Hello, syzbot found the following issue on: HEAD commit: 7eb2bf871454 usb: misc: usb3503: call clk_disable_unprepar.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=1536bcaf080000 kernel config: https://syzkaller.appspot.com/x/.config?x=c3701a9706c1806e dashboard link: https://syzkaller.appspot.com/bug?extid=08bc30b3c98573f139b8 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+08bc30b3c98573f139b8@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KASAN: use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline] BUG: KASAN: use-after-free in do_raw_spin_lock+0x261/0x2a0 kernel/locking/spinlock_debug.c:114 Read of size 4 at addr ffff888115d24c1c by task kworker/1:2/70 CPU: 1 PID: 70 Comm: kworker/1:2 Not tainted 6.0.0-rc4-syzkaller-00066-g7eb2bf871454 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 Workqueue: events __usb_queue_reset_device Call Trace: <TASK> __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 debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline] do_raw_spin_lock+0x261/0x2a0 kernel/locking/spinlock_debug.c:114 __mutex_unlock_slowpath+0x18e/0x5e0 kernel/locking/mutex.c:932 hiddev_disconnect+0x154/0x1c0 drivers/hid/usbhid/hiddev.c:940 hid_disconnect+0xb4/0x1a0 drivers/hid/hid-core.c:2252 hid_hw_stop+0x12/0x70 drivers/hid/hid-core.c:2297 cmhid_remove+0x38/0x50 drivers/hid/hid-cmedia.c:182 hid_device_remove+0xbf/0x200 drivers/hid/hid-core.c:2627 device_remove+0xc8/0x170 drivers/base/dd.c:548 __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 hid_remove_device drivers/hid/hid-core.c:2796 [inline] hid_destroy_device+0xe1/0x150 drivers/hid/hid-core.c:2815 usbhid_disconnect+0x9f/0xe0 drivers/hid/usbhid/hid-core.c:1451 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 usb_driver_release_interface drivers/usb/core/driver.c:627 [inline] usb_forced_unbind_intf+0x136/0x210 drivers/usb/core/driver.c:1118 unbind_marked_interfaces.isra.0+0x170/0x1e0 drivers/usb/core/driver.c:1141 usb_unbind_and_rebind_marked_interfaces+0x34/0x70 drivers/usb/core/driver.c:1202 usb_reset_device+0x846/0xac0 drivers/usb/core/hub.c:6142 __usb_queue_reset_device+0x68/0x90 drivers/usb/core/message.c:1904 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x854/0x1080 kernel/workqueue.c:2438 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 </TASK> Allocated by task 4334: 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] hiddev_connect+0x246/0x5c0 drivers/hid/usbhid/hiddev.c:893 hid_connect+0x26d/0x17c0 drivers/hid/hid-core.c:2169 hid_hw_start drivers/hid/hid-core.c:2277 [inline] hid_hw_start+0xa2/0x130 drivers/hid/hid-core.c:2268 cmhid_probe+0x104/0x160 drivers/hid/hid-cmedia.c:165 hid_device_probe+0x2bd/0x3f0 drivers/hid/hid-core.c:2598 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 hid_add_device+0x344/0x9d0 drivers/hid/hid-core.c:2748 usbhid_probe+0xb49/0x1040 drivers/hid/usbhid/hid-core.c:1424 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 14583: 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:1754 [inline] slab_free_freelist_hook mm/slub.c:1780 [inline] slab_free mm/slub.c:3534 [inline] kfree+0xca/0x5c0 mm/slub.c:4562 hiddev_release+0x402/0x520 drivers/hid/usbhid/hiddev.c:232 __fput+0x277/0x9d0 fs/file_table.c:320 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xad5/0x2930 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 get_signal+0x238c/0x2610 kernel/signal.c:2857 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop kernel/entry/common.c:166 [inline] exit_to_user_mode_prepare+0x156/0x200 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888115d24c00 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 28 bytes inside of 512-byte region [ffff888115d24c00, ffff888115d24e00) The buggy address belongs to the physical page: page:ffffea0004574900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x115d24 head:ffffea0004574900 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 dead000000000100 dead000000000122 ffff888100041c80 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 11894, tgid 11894 (udevd), ts 853331188558, free_ts 844278582420 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+0x1a6/0x270 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:1824 [inline] allocate_slab+0x27e/0x3d0 mm/slub.c:1969 new_slab mm/slub.c:2029 [inline] ___slab_alloc+0x7b4/0xda0 mm/slub.c:3031 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118 slab_alloc_node mm/slub.c:3209 [inline] slab_alloc mm/slub.c:3251 [inline] kmem_cache_alloc_trace+0x2fb/0x3b0 mm/slub.c:3282 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] kernfs_fop_open+0x2fa/0xfd0 fs/kernfs/file.c:680 do_dentry_open+0x49c/0x1240 fs/open.c:878 do_open fs/namei.c:3557 [inline] path_openat+0x1c92/0x28f0 fs/namei.c:3691 do_filp_open+0x1b6/0x400 fs/namei.c:3718 do_sys_openat2+0x16d/0x4c0 fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_sys_openat fs/open.c:1343 [inline] __se_sys_openat fs/open.c:1338 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1338 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 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 usbhid_disconnect+0xa7/0xe0 drivers/hid/usbhid/hid-core.c:1452 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 Memory state around the buggy address: ffff888115d24b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888115d24b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888115d24c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888115d24c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888115d24d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
