loop4: detected capacity change from 0 to 4096 ntfs3: loop4: Different NTFS' sector size (4096) and media sector size (512) ================================================================== BUG: KASAN: slab-out-of-bounds in ntfs_trim_fs+0x84f/0x950 fs/ntfs3/bitmap.c:1434 Read of size 2 at addr ffff8880af88f282 by task syz-executor.4/14074 CPU: 1 PID: 14074 Comm: syz-executor.4 Not tainted 6.1.0-syzkaller-00071-g3a28c2c89f4b #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:284 [inline] print_report+0x15e/0x461 mm/kasan/report.c:395 kasan_report+0xbf/0x1f0 mm/kasan/report.c:495 ntfs_trim_fs+0x84f/0x950 fs/ntfs3/bitmap.c:1434 ntfs_ioctl_fitrim+0x23e/0x340 fs/ntfs3/file.c:40 ntfs_ioctl+0xa0/0xe0 fs/ntfs3/file.c:57 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 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: 0033:0x7fe8ae08c0d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe8aeecc168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe8ae1abf80 RCX: 00007fe8ae08c0d9 RDX: 00000000200000c0 RSI: 00000000c0185879 RDI: 0000000000000004 RBP: 00007fe8ae0e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb744eebf R14: 00007fe8aeecc300 R15: 0000000000022000 Allocated by task 14074: 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+0xa3/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:955 [inline] __kmalloc+0x5a/0xd0 mm/slab_common.c:968 kmalloc_array include/linux/slab.h:616 [inline] kcalloc include/linux/slab.h:647 [inline] wnd_init+0x2ff/0x460 fs/ntfs3/bitmap.c:664 ntfs_fill_super+0x2696/0x37f0 fs/ntfs3/super.c:1118 get_tree_bdev+0x444/0x760 fs/super.c:1324 vfs_get_tree+0x8d/0x2f0 fs/super.c:1531 do_new_mount fs/namespace.c:3040 [inline] path_mount+0x132a/0x1e20 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3568 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 ffff8880af88f280 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 2 bytes inside of 32-byte region [ffff8880af88f280, ffff8880af88f2a0) The buggy address belongs to the physical page: page:ffffea0002be23c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff8880af88ffc1 pfn:0xaf88f flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0002c3adc8 ffffea00022e4508 ffff888012040100 raw: ffff8880af88ffc1 ffff8880af88f000 000000010000003f 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x3420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 3681, tgid 3681 (syz-executor.2), ts 2386178513280, free_ts 2386178260120 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x10b5/0x2d50 mm/page_alloc.c:4291 __alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5558 __alloc_pages_node include/linux/gfp.h:237 [inline] kmem_getpages mm/slab.c:1363 [inline] cache_grow_begin+0x94/0x390 mm/slab.c:2570 cache_alloc_refill+0x27f/0x380 mm/slab.c:2943 ____cache_alloc mm/slab.c:3019 [inline] ____cache_alloc mm/slab.c:3002 [inline] __do_cache_alloc mm/slab.c:3202 [inline] slab_alloc_node mm/slab.c:3250 [inline] __kmem_cache_alloc_node+0x44a/0x510 mm/slab.c:3549 kmalloc_trace+0x26/0x60 mm/slab_common.c:1045 kmalloc include/linux/slab.h:564 [inline] kzalloc include/linux/slab.h:700 [inline] selinux_sk_alloc_security+0x88/0x210 security/selinux/hooks.c:5190 security_sk_alloc+0x54/0xb0 security/security.c:2286 sk_prot_alloc+0xdd/0x290 net/core/sock.c:2033 sk_alloc+0x3a/0x780 net/core/sock.c:2083 inet6_create net/ipv6/af_inet6.c:191 [inline] inet6_create+0x373/0x1030 net/ipv6/af_inet6.c:118 __sock_create+0x359/0x790 net/socket.c:1515 sock_create net/socket.c:1566 [inline] __sys_socket_create net/socket.c:1603 [inline] __sys_socket_create net/socket.c:1588 [inline] __sys_socket+0x133/0x250 net/socket.c:1636 __do_sys_socket net/socket.c:1649 [inline] __se_sys_socket net/socket.c:1647 [inline] __x64_sys_socket+0x73/0xb0 net/socket.c:1647 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:1459 [inline] free_pcp_prepare+0x65c/0xd90 mm/page_alloc.c:1509 free_unref_page_prepare mm/page_alloc.c:3387 [inline] free_unref_page+0x1d/0x4d0 mm/page_alloc.c:3483 __vunmap+0x85d/0xd30 mm/vmalloc.c:2713 __vfree+0x3c/0xd0 mm/vmalloc.c:2761 vfree+0x5e/0x90 mm/vmalloc.c:2792 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:868 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1024 [inline] do_ipt_get_ctl+0x802/0x9e0 net/ipv4/netfilter/ip_tables.c:1663 nf_getsockopt+0x76/0xd0 net/netfilter/nf_sockopt.c:116 ip_getsockopt+0x189/0x1e0 net/ipv4/ip_sockglue.c:1796 tcp_getsockopt+0x99/0x100 net/ipv4/tcp.c:4401 __sys_getsockopt+0x21a/0x6a0 net/socket.c:2296 __do_sys_getsockopt net/socket.c:2311 [inline] __se_sys_getsockopt net/socket.c:2308 [inline] __x64_sys_getsockopt+0xbe/0x160 net/socket.c:2308 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 Memory state around the buggy address: ffff8880af88f180: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc ffff8880af88f200: 00 00 00 00 fc fc fc fc fa fb fb fb fc fc fc fc >ffff8880af88f280: 02 fc fc fc fc fc fc fc fa fb fb fb fc fc fc fc ^ ffff8880af88f300: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc ffff8880af88f380: 00 fc fc fc fc fc fc fc fa fb fb fb fc fc fc fc ==================================================================