audit: type=1800 audit(1666101212.784:16): pid=10038 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.2" name="file0" dev="sda1" ino=13960 res=0 audit: type=1800 audit(1666101212.874:17): pid=10039 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="file0" dev="sda1" ino=13961 res=0 ================================================================== audit: type=1800 audit(1666101213.084:18): pid=10040 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.0" name="file0" dev="sda1" ino=13962 res=0 BUG: KASAN: use-after-free in __lock_acquire+0x2c57/0x3f20 kernel/locking/lockdep.c:3369 Read of size 8 at addr ffff888054daf538 by task syz-executor.3/10010 audit: type=1804 audit(1666101213.974:19): pid=10034 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir2261888153/syzkaller.9whQD8/23/file0" dev="sda1" ino=13960 res=1 CPU: 1 PID: 10010 Comm: syz-executor.3 Not tainted 4.14.295-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report mm/kasan/report.c:409 [inline] __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430 audit: type=1804 audit(1666101213.984:20): pid=10036 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir17133575/syzkaller.XEVrzw/12/file0" dev="sda1" ino=13962 res=1 __lock_acquire+0x2c57/0x3f20 kernel/locking/lockdep.c:3369 audit: type=1804 audit(1666101213.994:21): pid=10039 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir3431700805/syzkaller.D8XvWQ/13/file0" dev="sda1" ino=13961 res=1 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_write_lock_bh include/linux/rwlock_api_smp.h:203 [inline] _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:320 sock_orphan include/net/sock.h:1713 [inline] nr_release+0x5b/0x340 net/netrom/af_netrom.c:524 __sock_release+0xcd/0x2b0 net/socket.c:602 sock_close+0x15/0x20 net/socket.c:1139 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xa44/0x2850 kernel/exit.c:868 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2412 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f469935d5a9 RSP: 002b:00007f4697cd0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: fffffffffffffffc RBX: 00007f469947df80 RCX: 00007f469935d5a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 00007f46993b8580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff8aa7cd1f R14: 00007f4697cd0300 R15: 0000000000022000 Allocated by task 10010: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x15a/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] sk_prot_alloc+0x1ba/0x290 net/core/sock.c:1484 sk_alloc+0x36/0xcd0 net/core/sock.c:1538 nr_create+0x99/0x5c0 net/netrom/af_netrom.c:436 __sock_create+0x303/0x620 net/socket.c:1275 sock_create net/socket.c:1315 [inline] SYSC_socket net/socket.c:1345 [inline] SyS_socket+0xd1/0x1b0 net/socket.c:1325 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Freed by task 10048: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kfree+0xc9/0x250 mm/slab.c:3815 sk_prot_free net/core/sock.c:1521 [inline] __sk_destruct+0x5e3/0x760 net/core/sock.c:1600 sk_destruct net/core/sock.c:1615 [inline] __sk_free+0xd9/0x2d0 net/core/sock.c:1623 sk_free+0x2b/0x40 net/core/sock.c:1634 sock_put include/net/sock.h:1664 [inline] nr_heartbeat_expiry+0x2ba/0x310 net/netrom/nr_timer.c:152 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 The buggy address belongs to the object at ffff888054daf1c0 which belongs to the cache kmalloc-2048 of size 2048 The buggy address is located 888 bytes inside of 2048-byte region [ffff888054daf1c0, ffff888054daf9c0) The buggy address belongs to the page: page:ffffea0001536b80 count:1 mapcount:0 mapping:ffff888054dae0c0 index:0x0 compound_mapcount: 0 flags: 0xfff00000008100(slab|head) raw: 00fff00000008100 ffff888054dae0c0 0000000000000000 0000000100000003 raw: ffffea00015309a0 ffffea000153afa0 ffff88813fe74c40 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888054daf400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888054daf480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888054daf500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888054daf580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888054daf600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================