loop4: detected capacity change from 0 to 32768 ================================================================== BUG: KASAN: slab-out-of-bounds in reiserfs_xattr_get+0xe3/0x580 fs/reiserfs/xattr.c:674 Read of size 8 at addr ffff88807dbc1798 by task syz-executor.4/4712 CPU: 0 PID: 4712 Comm: syz-executor.4 Not tainted 6.1.0-rc8-syzkaller-00148-g0d1409e4ff08 #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 reiserfs_xattr_get+0xe3/0x580 fs/reiserfs/xattr.c:674 reiserfs_get_acl+0x7a/0x650 fs/reiserfs/xattr_acl.c:214 get_acl+0x157/0x260 fs/posix_acl.c:153 check_acl+0x35/0x150 fs/namei.c:306 acl_permission_check fs/namei.c:351 [inline] generic_permission+0x388/0x4e0 fs/namei.c:404 do_inode_permission fs/namei.c:458 [inline] inode_permission+0x22c/0x450 fs/namei.c:525 may_open+0x2a4/0x400 fs/namei.c:3185 do_open fs/namei.c:3555 [inline] path_openat+0x24a2/0x2df0 fs/namei.c:3714 do_filp_open+0x264/0x4f0 fs/namei.c:3741 do_sys_openat2+0x124/0x4e0 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+0x243/0x290 fs/open.c:1337 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: 0033:0x7f95e9a3e264 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007f95ea717f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000005dcc RCX: 00007f95e9a3e264 RDX: 0000000000010000 RSI: 0000000020000080 RDI: 00000000ffffff9c RBP: 0000000020000080 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000010000 R13: 0000000020000080 R14: 00007f95ea717fe0 R15: 0000000020000140 Allocated by task 4711: 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+0xaf/0x1a0 mm/slab_common.c:968 kmalloc_array include/linux/slab.h:605 [inline] kcalloc include/linux/slab.h:636 [inline] iter_file_splice_write+0x245/0xfc0 fs/splice.c:625 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0xe6/0x1c0 fs/splice.c:931 splice_direct_to_actor+0x4e4/0xc00 fs/splice.c:886 do_splice_direct+0x279/0x3d0 fs/splice.c:974 do_sendfile+0x5fb/0xf80 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1309 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 Freed by task 4711: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x3d/0x60 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:511 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] __kmem_cache_free+0x71/0x110 mm/slub.c:3674 iter_file_splice_write+0xd5e/0xfc0 fs/splice.c:714 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0xe6/0x1c0 fs/splice.c:931 splice_direct_to_actor+0x4e4/0xc00 fs/splice.c:886 do_splice_direct+0x279/0x3d0 fs/splice.c:974 do_sendfile+0x5fb/0xf80 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64+0x14f/0x1b0 fs/read_write.c:1309 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 call_rcu+0x163/0x9c0 kernel/rcu/tree.c:2798 free_fib_info net/ipv4/fib_semantics.c:256 [inline] fib_info_put include/net/ip_fib.h:578 [inline] fib_release_info+0x654/0x720 net/ipv4/fib_semantics.c:281 fib_table_flush+0xca2/0x1310 net/ipv4/fib_trie.c:2092 fib_flush net/ipv4/fib_frontend.c:195 [inline] fib_disable_ip net/ipv4/fib_frontend.c:1423 [inline] fib_netdev_event+0x3bf/0x740 net/ipv4/fib_frontend.c:1492 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1945 [inline] call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] dev_close_many+0x3fb/0x5d0 net/core/dev.c:1545 unregister_netdevice_many+0x532/0x1aa0 net/core/dev.c:10821 default_device_exit_batch+0x570/0x5e0 net/core/dev.c:11341 ops_exit_list net/core/net_namespace.c:174 [inline] cleanup_net+0x80c/0xc50 net/core/net_namespace.c:601 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 Second to 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 call_rcu+0x163/0x9c0 kernel/rcu/tree.c:2798 free_fib_info net/ipv4/fib_semantics.c:256 [inline] fib_info_put include/net/ip_fib.h:578 [inline] fib_release_info+0x654/0x720 net/ipv4/fib_semantics.c:281 fib_table_delete+0xf92/0x1230 net/ipv4/fib_trie.c:1777 fib_magic+0x471/0x650 net/ipv4/fib_frontend.c:1103 fib_del_ifaddr+0x104a/0x1440 net/ipv4/fib_frontend.c:1314 fib_inetaddr_event+0xb4/0x2e0 net/ipv4/fib_frontend.c:1445 notifier_call_chain kernel/notifier.c:87 [inline] blocking_notifier_call_chain+0x108/0x1b0 kernel/notifier.c:382 __inet_del_ifa+0xb11/0x1060 net/ipv4/devinet.c:431 inet_del_ifa net/ipv4/devinet.c:468 [inline] inetdev_destroy net/ipv4/devinet.c:321 [inline] inetdev_event+0x612/0x14a0 net/ipv4/devinet.c:1602 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1945 [inline] call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] unregister_netdevice_many+0x101e/0x1aa0 net/core/dev.c:10847 default_device_exit_batch+0x570/0x5e0 net/core/dev.c:11341 ops_exit_list net/core/net_namespace.c:174 [inline] cleanup_net+0x80c/0xc50 net/core/net_namespace.c:601 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 ffff88807dbc1600 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 152 bytes to the right of 256-byte region [ffff88807dbc1600, ffff88807dbc1700) The buggy address belongs to the physical page: page:ffffea0001f6f000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7dbc0 head:ffffea0001f6f000 order:1 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001dfb480 dead000000000005 ffff888012841b40 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3670, tgid 3670 (syz-executor.4), ts 171344250077, free_ts 163848907608 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4291 __alloc_pages+0x259/0x560 mm/page_alloc.c:5558 alloc_slab_page+0xbd/0x190 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+0x9e/0x1a0 mm/slab_common.c:968 kmalloc include/linux/slab.h:558 [inline] kzalloc include/linux/slab.h:689 [inline] fib_create_info+0xa5a/0x2410 net/ipv4/fib_semantics.c:1452 fib_table_insert+0x1e5/0x1f50 net/ipv4/fib_trie.c:1236 fib_magic+0x451/0x650 net/ipv4/fib_frontend.c:1101 fib_add_ifaddr+0x143/0x5c0 net/ipv4/fib_frontend.c:1123 fib_netdev_event+0x628/0x740 net/ipv4/fib_frontend.c:1483 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:455 __dev_notify_flags+0x2ef/0x5d0 dev_change_flags+0xe3/0x190 net/core/dev.c:8619 do_setlink+0xef5/0x3d40 net/core/rtnetlink.c:2788 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 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+0x1ca/0x340 mm/slub.c:3443 __alloc_skb+0xcf/0x2b0 net/core/skbuff.c:497 alloc_skb_fclone include/linux/skbuff.h:1317 [inline] tcp_stream_alloc_skb+0x3c/0x300 net/ipv4/tcp.c:862 tcp_sendmsg_locked+0xd70/0x40d0 net/ipv4/tcp.c:1325 tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1483 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] sock_write_iter+0x3d4/0x540 net/socket.c:1108 call_write_iter include/linux/fs.h:2199 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7dc/0xc50 fs/read_write.c:584 ksys_write+0x177/0x2a0 fs/read_write.c:637 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 Memory state around the buggy address: ffff88807dbc1680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88807dbc1700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88807dbc1780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88807dbc1800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88807dbc1880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================