el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ================================================================== 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+0x148/0x14c fs/jbd2/transaction.c:1241 Read of size 4 at addr ffff00011922a54c by task syz-executor.3/13348 CPU: 1 PID: 13348 Comm: syz-executor.3 Not tainted 5.15.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load4_noabort+0x44/0x50 mm/kasan/report_generic.c:308 is_handle_aborted include/linux/jbd2.h:1694 [inline] jbd2_journal_get_write_access+0x148/0x14c fs/jbd2/transaction.c:1241 __ext4_journal_get_write_access+0x220/0x634 fs/ext4/ext4_jbd2.c:235 ext4_reserve_inode_write+0x2a8/0x328 fs/ext4/inode.c:5782 __ext4_mark_inode_dirty+0x260/0x924 fs/ext4/inode.c:5956 ext4_symlink+0x994/0xc18 fs/ext4/namei.c:3463 vfs_symlink+0x24c/0x3c8 fs/namei.c:4435 do_symlinkat+0x364/0x6b0 fs/namei.c:4464 __do_sys_symlinkat fs/namei.c:4481 [inline] __se_sys_symlinkat fs/namei.c:4478 [inline] __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4478 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 13348: 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+0x8c/0xcc mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x74/0x3f4 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x1dc/0x45c 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+0x158/0x7b4 fs/jbd2/transaction.c:504 __ext4_journal_start_sb+0x358/0x70c fs/ext4/ext4_jbd2.c:105 __ext4_new_inode+0xf64/0x39a8 fs/ext4/ialloc.c:1080 ext4_symlink+0x408/0xc18 fs/ext4/namei.c:3382 vfs_symlink+0x24c/0x3c8 fs/namei.c:4435 do_symlinkat+0x364/0x6b0 fs/namei.c:4464 __do_sys_symlinkat fs/namei.c:4481 [inline] __se_sys_symlinkat fs/namei.c:4478 [inline] __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4478 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Freed by task 13348: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4c/0x84 mm/kasan/common.c:46 kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360 ____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0xdc/0x3c4 mm/slub.c:3515 jbd2_free_handle include/linux/jbd2.h:1602 [inline] jbd2_journal_stop+0x780/0xc78 fs/jbd2/transaction.c:1964 __ext4_journal_stop+0xe4/0x190 fs/ext4/ext4_jbd2.c:127 ext4_symlink+0x4fc/0xc18 fs/ext4/namei.c:3461 vfs_symlink+0x24c/0x3c8 fs/namei.c:4435 do_symlinkat+0x364/0x6b0 fs/namei.c:4464 __do_sys_symlinkat fs/namei.c:4481 [inline] __se_sys_symlinkat fs/namei.c:4478 [inline] __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4478 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff00011922a528 which belongs to the cache jbd2_journal_handle of size 56 The buggy address is located 36 bytes inside of 56-byte region [ffff00011922a528, ffff00011922a560) The buggy address belongs to the page: page:0000000076102b83 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x15922a flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 fffffc000370b600 0000001600000016 ffff0000c0b3e300 raw: 0000000000000000 00000000802e002e 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00011922a400: fc fc fc fc fa fb fb fb fb fb fb fc fc fc fc fa ffff00011922a480: fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb fb >ffff00011922a500: fb fc fc fc fc fa fb fb fb fb fb fb fc fc fc fc ^ ffff00011922a580: fa fb fb fb fb fb fb fc fc fc fc fa fb fb fb fb ffff00011922a600: fb fb fc fc fc fc fa fb fb fb fb fb fb fc fc fc ================================================================== ------------[ cut here ]------------ kernel BUG at fs/jbd2/transaction.c:1102! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 13348 Comm: syz-executor.3 Tainted: G B 5.15.148-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : do_get_write_access+0xe54/0xed8 fs/jbd2/transaction.c:1102 lr : do_get_write_access+0xe54/0xed8 fs/jbd2/transaction.c:1102 sp : ffff8000202b7630 x29: ffff8000202b76b0 x28: ffff0000c0665518 x27: dfff800000000000 x26: 1fffe0001b81f922 x25: ffff0000c06654b0 x24: ffff0000c0665520 x23: ffff0000dc0fc910 x22: 1fffe000180ccaa4 x21: ffff0000c23391a0 x20: 1fffe000180ccaa1 x19: ffff0000dc1ede00 x18: 1fffe0003690278e x17: 1fffe0003690278e x16: ffff8000083024ac x15: ffff8000149bed40 x14: ffff0001b4813c80 x13: ffff0001b4813c7c x12: 0000000000040000 x11: 000000000003ffff x10: ffff80001ffca000 x9 : 0000000000040000 x8 : ffff800008ec6b00 x7 : 0000000000000000 x6 : ffff800008ec5e80 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008ec6148 x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000000 Call trace: do_get_write_access+0xe54/0xed8 fs/jbd2/transaction.c:1102 jbd2_journal_get_write_access+0x11c/0x14c fs/jbd2/transaction.c:1251 __ext4_journal_get_write_access+0x220/0x634 fs/ext4/ext4_jbd2.c:235 ext4_reserve_inode_write+0x2a8/0x328 fs/ext4/inode.c:5782 __ext4_mark_inode_dirty+0x260/0x924 fs/ext4/inode.c:5956 ext4_symlink+0x994/0xc18 fs/ext4/namei.c:3463 vfs_symlink+0x24c/0x3c8 fs/namei.c:4435 do_symlinkat+0x364/0x6b0 fs/namei.c:4464 __do_sys_symlinkat fs/namei.c:4481 [inline] __se_sys_symlinkat fs/namei.c:4478 [inline] __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4478 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: 17ffffb5 97d7ebc0 d4210000 97d7ebbe (d4210000) ---[ end trace 82922b2b2f32b2db ]---