UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2105 Write of size 4 at addr ffff88805953c7f0 by task syz.1.695/6854 CPU: 0 PID: 6854 Comm: syz.1.695 Not tainted 6.1.106-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 udf_write_aext+0x5e9/0x7a0 fs/udf/inode.c:2105 udf_add_entry+0x17b7/0x3350 fs/udf/namei.c:482 udf_mkdir+0x1a8/0xaa0 fs/udf/namei.c:681 vfs_mkdir+0x3b6/0x590 fs/namei.c:4108 do_mkdirat+0x225/0x360 fs/namei.c:4133 __do_sys_mkdirat fs/namei.c:4148 [inline] __se_sys_mkdirat fs/namei.c:4146 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4146 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7eff5bd79e79 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007eff5cc2d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007eff5bf15f80 RCX: 00007eff5bd79e79 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00007eff5bde793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007eff5bf15f80 R15: 00007fffdcf522b8 Allocated by task 6504: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:556 [inline] kzalloc include/linux/slab.h:692 [inline] device_private_init drivers/base/core.c:3536 [inline] device_add+0xb5/0xfd0 drivers/base/core.c:3586 rfkill_register+0x182/0x880 net/rfkill/core.c:1070 wiphy_register+0x246e/0x2cc0 net/wireless/core.c:1024 ieee80211_register_hw+0x31bd/0x3f10 net/mac80211/main.c:1385 mac80211_hwsim_new_radio+0x22d9/0x4060 drivers/net/wireless/mac80211_hwsim.c:4582 hwsim_new_radio_nl+0xc54/0x1190 drivers/net/wireless/mac80211_hwsim.c:5176 genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline] genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0xc1a/0xf70 net/netlink/genetlink.c:850 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] __sys_sendto+0x480/0x600 net/socket.c:2148 __do_sys_sendto net/socket.c:2160 [inline] __se_sys_sendto net/socket.c:2156 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2156 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 The buggy address belongs to the object at ffff88805953c400 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 496 bytes to the right of 512-byte region [ffff88805953c400, ffff88805953c600) The buggy address belongs to the physical page: page:ffffea0001654f00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5953c head:ffffea0001654f00 order:2 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001897900 dead000000000003 ffff888012841c80 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3638, tgid 3638 (syz-executor), ts 53316249302, free_ts 11122735347 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2517 prep_new_page mm/page_alloc.c:2524 [inline] get_page_from_freelist+0x322e/0x33b0 mm/page_alloc.c:4290 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5558 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] __kmem_cache_alloc_node+0x19f/0x260 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 [inline] __kmalloc_node_track_caller+0xa0/0x220 mm/slab_common.c:975 kmalloc_reserve net/core/skbuff.c:446 [inline] pskb_expand_head+0x18c/0x10e0 net/core/skbuff.c:1848 netlink_trim+0x183/0x220 net/netlink/af_netlink.c:1308 netlink_broadcast+0x5b/0x10b0 net/netlink/af_netlink.c:1502 nlmsg_multicast include/net/netlink.h:1071 [inline] nlmsg_notify+0xfb/0x1c0 net/netlink/af_netlink.c:2551 rtmsg_fib+0x39f/0x620 net/ipv4/fib_semantics.c:542 fib_table_insert+0xfb6/0x1f20 net/ipv4/fib_trie.c:1404 fib_magic net/ipv4/fib_frontend.c:1104 [inline] fib_add_ifaddr+0xf4c/0x1730 net/ipv4/fib_frontend.c:1148 fib_netdev_event+0x620/0x730 net/ipv4/fib_frontend.c:1486 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1444 [inline] free_pcp_prepare mm/page_alloc.c:1494 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3369 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464 free_contig_range+0x9a/0x150 mm/page_alloc.c:9518 destroy_args+0xfe/0x997 mm/debug_vm_pgtable.c:1031 debug_vm_pgtable+0x416/0x46b mm/debug_vm_pgtable.c:1354 do_one_initcall+0x265/0x8f0 init/main.c:1298 do_initcall_level+0x157/0x207 init/main.c:1371 do_initcalls+0x49/0x86 init/main.c:1387 kernel_init_freeable+0x45c/0x60f init/main.c:1626 kernel_init+0x19/0x290 init/main.c:1514 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff88805953c680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805953c700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88805953c780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88805953c800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88805953c880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================