audit: type=1804 audit(1667533871.601:139): pid=25876 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir664659230/syzkaller.SjBVdp/471/file0/bus" dev="loop0" ino=1345 res=1 UDF-fs: error (device loop0): udf_read_inode: (ino 1335) failed !bh overlayfs: maximum fs stacking depth exceeded ================================================================== BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x847/0x860 fs/udf/inode.c:2059 Write of size 4 at addr ffff888097216cf8 by task syz-executor.0/25876 CPU: 0 PID: 25876 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_store_n_noabort+0x8b/0xa0 mm/kasan/report.c:449 udf_write_aext+0x847/0x860 fs/udf/inode.c:2059 udf_add_entry+0xdab/0x2a20 fs/udf/namei.c:496 udf_mkdir+0x145/0x650 fs/udf/namei.c:693 vfs_mkdir+0x508/0x7a0 fs/namei.c:3819 do_mkdirat+0x262/0x2d0 fs/namei.c:3842 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6a7efd35a9 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:00007f6a7d546168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f6a7f0f3f80 RCX: 00007f6a7efd35a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000400 RBP: 00007f6a7f02e7b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc69b50b9f R14: 00007f6a7d546300 R15: 0000000000022000 Allocated by task 10488: __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 __netdev_alloc_skb+0x76/0x460 net/core/skbuff.c:407 netdev_alloc_skb include/linux/skbuff.h:2680 [inline] dev_alloc_skb include/linux/skbuff.h:2693 [inline] __ieee80211_beacon_get+0xc7d/0x1a30 net/mac80211/tx.c:4352 ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463 ieee80211_beacon_get include/net/mac80211.h:4484 [inline] mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 Freed by task 10488: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 skb_free_head net/core/skbuff.c:563 [inline] skb_release_data+0x6de/0x920 net/core/skbuff.c:583 skb_release_all net/core/skbuff.c:640 [inline] __kfree_skb net/core/skbuff.c:654 [inline] consume_skb+0x113/0x3d0 net/core/skbuff.c:714 mac80211_hwsim_tx_frame+0x133/0x210 drivers/net/wireless/mac80211_hwsim.c:1557 mac80211_hwsim_beacon_tx+0x3f8/0x680 drivers/net/wireless/mac80211_hwsim.c:1595 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 The buggy address belongs to the object at ffff888097216a80 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 120 bytes to the right of 512-byte region [ffff888097216a80, ffff888097216c80) The buggy address belongs to the page: page:ffffea00025c8580 count:1 mapcount:0 mapping:ffff88813bff0940 index:0xffff888097216a80 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea000287e7c8 ffffea0002cdb608 ffff88813bff0940 raw: ffff888097216a80 ffff888097216080 0000000100000005 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888097216b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888097216c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888097216c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888097216d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888097216d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== overlayfs: unrecognized mount option "lo0" or missing value overlayfs: overlapping lowerdir path overlayfs: unrecognized mount option "lodir=.:;ale0³¥X¿€û(‰xæ䵂7Þòû »û…®Ž÷Íüq‚ù*ôæ¾" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lodir=.:;ale0³¥X¿€û(‰xæ䵂7Þòû »û…®Ž÷Íüq‚ù*ôæ¾" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value overlayfs: unrecognized mount option "lo0" or missing value