================================================================== BUG: KASAN: use-after-free in run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 Read of size 1 at addr ffff8880724504a3 by task syz-executor.4/3914 CPU: 0 PID: 3914 Comm: syz-executor.4 Not tainted 6.1.0-rc5-syzkaller-00326-g77c51ba552a1 #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+0x1b1/0x28e lib/dump_stack.c:106 print_address_description+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x1f0 mm/kasan/report.c:395 kasan_report+0xcd/0x100 mm/kasan/report.c:495 run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 run_unpack_ex+0xcc/0x870 fs/ntfs3/run.c:1057 ntfs_read_mft fs/ntfs3/inode.c:368 [inline] ntfs_iget5+0x1cfa/0x36f0 fs/ntfs3/inode.c:501 ntfs_fill_super+0x2f4c/0x42a0 fs/ntfs3/super.c:1095 get_tree_bdev+0x400/0x620 fs/super.c:1324 vfs_get_tree+0x88/0x270 fs/super.c:1531 do_new_mount+0x289/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568 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+0x63/0xcd RIP: 0033:0x7f682bc8cb6a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f682c981f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000bc0 RCX: 00007f682bc8cb6a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f682c981fe0 RBP: 00007f682c982020 R08: 00007f682c982020 R09: 0000000020000000 R10: 0000000000000002 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f682c981fe0 R15: 0000000020003580 Allocated by task 3673: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc_node_track_caller+0xad/0x190 mm/slab_common.c:975 kmalloc_reserve net/core/skbuff.c:437 [inline] __alloc_skb+0x112/0x2b0 net/core/skbuff.c:509 alloc_skb include/linux/skbuff.h:1267 [inline] netlink_dump+0x1f3/0xc40 net/netlink/af_netlink.c:2242 netlink_recvmsg+0x637/0x10a0 net/netlink/af_netlink.c:2002 sock_recvmsg_nosec net/socket.c:995 [inline] sock_recvmsg net/socket.c:1013 [inline] __sys_recvfrom+0x32e/0x4a0 net/socket.c:2169 __do_sys_recvfrom net/socket.c:2187 [inline] __se_sys_recvfrom net/socket.c:2183 [inline] __x64_sys_recvfrom+0xda/0xf0 net/socket.c:2183 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+0x63/0xcd The buggy address belongs to the object at ffff888072450000 which belongs to the cache kmalloc-8k of size 8192 The buggy address is located 1187 bytes inside of 8192-byte region [ffff888072450000, ffff888072452000) The buggy address belongs to the physical page: page:ffffea0001c91400 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888072450000 pfn:0x72450 head:ffffea0001c91400 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001c91a00 dead000000000003 ffff888012842280 raw: ffff888072450000 0000000080020001 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 3298, tgid 3298 (S50sshd), ts 29569659825, free_ts 29567166512 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4288 __alloc_pages+0x259/0x560 mm/page_alloc.c:5555 alloc_slab_page+0x70/0xf0 mm/slub.c:1794 allocate_slab+0x5e/0x4b0 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0x782/0xe20 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x252/0x310 mm/slub.c:3437 kmalloc_trace+0x26/0x60 mm/slab_common.c:1045 kmalloc include/linux/slab.h:553 [inline] kzalloc include/linux/slab.h:689 [inline] tomoyo_print_bprm security/tomoyo/audit.c:26 [inline] tomoyo_init_log+0xfd2/0x1f80 security/tomoyo/audit.c:264 tomoyo_supervisor+0x38d/0x14f0 security/tomoyo/common.c:2088 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline] tomoyo_env_perm+0x15b/0x1f0 security/tomoyo/environ.c:63 tomoyo_environ security/tomoyo/domain.c:672 [inline] tomoyo_find_next_domain+0x169e/0x1d80 security/tomoyo/domain.c:879 tomoyo_bprm_check_security+0xe3/0x130 security/tomoyo/tomoyo.c:101 security_bprm_check+0x50/0xb0 security/security.c:869 search_binary_handler fs/exec.c:1715 [inline] exec_binprm fs/exec.c:1768 [inline] bprm_execve+0x817/0x1590 fs/exec.c:1837 do_execveat_common+0x598/0x750 fs/exec.c:1942 do_execve fs/exec.c:2016 [inline] __do_sys_execve fs/exec.c:2092 [inline] __se_sys_execve fs/exec.c:2087 [inline] __x64_sys_execve+0x8e/0xa0 fs/exec.c:2087 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509 free_unref_page_prepare mm/page_alloc.c:3387 [inline] free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3483 free_slab mm/slub.c:2031 [inline] discard_slab mm/slub.c:2037 [inline] __unfreeze_partials+0x1ab/0x200 mm/slub.c:2586 put_cpu_partial+0x106/0x170 mm/slub.c:2662 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] __kmem_cache_alloc_node+0x1d7/0x310 mm/slub.c:3437 kmalloc_trace+0x26/0x60 mm/slab_common.c:1045 kmalloc include/linux/slab.h:553 [inline] tomoyo_print_header security/tomoyo/audit.c:156 [inline] tomoyo_init_log+0x16a/0x1f80 security/tomoyo/audit.c:255 tomoyo_supervisor+0x38d/0x14f0 security/tomoyo/common.c:2088 tomoyo_find_next_domain+0x41a/0x1d80 security/tomoyo/domain.c:752 tomoyo_bprm_check_security+0xe3/0x130 security/tomoyo/tomoyo.c:101 security_bprm_check+0x50/0xb0 security/security.c:869 search_binary_handler fs/exec.c:1715 [inline] exec_binprm fs/exec.c:1768 [inline] bprm_execve+0x817/0x1590 fs/exec.c:1837 do_execveat_common+0x598/0x750 fs/exec.c:1942 Memory state around the buggy address: ffff888072450380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888072450400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888072450480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888072450500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888072450580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================