm: syz-executor.0 Not tainted 5.15.186-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 is_handle_aborted include/linux/jbd2.h:1689 [inline] jbd2_journal_get_write_access+0x136/0x140 fs/jbd2/transaction.c:1241 __ext4_journal_get_write_access+0x22e/0x6d0 fs/ext4/ext4_jbd2.c:235 ext4_reserve_inode_write+0x203/0x2e0 fs/ext4/inode.c:5829 __ext4_mark_inode_dirty+0x142/0x700 fs/ext4/inode.c:6003 ext4_symlink+0xaa4/0xcc0 fs/ext4/namei.c:3509 vfs_symlink+0x247/0x3d0 fs/namei.c:4429 do_symlinkat+0x1be/0x6c0 fs/namei.c:4458 __do_sys_symlink fs/namei.c:4480 [inline] __se_sys_symlink fs/namei.c:4478 [inline] __x64_sys_symlink+0x7a/0x90 fs/namei.c:4478 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fd99e8ceba9 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:00007fd99dc500c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007fd99e9edf80 RCX: 00007fd99e8ceba9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000020000140 RBP: 00007fd99dc50120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007fd99e9edf80 R15: 00007ffc53fe8a68 Allocated by task 4632: 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+0x9c/0xd0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x100/0x290 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:725 [inline] jbd2_alloc_handle include/linux/jbd2.h:1597 [inline] new_handle fs/jbd2/transaction.c:477 [inline] jbd2__journal_start+0x13c/0x5a0 fs/jbd2/transaction.c:504 __ext4_journal_start_sb+0x167/0x360 fs/ext4/ext4_jbd2.c:105 __ext4_new_inode+0x119c/0x39e0 fs/ext4/ialloc.c:1084 ext4_symlink+0x471/0xcc0 fs/ext4/namei.c:3428 vfs_symlink+0x247/0x3d0 fs/namei.c:4429 do_symlinkat+0x1be/0x6c0 fs/namei.c:4458 __do_sys_symlink fs/namei.c:4480 [inline] __se_sys_symlink fs/namei.c:4478 [inline] __x64_sys_symlink+0x7a/0x90 fs/namei.c:4478 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 4632: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd5/0x110 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+0xea/0x170 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x8f/0x210 mm/slub.c:3515 jbd2_free_handle include/linux/jbd2.h:1602 [inline] jbd2_journal_stop+0x8c2/0xd20 fs/jbd2/transaction.c:1965 __ext4_journal_stop+0xf2/0x190 fs/ext4/ext4_jbd2.c:127 ext4_symlink+0x581/0xcc0 fs/ext4/namei.c:3507 vfs_symlink+0x247/0x3d0 fs/namei.c:4429 do_symlinkat+0x1be/0x6c0 fs/namei.c:4458 __do_sys_symlink fs/namei.c:4480 [inline] __se_sys_symlink fs/namei.c:4478 [inline] __x64_sys_symlink+0x7a/0x90 fs/namei.c:4478 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff88801cda8aa8 which belongs to the cache jbd2_journal_handle of size 56 The buggy address is located 36 bytes inside of 56-byte region [ffff88801cda8aa8, ffff88801cda8ae0) The buggy address belongs to the page: page:ffffea0000736a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1cda8 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0000828e80 0000000200000002 ffff88801d7ae000 raw: 0000000000000000 00000000802e002e 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 0x12c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_RECLAIMABLE), pid 3529, ts 13300066967, free_ts 0 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5474 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xc0/0x4b0 mm/slub.c:1975 ___slab_alloc+0x81e/0xdf0 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+0x195/0x290 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:725 [inline] jbd2_alloc_handle include/linux/jbd2.h:1597 [inline] new_handle fs/jbd2/transaction.c:477 [inline] jbd2__journal_start+0x13c/0x5a0 fs/jbd2/transaction.c:504 __ext4_journal_start_sb+0x167/0x360 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:6037 __mark_inode_dirty+0x2b0/0xc60 fs/fs-writeback.c:2464 generic_update_time fs/inode.c:1881 [inline] inode_update_time fs/inode.c:1894 [inline] touch_atime+0x3a7/0x620 fs/inode.c:1966 file_accessed include/linux/fs.h:2521 [inline] filemap_read+0x22c2/0x2480 mm/filemap.c:2715 __kernel_read+0x4eb/0x910 fs/read_write.c:443 prepare_binprm fs/exec.c:1672 [inline] search_binary_handler fs/exec.c:1726 [inline] exec_binprm fs/exec.c:1783 [inline] bprm_execve+0x9d7/0x17d0 fs/exec.c:1852 do_execveat_common+0x51e/0x6d0 fs/exec.c:1957 do_execve fs/exec.c:2027 [inline] __do_sys_execve fs/exec.c:2103 [inline] __se_sys_execve fs/exec.c:2098 [inline] __x64_sys_execve+0x8e/0xa0 fs/exec.c:2098 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 page_owner free stack trace missing Memory state around the buggy address: ffff88801cda8980: fc fc fc fc fa fb fb fb fb fb fb fc fc fc fc fa ffff88801cda8a00: fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb >ffff88801cda8a80: fb fc fc fc fc fa fb fb fb fb fb fb fc fc fc fc ^ ffff88801cda8b00: fb fb fb fb fb fb fb fc fc fc fc fb fb fb fb fb ffff88801cda8b80: fb fb fc fc fc fc fb fb fb fb fb fb fb fc fc fc ==================================================================