UDF-fs: error (device loop0): udf_read_tagged: read failed, block=256, location=256 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x7e9/0x8f0 fs/udf/inode.c:2090 Write of size 4 at addr ffff888021abbff0 by task syz-executor218/5063 CPU: 0 PID: 5063 Comm: syz-executor218 Not tainted 6.1.0-syzkaller-14446-g8395ae05cb5a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:306 [inline] print_report+0x15e/0x45d mm/kasan/report.c:417 kasan_report+0xbf/0x1f0 mm/kasan/report.c:517 udf_write_aext+0x7e9/0x8f0 fs/udf/inode.c:2090 udf_add_entry+0xd03/0x2ac0 fs/udf/namei.c:482 udf_mkdir+0x149/0x650 fs/udf/namei.c:681 vfs_mkdir+0x48d/0x740 fs/namei.c:4036 do_mkdirat+0x27b/0x2f0 fs/namei.c:4061 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __x64_sys_mkdirat+0x119/0x170 fs/namei.c:4074 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f01a531bf79 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffd2a85868 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f01a538aed0 RCX: 00007f01a531bf79 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000004 RBP: 00007fffd2a85878 R08: 00007f01a538ae40 R09: 00007f01a538ae40 R10: 000000000000056b R11: 0000000000000246 R12: 00007fffd2a85880 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 5063: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] ____kasan_kmalloc mm/kasan/common.c:330 [inline] __kasan_kmalloc+0xa5/0xb0 mm/kasan/common.c:380 kmalloc include/linux/slab.h:580 [inline] tomoyo_print_header security/tomoyo/audit.c:156 [inline] tomoyo_init_log+0x18e/0x1ec0 security/tomoyo/audit.c:255 tomoyo_supervisor+0x354/0xf10 security/tomoyo/common.c:2088 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x410/0x570 security/tomoyo/file.c:734 tomoyo_path_mkdir+0x9c/0xe0 security/tomoyo/tomoyo.c:178 security_path_mkdir+0xec/0x160 security/security.c:1188 do_mkdirat+0x14d/0x2f0 fs/namei.c:4056 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __x64_sys_mkdirat+0x119/0x170 fs/namei.c:4074 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 5063: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:518 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807 slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0xaf/0x3b0 mm/slub.c:3800 tomoyo_init_log+0x1403/0x1ec0 security/tomoyo/audit.c:294 tomoyo_supervisor+0x354/0xf10 security/tomoyo/common.c:2088 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x410/0x570 security/tomoyo/file.c:734 tomoyo_path_mkdir+0x9c/0xe0 security/tomoyo/tomoyo.c:178 security_path_mkdir+0xec/0x160 security/security.c:1188 do_mkdirat+0x14d/0x2f0 fs/namei.c:4056 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __x64_sys_mkdirat+0x119/0x170 fs/namei.c:4074 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888021aba000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 4080 bytes to the right of 4096-byte region [ffff888021aba000, ffff888021abb000) The buggy address belongs to the physical page: page:ffffea000086ae00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21ab8 head:ffffea000086ae00 order:3 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888012442140 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5063, tgid 5063 (syz-executor218), ts 52896424702, free_ts 52890537450 prep_new_page mm/page_alloc.c:2531 [inline] get_page_from_freelist+0x119c/0x2ce0 mm/page_alloc.c:4283 __alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5549 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1851 [inline] allocate_slab+0x25f/0x350 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3193 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292 __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x1a4/0x430 mm/slub.c:3491 __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0x4a/0xd0 mm/slab_common.c:981 kmalloc include/linux/slab.h:584 [inline] tomoyo_realpath_from_path+0xc3/0x600 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x217/0x570 security/tomoyo/file.c:723 tomoyo_path_mkdir+0x9c/0xe0 security/tomoyo/tomoyo.c:178 security_path_mkdir+0xec/0x160 security/security.c:1188 do_mkdirat+0x14d/0x2f0 fs/namei.c:4056 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __x64_sys_mkdirat+0x119/0x170 fs/namei.c:4074 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1446 [inline] free_pcp_prepare+0x65c/0xc00 mm/page_alloc.c:1496 free_unref_page_prepare mm/page_alloc.c:3369 [inline] free_unref_page+0x1d/0x490 mm/page_alloc.c:3464 __folio_put_large mm/swap.c:119 [inline] __folio_put+0x109/0x140 mm/swap.c:127 folio_put include/linux/mm.h:1250 [inline] put_page+0x21b/0x280 include/linux/mm.h:1319 page_to_skb+0x96d/0xc60 drivers/net/virtio_net.c:558 receive_mergeable drivers/net/virtio_net.c:1126 [inline] receive_buf+0x11c5/0x5630 drivers/net/virtio_net.c:1265 virtnet_receive drivers/net/virtio_net.c:1560 [inline] virtnet_poll+0x704/0x1300 drivers/net/virtio_net.c:1678 __napi_poll+0xb8/0x770 net/core/dev.c:6485 napi_poll net/core/dev.c:6552 [inline] net_rx_action+0xa00/0xde0 net/core/dev.c:6663 __do_softirq+0x1fb/0xadc kernel/softirq.c:571 Memory state around the buggy address: ffff888021abbe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888021abbf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888021abbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888021abc000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888021abc080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================