powermate: config urb returned -108 ================================================================== BUG: KASAN: use-after-free in trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline] BUG: KASAN: use-after-free in perf_trace_lock_acquire+0xf8/0x4a0 include/trace/events/lock.h:13 Read of size 8 at addr ffff888075c85a70 by task syz-executor.1/1382 CPU: 1 PID: 1382 Comm: syz-executor.1 Not tainted 5.16.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106 print_address_description+0x65/0x380 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report+0x19a/0x1f0 mm/kasan/report.c:450 trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline] perf_trace_lock_acquire+0xf8/0x4a0 include/trace/events/lock.h:13 trace_lock_acquire+0x161/0x190 include/trace/events/lock.h:13 lock_acquire+0xa5/0x4d0 kernel/locking/lockdep.c:5608 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 powermate_config_complete+0x6b/0xc0 drivers/input/misc/powermate.c:202 __usb_hcd_giveback_urb+0x375/0x520 drivers/usb/core/hcd.c:1656 dummy_timer+0x808/0x3150 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers+0x71a/0x910 kernel/time/timer.c:1734 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747 __do_softirq+0x392/0x7a3 kernel/softirq.c:558 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5641 Code: 08 4c 89 f7 e8 a2 ff 68 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11 RSP: 0018:ffffc9000463f820 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff920008c7f14 RCX: ffff88801900a758 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000463f978 R08: dffffc0000000000 R09: fffffbfff1ff3ddd R10: fffffbfff1ff3ddd R11: 0000000000000000 R12: 0000000000000246 R13: 1ffff920008c7f0c R14: ffffc9000463f8a0 R15: dffffc0000000000 rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:268 rcu_read_lock include/linux/rcupdate.h:688 [inline] percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline] percpu_ref_tryget+0x17/0x140 include/linux/percpu-refcount.h:266 css_tryget include/linux/cgroup.h:354 [inline] get_mem_cgroup_from_objcg+0xa1/0x120 mm/memcontrol.c:2751 obj_cgroup_uncharge_pages mm/memcontrol.c:2980 [inline] __memcg_kmem_uncharge_page+0xc9/0x1b0 mm/memcontrol.c:3058 memcg_kmem_uncharge_page include/linux/memcontrol.h:1728 [inline] free_thread_stack kernel/fork.c:281 [inline] release_task_stack+0xe9/0x260 kernel/fork.c:431 put_task_stack kernel/fork.c:442 [inline] copy_process+0x1a89/0x5ca0 kernel/fork.c:2471 kernel_clone+0x22a/0x7e0 kernel/fork.c:2582 __do_sys_clone kernel/fork.c:2699 [inline] __se_sys_clone kernel/fork.c:2683 [inline] __x64_sys_clone+0x245/0x2b0 kernel/fork.c:2683 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ffaf50942c1 Code: 48 85 ff 74 3d 48 85 f6 74 38 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 7c 13 74 01 c3 31 ed 58 5f ff d0 48 89 c7 b8 3c 00 00 00 RSP: 002b:00007fff20bdfed8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffaf39e7700 RCX: 00007ffaf50942c1 RDX: 00007ffaf39e79d0 RSI: 00007ffaf39e72f0 RDI: 00000000003d0f00 RBP: 00007fff20be0120 R08: 00007ffaf39e7700 R09: 00007ffaf39e7700 R10: 00007ffaf39e79d0 R11: 0000000000000206 R12: 00007fff20bdff8e R13: 00007fff20bdff8f R14: 00007ffaf39e7300 R15: 0000555556e3d940 Allocated by task 3667: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:269 [inline] kmem_cache_alloc_trace+0x9d/0x330 mm/slub.c:3261 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:724 [inline] powermate_probe+0x1eb/0x15f0 drivers/input/misc/powermate.c:323 usb_probe_interface+0x633/0xb40 drivers/usb/core/driver.c:396 call_driver_probe+0x96/0x250 really_probe+0x223/0x9b0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:751 driver_probe_device+0x50/0x240 drivers/base/dd.c:781 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:898 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:969 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3394 usb_set_configuration+0x1a86/0x2100 