UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2088 Write of size 4 at addr ffff00012a7493f0 by task syz-executor.5/10618 CPU: 1 PID: 10618 Comm: syz-executor.5 Not tainted 6.2.0-syzkaller-18295-ga9b06ec42c0f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:306 [inline] print_report+0x178/0x4e0 mm/kasan/report.c:417 kasan_report+0xd4/0x130 mm/kasan/report.c:517 __asan_report_store_n_noabort+0x28/0x34 mm/kasan/report_generic.c:367 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2088 udf_add_entry+0x11e0/0x28b0 fs/udf/namei.c:482 udf_mkdir+0x158/0x7e0 fs/udf/namei.c:681 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036 do_mkdirat+0x200/0x5f8 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Allocated by task 10208: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:512 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:968 [inline] __kmalloc_node+0xe0/0x1d0 mm/slab_common.c:975 kmalloc_node include/linux/slab.h:610 [inline] kvmalloc_node+0x84/0x1e4 mm/util.c:581 kvmalloc include/linux/slab.h:737 [inline] kvzalloc include/linux/slab.h:745 [inline] v4l2_ctrl_new+0x790/0x1374 drivers/media/v4l2-core/v4l2-ctrls-core.c:1664 v4l2_ctrl_new_custom+0x5ac/0x848 drivers/media/v4l2-core/v4l2-ctrls-core.c:1774 vicodec_open+0x2ec/0xa14 drivers/media/test-drivers/vicodec/vicodec-core.c:1855 v4l2_open+0x1a8/0x2bc drivers/media/v4l2-core/v4l2-dev.c:427 chrdev_open+0x3e8/0x4fc fs/char_dev.c:414 do_dentry_open+0x734/0xfa0 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3557 [inline] path_openat+0x1d88/0x2578 fs/namei.c:3714 do_filp_open+0x1bc/0x3cc fs/namei.c:3741 do_sys_openat2+0x128/0x3d8 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1337 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Freed by task 10199: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:523 ____kasan_slab_free+0x144/0x20c mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0x2c0/0x500 mm/slub.c:3800 kfree+0x104/0x268 mm/slab_common.c:1020 kvfree+0x40/0x50 mm/util.c:627 v4l2_ctrl_handler_free+0x458/0x520 drivers/media/v4l2-core/v4l2-ctrls-core.c:1325 vicodec_release+0xc4/0x104 drivers/media/test-drivers/vicodec/vicodec-core.c:1937 v4l2_release+0x1b0/0x314 drivers/media/v4l2-core/v4l2-dev.c:456 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1302 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 The buggy address belongs to the object at ffff00012a749000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff00012a749000, ffff00012a749200) The buggy address belongs to the physical page: page:00000000daa59697 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff00012a749000 pfn:0x16a748 head:00000000daa59697 order:2 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 ksm flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 ffff0000c0002600 fffffc0004af9f00 dead000000000003 raw: ffff00012a749000 000000008010000b 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff00012a749280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff00012a749300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff00012a749380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff00012a749400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff00012a749480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================