powermate: config urb returned -71 powermate 6-1:0.0: powermate_irq - usb_submit_urb failed with result: -19 powermate: config urb returned -108 ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x3ee7/0x56d0 kernel/locking/lockdep.c:4923 Read of size 8 at addr ffff88811b764258 by task swapper/1/0 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.0.0-rc7-syzkaller-00946-g00988f70a076 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x2ba/0x719 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 __lock_acquire+0x3ee7/0x56d0 kernel/locking/lockdep.c:4923 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 powermate_config_complete+0x79/0xb0 drivers/input/misc/powermate.c:202 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1671 usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1754 dummy_timer+0x11ff/0x32c0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1c0/0x9a9 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline] RIP: 0010:acpi_safe_halt+0x6f/0xb0 drivers/acpi/processor_idle.c:113 Code: fb 84 db 74 06 5b e9 60 f5 4f fb e8 5b f5 4f fb e8 46 62 56 fb 66 90 e8 4f f5 4f fb 0f 00 2d 18 08 76 00 e8 43 f5 4f fb fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 0e f2 4f fb 48 85 db RSP: 0018:ffffc9000011fd20 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888100360000 RSI: ffffffff85f6168d RDI: 0000000000000000 RBP: ffff888109691864 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000001 R14: ffff888109691800 R15: ffff88810a423804 acpi_idle_do_entry drivers/acpi/processor_idle.c:555 [inline] acpi_idle_enter+0x524/0x6a0 drivers/acpi/processor_idle.c:692 cpuidle_enter_state+0x1ab/0xd30 drivers/cpuidle/cpuidle.c:239 cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:356 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3e8/0x590 kernel/sched/idle.c:303 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400 start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:262 secondary_startup_64_no_verify+0xce/0xdb Allocated by task 37: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:437 [inline] ____kasan_kmalloc mm/kasan/common.c:516 [inline] __kasan_kmalloc+0x81/0xa0 mm/kasan/common.c:525 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] powermate_probe+0x24a/0x12a0 drivers/input/misc/powermate.c:323 usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:560 [inline] really_probe+0x249/0xb90 drivers/base/dd.c:639 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808 __device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:1008 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbd5/0x1e90 drivers/base/core.c:3517 usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573 hub_port_connect drivers/usb/core/hub.c:5353 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x26c7/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Freed by task 4190: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:45 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:367 [inline] ____kasan_slab_free+0x14a/0x1b0 mm/kasan/common.c:329 kasan_slab_free include/linux/kasan.h:200 [inline] slab_free_hook mm/slub.c:1759 [inline] slab_free_freelist_hook mm/slub.c:1785 [inline] slab_free mm/slub.c:3539 [inline] kfree+0xca/0x5c0 mm/slub.c:4567 powermate_disconnect+0x1ce/0x250 drivers/input/misc/powermate.c:432 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:550 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:542 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x1f86/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 __kasan_record_aux_stack+0x9f/0xb0 mm/kasan/generic.c:348 kvfree_call_rcu+0x74/0x940 kernel/rcu/tree.c:3322 ip_ma_put net/ipv4/igmp.c:171 [inline] ip_ma_put+0x112/0x170 net/ipv4/igmp.c:167 __ip_mc_dec_group+0x426/0x510 net/ipv4/igmp.c:1694 inetdev_event+0x933/0x1610 net/ipv4/devinet.c:1588 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945 call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] dev_close_many+0x2ff/0x630 net/core/dev.c:1545 unregister_netdevice_many+0x3fa/0x1920 net/core/dev.c:10836 unregister_netdevice_queue+0x2dd/0x3c0 net/core/dev.c:10793 unregister_netdevice include/linux/netdevice.h:3032 [inline] unregister_netdev+0x18/0x20 net/core/dev.c:10921 usbnet_disconnect+0xd8/0x270 drivers/net/usb/usbnet.c:1615 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:550 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:542 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x1f86/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Second to last potentially related work creation: kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38 __kasan_record_aux_stack+0x9f/0xb0 mm/kasan/generic.c:348 kvfree_call_rcu+0x74/0x940 kernel/rcu/tree.c:3322 drop_sysctl_table+0x3c0/0x4e0 