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238 usb_probe_device+0x13a/0x260 drivers/usb/core/driver.c:293 call_driver_probe+0x96/0x250 really_probe+0x223/0x9b0 drivers/base/dd.c:596 __driver_probe_device+0x1f8/0x3e0 drivers/base/dd.c:751 driver_probe_device+0x50/0x240 drivers/base/dd.c:781 __device_attach_driver+0x1e1/0x3b0 drivers/base/dd.c:898 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427 __device_attach+0x310/0x560 drivers/base/dd.c:969 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487 device_add+0x11c8/0x16d0 drivers/base/core.c:3394 usb_new_device+0x108a/0x1940 drivers/usb/core/hub.c:2563 hub_port_connect+0x100b/0x2910 drivers/usb/core/hub.c:5353 hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5497 port_event+0xb67/0x1220 drivers/usb/core/hub.c:5643 hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5725 process_one_work+0x853/0x1140 kernel/workqueue.c:2298 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Freed by task 1385: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x10d/0x150 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1749 slab_free mm/slub.c:3513 [inline] kfree+0xe1/0x330 mm/slub.c:4561 usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1205 [inline] device_release_driver_internal+0x523/0x7b0 drivers/base/dd.c:1236 bus_remove_device+0x2fd/0x410 drivers/base/bus.c:529 device_del+0x6f1/0xbf0 drivers/base/core.c:3581 usb_disable_device+0x407/0x800 drivers/usb/core/message.c:1419 usb_disconnect+0x33a/0x8a0 drivers/usb/core/hub.c:2225 hub_quiesce+0x185/0x330 drivers/usb/core/hub.c:1327 hub_disconnect+0xce/0x480 drivers/usb/core/hub.c:1722 usb_unbind_interface+0x1f2/0x860 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1205 [inline] device_release_driver_internal+0x523/0x7b0 drivers/base/dd.c:1236 proc_disconnect_claim+0x2f1/0x3c0 drivers/usb/core/devio.c:2464 usbdev_do_ioctl drivers/usb/core/devio.c:2747 [inline] usbdev_ioctl+0x14b6/0x6d00 drivers/usb/core/devio.c:2791 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xfa/0x130 mm/kasan/generic.c:348 kvfree_call_rcu+0x119/0x880 kernel/rcu/tree.c:3550 drop_sysctl_table+0x2cd/0x400 fs/proc/proc_sysctl.c:1647 drop_sysctl_table+0x2eb/0x400 fs/proc/proc_sysctl.c:1650 unregister_sysctl_table+0x86/0x130 fs/proc/proc_sysctl.c:1685 neigh_sysctl_unregister+0x74/0x90 net/core/neighbour.c:3810 devinet_sysctl_unregister net/ipv4/devinet.c:2633 [inline] inetdev_destroy net/ipv4/devinet.c:326 [inline] inetdev_event+0x774/0x1410 net/ipv4/devinet.c:1600 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2002 [inline] call_netdevice_notifiers_extack net/core/dev.c:2014 [inline] call_netdevice_notifiers net/core/dev.c:2028 [inline] unregister_netdevice_many+0xfae/0x19e0 net/core/dev.c:11080 sit_exit_batch_net+0x495/0x4e0 net/ipv6/sit.c:1950 ops_exit_list net/core/net_namespace.c:171 [inline] cleanup_net+0x7ec/0xc50 net/core/net_namespace.c:593 process_one_work+0x853/0x1140 kernel/workqueue.c:2298 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xfa/0x130 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2985 [inline] call_rcu+0x1c4/0xa70 kernel/rcu/tree.c:3065 fib6_info_release include/net/ip6_fib.h:337 [inline] ip6_route_info_create+0xd2d/0x1a50 net/ipv6/route.c:3853 ip6_route_add+0x22/0x120 net/ipv6/route.c:3867 addrconf_add_mroute net/ipv6/addrconf.c:2488 [inline] addrconf_add_dev+0x43c/0x620 net/ipv6/addrconf.c:2506 inet6_addr_add+0x218/0x1250 net/ipv6/addrconf.c:2922 inet6_rtm_newaddr+0x83d/0x2a90 net/ipv6/addrconf.c:4892 rtnetlink_rcv_msg+0x934/0xe60 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x814/0x9f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0xaea/0xe60 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg net/socket.c:724 [inline] __sys_sendto+0x42e/0x5b0 net/socket.c:2036 __do_sys_sendto net/socket.c:2048 [inline] __se_sys_sendto net/socket.c:2044 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2044 