QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl ================================================================== BUG: KASAN: use-after-free in hlist_add_head include/linux/list.h:673 [inline] BUG: KASAN: use-after-free in enqueue_timer kernel/time/timer.c:520 [inline] BUG: KASAN: use-after-free in __mod_timer kernel/time/timer.c:1021 [inline] BUG: KASAN: use-after-free in mod_timer+0x11d3/0x15b0 kernel/time/timer.c:1071 Write of size 8 at addr ffff8801d46dc608 by task syz-executor2/16330 CPU: 0 PID: 16330 Comm: syz-executor2 Not tainted 4.13.0-mm1+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 print_address_description+0x73/0x250 mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report+0x24e/0x340 mm/kasan/report.c:409 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:435 hlist_add_head include/linux/list.h:673 [inline] enqueue_timer kernel/time/timer.c:520 [inline] __mod_timer kernel/time/timer.c:1021 [inline] mod_timer+0x11d3/0x15b0 kernel/time/timer.c:1071 sk_reset_timer+0x22/0x50 net/core/sock.c:2664 inet_csk_reset_xmit_timer include/net/inet_connection_sock.h:243 [inline] tcp_v4_err+0x16f7/0x17e0 net/ipv4/tcp_ipv4.c:492 icmp_socket_deliver+0x21a/0x440 net/ipv4/icmp.c:771 icmp_unreach+0x3d0/0xc50 net/ipv4/icmp.c:879 icmp_rcv+0x6b6/0x1250 net/ipv4/icmp.c:1060 ip_local_deliver_finish+0x2e2/0xba0 net/ipv4/ip_input.c:216 NF_HOOK include/linux/netfilter.h:249 [inline] ip_local_deliver+0x1ce/0x6e0 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:478 [inline] ip_rcv_finish+0x8db/0x19c0 net/ipv4/ip_input.c:397 NF_HOOK include/linux/netfilter.h:249 [inline] ip_rcv+0xc3f/0x17d0 net/ipv4/ip_input.c:488 __netif_receive_skb_core+0x19af/0x33d0 net/core/dev.c:4423 __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4461 process_backlog+0x203/0x740 net/core/dev.c:5139 napi_poll net/core/dev.c:5537 [inline] net_rx_action+0x792/0x1910 net/core/dev.c:5603 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284 invoke_softirq kernel/softirq.c:364 [inline] irq_exit+0x1d3/0x210 kernel/softirq.c:405 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x177/0x710 arch/x86/kernel/apic/apic.c:1048 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:770 RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:787 [inline] RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] RIP: 0010:_raw_spin_unlock_irq+0x56/0x70 kernel/locking/spinlock.c:199 RSP: 0000:ffff8801d08571b0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffff8801db225c00 RCX: 0000000000000000 RDX: 1ffffffff0b592ff RSI: 0000000000000001 RDI: ffffffff85ac97f8 RBP: ffff8801d08571b8 R08: ffff8801db225c18 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d9f20140 R13: 1ffff1003a10ae3f R14: ffff8801d03f4380 R15: ffff8801d03f4380 finish_lock_switch kernel/sched/sched.h:1335 [inline] finish_task_switch+0x1d3/0x740 kernel/sched/core.c:2657 context_switch kernel/sched/core.c:2793 [inline] __schedule+0x8f0/0x2070 kernel/sched/core.c:3366 schedule+0x108/0x440 kernel/sched/core.c:3425 schedule_timeout+0x1ce/0x250 kernel/time/timer.c:1720 do_wait_for_common kernel/sched/completion.c:90 [inline] __wait_for_common kernel/sched/completion.c:111 [inline] wait_for_common kernel/sched/completion.c:122 [inline] wait_for_completion_killable+0x41c/0x870 kernel/sched/completion.c:248 call_usermodehelper_exec+0x2e8/0x4a0 kernel/umh.c:444 call_modprobe kernel/kmod.c:99 [inline] __request_module+0x3ff/0xc00 kernel/kmod.c:171 inet_create+0xd3f/0xf50 net/ipv4/af_inet.c:291 __sock_create+0x4d4/0x850 net/socket.c:1262 sock_create net/socket.c:1302 [inline] SYSC_socket net/socket.c:1332 [inline] SyS_socket+0xeb/0x200 net/socket.c:1312 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x4520a9 RSP: 002b:00007fb9e629ec08 EFLAGS: 00000216 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00000000007182c0 RCX: 00000000004520a9 RDX: 0000000000000004 RSI: 0000000000000009 RDI: 0000000000000002 RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000000 R13: 0000000000a6f7ef R14: 00007fb9e629f9c0 R15: 0000000000000018 Allocated by task 16092: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551 __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node+0x47/0x70 mm/slab.c:3696 kmalloc_node include/linux/slab.h:535 [inline] kvmalloc_node+0x64/0xd0 mm/util.c:397 kvmalloc include/linux/mm.h:529 [inline] kvzalloc include/linux/mm.h:537 [inline] alloc_netdev_mqs+0x16e/0xed0 net/core/dev.c:8018 tun_set_iff drivers/net/tun.c:2022 [inline] __tun_chr_ioctl+0x12be/0x3d20 drivers/net/tun.c:2276 tun_chr_ioctl+0x2a/0x40 drivers/net/tun.c:2521 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe Freed by task 16092: save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59 save_stack+0x43/0xd0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3503 [inline] kfree+0xca/0x250 mm/slab.c:3820 kvfree+0x36/0x60 mm/util.c:416 netdev_freemem net/core/dev.c:7970 [inline] free_netdev+0x2cf/0x360 net/core/dev.c:8132 tun_set_iff drivers/net/tun.c:2105 [inline] __tun_chr_ioctl+0x2cf6/0x3d20 drivers/net/tun.c:2276 tun_chr_ioctl+0x2a/0x40 drivers/net/tun.c:2521 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe The buggy address belongs to the object at ffff8801d46d9200 which belongs to the cache kmalloc-16384 of size 16384 The buggy address is located 13320 bytes inside of 16384-byte region [ffff8801d46d9200, ffff8801d46dd200) The buggy address belongs to the page: page:ffffea000751b600 count:1 mapcount:0 mapping:ffff8801d46d9200 index:0x0 compound_mapcount: 0 flags: 0x200000000008100(slab|head) raw: 0200000000008100 ffff8801d46d9200 0000000000000000 0000000100000001 raw: ffffea0006668e20 ffffea0007285820 ffff8801dac02200 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d46dc500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d46dc580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8801d46dc600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8801d46dc680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801d46dc700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================