loop4: detected capacity change from 0 to 8226 ================================================================== BUG: KASAN: slab-out-of-bounds in run_unpack+0x84f/0xd00 fs/ntfs3/run.c:944 Read of size 1 at addr ffff888079e1f488 by task syz-executor.4/29412 CPU: 0 PID: 29412 Comm: syz-executor.4 Not tainted 6.1.0-rc5-syzkaller-00241-gab290eaddc4c #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_loadlog_and_replay+0x1ac/0x5c0 fs/ntfs3/fsntfs.c:272 ntfs_fill_super+0x2333/0x42a0 fs/ntfs3/super.c:1018 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: 0033:0x7f611fc8cb6a 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:00007f61209cdf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000bc0 RCX: 00007f611fc8cb6a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f61209cdfe0 RBP: 00007f61209ce020 R08: 00007f61209ce020 R09: 0000000020000000 R10: 0000000000000002 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f61209cdfe0 R15: 0000000020003580 Allocated by task 3769: 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_alloc_large_skb net/netlink/af_netlink.c:1191 [inline] netlink_sendmsg+0x774/0xcd0 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x5be/0x9b0 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x23e/0x340 net/socket.c:2565 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 Last potentially related work creation: kasan_save_stack+0x2b/0x50 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481 kvfree_call_rcu+0x112/0x880 kernel/rcu/tree.c:3343 neigh_del net/core/neighbour.c:225 [inline] neigh_remove_one+0x5cc/0x680 net/core/neighbour.c:246 neigh_forced_gc net/core/neighbour.c:276 [inline] neigh_alloc net/core/neighbour.c:447 [inline] ___neigh_create+0x3aa/0x21a0 net/core/neighbour.c:642 ip6_finish_output2+0x1417/0x1440 net/ipv6/ip6_output.c:125 __ip6_finish_output net/ipv6/ip6_output.c:195 [inline] ip6_finish_output+0xa05/0xeb0 net/ipv6/ip6_output.c:206 dst_output include/net/dst.h:445 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xaba/0xfc0 net/ipv6/ndisc.c:508 addrconf_dad_completed+0x6ba/0xc70 net/ipv6/addrconf.c:4248 addrconf_dad_work+0xd61/0x16a0 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 The buggy address belongs to the object at ffff888079e1f000 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 136 bytes to the right of 1024-byte region [ffff888079e1f000, ffff888079e1f400) The buggy address belongs to the physical page: page:ffffea0001e78600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888079e1f800 pfn:0x79e18 head:ffffea0001e78600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001dc9a00 dead000000000002 ffff888012841dc0 raw: ffff888079e1f800 000000008010000f 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 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3627, tgid 3625 (syz-fuzzer), ts 159662804136, free_ts 159623054550 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 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc_node_track_caller+0x9c/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] __tcp_send_ack+0x98/0x5f0 net/ipv4/tcp_output.c:3960 tcp_cleanup_rbuf net/ipv4/tcp.c:1628 [inline] tcp_recvmsg_locked+0x1cf3/0x25c0 net/ipv4/tcp.c:2649 tcp_recvmsg+0x337/0x870 net/ipv4/tcp.c:2679 inet_recvmsg+0x13a/0x250 net/ipv4/af_inet.c:861 sock_recvmsg_nosec net/socket.c:995 [inline] sock_recvmsg net/socket.c:1013 [inline] sock_read_iter+0x3fa/0x530 net/socket.c:1086 call_read_iter include/linux/fs.h:2185 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7ac/0xbf0 fs/read_write.c:470 ksys_read+0x177/0x2a0 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 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 __skb_frag_unref include/linux/skbuff.h:3385 [inline] skb_release_data+0x37a/0x6d0 net/core/skbuff.c:783 skb_release_all net/core/skbuff.c:854 [inline] napi_consume_skb+0x11c/0x1c0 net/core/skbuff.c:1111 skb_defer_free_flush net/core/dev.c:6646 [inline] net_rx_action+0x4ee/0x10d0 net/core/dev.c:6667 __do_softirq+0x277/0x738 kernel/softirq.c:571 Memory state around the buggy address: ffff888079e1f380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888079e1f400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888079e1f480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888079e1f500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888079e1f580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================