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff888075c85a00 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 112 bytes inside of 256-byte region [ffff888075c85a00, ffff888075c85b00) The buggy address belongs to the page: page:ffffea0001d72100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x75c84 head:ffffea0001d72100 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea00006ad080 dead000000000004 ffff888011441b40 raw: 0000000000000000 0000000000100010 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 0x52a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 25, ts 60475098505, free_ts 19537972996 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0x729/0x9e0 mm/page_alloc.c:4149 __alloc_pages+0x255/0x580 mm/page_alloc.c:5369 alloc_slab_page mm/slub.c:1793 [inline] allocate_slab+0xcc/0x540 mm/slub.c:1930 new_slab mm/slub.c:1993 [inline] ___slab_alloc+0x41e/0xc40 mm/slub.c:3022 __slab_alloc mm/slub.c:3109 [inline] slab_alloc_node mm/slub.c:3200 [inline] slab_alloc mm/slub.c:3242 [inline] __kmalloc+0x2eb/0x380 mm/slub.c:4419 kmalloc include/linux/slab.h:595 [inline] kzalloc include/linux/slab.h:724 [inline] fib6_info_alloc+0x2c/0xd0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x507/0x1a50 net/ipv6/route.c:3773 ip6_route_add+0x22/0x120 net/ipv6/route.c:3867 addrconf_prefix_route net/ipv6/addrconf.c:2424 [inline] addrconf_add_linklocal+0x6ef/0xb00 net/ipv6/addrconf.c:3199 addrconf_addr_gen+0x34c/0xdb0 addrconf_notify+0x17f4/0x2130 net/ipv6/addrconf.c:3613 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2002 [inline] netdev_state_change+0x1aa/0x270 net/core/dev.c:1393 linkwatch_do_dev+0x10a/0x160 net/core/link_watch.c:167 __linkwatch_run_queue+0x4f5/0x800 net/core/link_watch.c:213 linkwatch_event+0x48/0x50 net/core/link_watch.c:252 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0xd1c/0xe00 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page+0x7d/0x580 mm/page_alloc.c:3388 free_slab mm/slub.c:2033 [inline] discard_slab mm/slub.c:2039 [inline] __unfreeze_partials+0x1ab/0x200 mm/slub.c:2527 put_cpu_partial+0x116/0x180 mm/slub.c:2603 do_slab_free mm/slub.c:3501 [inline] ___cache_free+0xe6/0x120 mm/slub.c:3520 qlist_free_all mm/kasan/quarantine.c:165 [inline] kasan_quarantine_reduce+0x151/0x1c0 mm/kasan/quarantine.c:272 __kasan_slab_alloc+0x2f/0xf0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3234 [inline] kmem_cache_alloc_node+0x201/0x370 mm/slub.c:3270 __alloc_skb+0xd8/0x5a0 net/core/skbuff.c:414 alloc_skb include/linux/skbuff.h:1127 [inline] alloc_skb_with_frags+0xab/0x660 net/core/skbuff.c:6078 sock_alloc_send_pskb+0x928/0xa60 net/core/sock.c:2575 unix_dgram_sendmsg+0x816/0x2a50 net/unix/af_unix.c:1811 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg net/socket.c:724 [inline] sock_write_iter+0x37c/0x4e0 net/socket.c:1057 call_write_iter include/linux/fs.h:2162 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0xb11/0xe90 fs/read_write.c:590 ksys_write+0x18f/0x2c0 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 Memory state around the buggy address: ffff888075c85900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888075c85980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888075c85a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888075c85a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888075c85b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: 08 4c 89 f7 or %cl,-0x9(%rcx,%rcx,4) 4: e8 a2 ff 68 00 callq 0x68ffab 9: f6 84 24 81 00 00 00 testb $0x2,0x81(%rsp) 10: 02 11: 0f 85 13 02 00 00 jne 0x22a 17: 41 f7 c4 00 02 00 00 test $0x200,%r12d 1e: 74 01 je 0x21 20: fb sti 21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp) 28: e0 45 * 2a: 4b c7 04 2f 00 00 00 movq $0x0,(%r15,%r13,1) <-- trapping instruction 31: 00 32: 43 c7 44 2f 09 00 00 movl $0x0,0x9(%r15,%r13,1) 39: 00 00 3b: 43 rex.XB 3c: c7 .byte 0xc7 3d: 44 2f rex.R (bad) 3f: 11 .byte 0x11