loop4: detected capacity change from 0 to 8226 ntfs3: loop4: Mark volume as dirty due to NTFS errors ntfs3: loop4: Failed to load $Extend. ================================================================== BUG: KASAN: slab-out-of-bounds in hdr_find_e.isra.0+0x527/0x590 fs/ntfs3/index.c:689 Read of size 2 at addr ffff88807840d820 by task syz-executor.4/22520 CPU: 1 PID: 22520 Comm: syz-executor.4 Not tainted 6.0.0-syzkaller-07994-ge8bc52cb8df8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 hdr_find_e.isra.0+0x527/0x590 fs/ntfs3/index.c:689 indx_find+0x4ff/0x980 fs/ntfs3/index.c:1085 dir_search_u+0x232/0x3f0 fs/ntfs3/dir.c:254 ntfs_lookup+0x174/0x1e0 fs/ntfs3/namei.c:83 lookup_open.isra.0+0x76a/0x12a0 fs/namei.c:3391 open_last_lookups fs/namei.c:3481 [inline] path_openat+0x996/0x28f0 fs/namei.c:3688 do_filp_open+0x1b6/0x400 fs/namei.c:3718 do_sys_openat2+0x16d/0x4c0 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] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd48b68a5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007fd48a5fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fd48b7abf80 RCX: 00007fd48b68a5a9 RDX: 000000000000275a RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00007fd48b6e5580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0c8a2bff R14: 00007fd48a5fe300 R15: 0000000000022000 Allocated by task 3634: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc mm/kasan/common.c:516 [inline] ____kasan_kmalloc mm/kasan/common.c:475 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:525 kmemdup+0x23/0x50 mm/util.c:129 kmemdup include/linux/fortify-string.h:565 [inline] neigh_sysctl_register+0x9a/0x5e0 net/core/neighbour.c:3790 devinet_sysctl_register+0xb1/0x230 net/ipv4/devinet.c:2623 inetdev_init+0x286/0x580 net/ipv4/devinet.c:279 inetdev_event+0xa85/0x1610 net/ipv4/devinet.c:1534 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945 call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] register_netdevice+0x10bb/0x1670 net/core/dev.c:10086 register_vlan_dev+0x360/0x8b0 net/8021q/vlan.c:179 vlan_newlink+0x447/0x6d0 net/8021q/vlan_netlink.c:191 rtnl_newlink_create net/core/rtnetlink.c:3364 [inline] __rtnl_newlink+0x1087/0x17e0 net/core/rtnetlink.c:3581 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3594 rtnetlink_rcv_msg+0x43a/0xca0 net/core/rtnetlink.c:6091 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2540 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 __sys_sendto+0x236/0x340 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88807840d000 which belongs to the cache kmalloc-cg-2k of size 2048 The buggy address is located 32 bytes to the right of 2048-byte region [ffff88807840d000, ffff88807840d800) The buggy address belongs to the physical page: page:ffffea0001e10200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78408 head:ffffea0001e10200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000122 ffff88801184c140 raw: 0000000000000000 0000000000080008 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3638, tgid 3638 (syz-executor.3), ts 182144106957, free_ts 182134601167 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5549 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:1829 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x84f/0xe80 mm/slub.c:3036 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123 slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] __kmalloc_track_caller+0x325/0x340 mm/slub.c:4931 kmemdup+0x23/0x50 mm/util.c:129 kmemdup include/linux/fortify-string.h:565 [inline] neigh_sysctl_register+0x9a/0x5e0 net/core/neighbour.c:3790 devinet_sysctl_register+0xb1/0x230 net/ipv4/devinet.c:2623 inetdev_init+0x286/0x580 net/ipv4/devinet.c:279 inetdev_event+0xa85/0x1610 net/ipv4/devinet.c:1534 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945 call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] register_netdevice+0x10bb/0x1670 net/core/dev.c:10086 macsec_newlink+0x4cc/0x1d00 drivers/net/macsec.c:4085 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x19/0x4d0 mm/page_alloc.c:3476 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2553 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:447 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] slab_alloc mm/slub.c:3256 [inline] kmem_cache_alloc_trace+0x2c0/0x3e0 mm/slub.c:3287 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] devlink_trap_group_register net/core/devlink.c:12094 [inline] devl_trap_groups_register+0x28d/0xab0 net/core/devlink.c:12169 nsim_dev_traps_init+0x268/0x5d0 drivers/net/netdevsim/dev.c:892 nsim_drv_probe+0x71e/0x1310 drivers/net/netdevsim/dev.c:1569 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 Memory state around the buggy address: ffff88807840d700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807840d780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807840d800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807840d880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88807840d900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc 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