fs/proc/proc_sysctl.c:1716 unregister_sysctl_table fs/proc/proc_sysctl.c:1754 [inline] unregister_sysctl_table+0xc0/0x190 fs/proc/proc_sysctl.c:1729 __devinet_sysctl_unregister net/ipv4/devinet.c:2609 [inline] devinet_sysctl_unregister net/ipv4/devinet.c:2637 [inline] inetdev_destroy net/ipv4/devinet.c:327 [inline] inetdev_event+0xcaa/0x1610 net/ipv4/devinet.c:1602 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1945 call_netdevice_notifiers_extack net/core/dev.c:1983 [inline] call_netdevice_notifiers net/core/dev.c:1997 [inline] unregister_netdevice_many+0xa59/0x1920 net/core/dev.c:10862 unregister_netdevice_queue+0x2dd/0x3c0 net/core/dev.c:10793 unregister_netdevice include/linux/netdevice.h:3032 [inline] unregister_netdev+0x18/0x20 net/core/dev.c:10921 usbnet_disconnect+0xd8/0x270 drivers/net/usb/usbnet.c:1615 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:550 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:542 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x1f86/0x4610 drivers/usb/core/hub.c:5735 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 The buggy address belongs to the object at ffff88811b764200 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 88 bytes inside of 256-byte region [ffff88811b764200, ffff88811b764300) The buggy address belongs to the physical page: page:ffffea00046dd900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11b764 head:ffffea00046dd900 order:1 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 dead000000000100 dead000000000122 ffff888100041b40 raw: 0000000000000000 0000000080100010 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 4158, tgid 4158 (udevd), ts 81925554957, free_ts 81705601085 prep_new_page mm/page_alloc.c:2532 [inline] get_page_from_freelist+0x11cc/0x2a20 mm/page_alloc.c:4283 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5515 __alloc_pages_node include/linux/gfp.h:243 [inline] alloc_slab_page mm/slub.c:1831 [inline] allocate_slab+0x80/0x3d0 mm/slub.c:1974 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x7f1/0xe10 mm/slub.c:3036 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123 slab_alloc_node mm/slub.c:3214 [inline] __kmalloc_node+0x12a/0x360 mm/slub.c:4473 kmalloc_array_node include/linux/slab.h:695 [inline] kcalloc_node include/linux/slab.h:700 [inline] memcg_alloc_slab_cgroups+0x8b/0x140 mm/memcontrol.c:2830 account_slab mm/slab.h:630 [inline] allocate_slab+0x2db/0x3d0 mm/slub.c:1990 new_slab mm/slub.c:2034 [inline] ___slab_alloc+0x7f1/0xe10 mm/slub.c:3036 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3123 slab_alloc_node mm/slub.c:3214 [inline] slab_alloc mm/slub.c:3256 [inline] __kmem_cache_alloc_lru mm/slub.c:3263 [inline] kmem_cache_alloc_lru+0x4f5/0x6e0 mm/slub.c:3280 alloc_inode_sb include/linux/fs.h:3103 [inline] alloc_inode+0x168/0x230 fs/inode.c:262 iget_locked+0x1b7/0x6f0 fs/inode.c:1287 kernfs_get_inode+0x47/0x520 fs/kernfs/inode.c:254 kernfs_iop_lookup+0x1e5/0x320 fs/kernfs/dir.c:1153 __lookup_slow+0x24c/0x460 fs/namei.c:1685 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1449 [inline] free_pcp_prepare+0x5d2/0xb80 mm/page_alloc.c:1499 free_unref_page_prepare mm/page_alloc.c:3380 [inline] free_unref_page+0x19/0x420 mm/page_alloc.c:3476 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x78/0x80 mm/kasan/common.c:447 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc_node mm/slub.c:3248 [inline] kmem_cache_alloc_node+0x309/0x3c0 mm/slub.c:3298 __alloc_skb+0x210/0x2f0 net/core/skbuff.c:422 alloc_skb include/linux/skbuff.h:1257 [inline] alloc_skb_with_frags+0x93/0x6c0 net/core/skbuff.c:6021 sock_alloc_send_pskb+0x7a3/0x930 net/core/sock.c:2665 unix_dgram_sendmsg+0x415/0x1b50 net/unix/af_unix.c:1912 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 __sys_sendto+0x236/0x340 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88811b764100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88811b764180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88811b764200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88811b764280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811b764300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: fb sti 1: 84 db test %bl,%bl 3: 74 06 je 0xb 5: 5b pop %rbx 6: e9 60 f5 4f fb jmpq 0xfb4ff56b b: e8 5b f5 4f fb callq 0xfb4ff56b 10: e8 46 62 56 fb callq 0xfb56625b 15: 66 90 xchg %ax,%ax 17: e8 4f f5 4f fb callq 0xfb4ff56b 1c: 0f 00 2d 18 08 76 00 verw 0x760818(%rip) # 0x76083b 23: e8 43 f5 4f fb callq 0xfb4ff56b 28: fb sti 29: f4 hlt * 2a: 9c pushfq <-- trapping instruction 2b: 5b pop %rbx 2c: 81 e3 00 02 00 00 and $0x200,%ebx 32: fa cli 33: 31 ff xor %edi,%edi 35: 48 89 de mov %rbx,%rsi 38: e8 0e f2 4f fb callq 0xfb4ff24b 3d: 48 85 db test %rbx,%rbx