================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x3ab9/0x5660 kernel/locking/lockdep.c:4923 Read of size 8 at addr ffff88810d0a3328 by task syz-executor.4/4393 CPU: 1 PID: 4393 Comm: syz-executor.4 Not tainted 5.19.0-rc7-syzkaller-00199-g8288c99fc263 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313 print_report mm/kasan/report.c:429 [inline] kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491 __lock_acquire+0x3ab9/0x5660 kernel/locking/lockdep.c:4923 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 remove_wait_queue+0x1d/0x180 kernel/sched/wait.c:54 hidraw_read+0x7a1/0xaa0 drivers/hid/hidraw.c:74 vfs_read+0x1ef/0x5d0 fs/read_write.c:480 ksys_read+0x127/0x250 fs/read_write.c:620 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 RIP: 0033:0x7f4cd3ce9209 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4cd345f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f4cd3dfbf60 RCX: 00007f4cd3ce9209 RDX: 0000000000000050 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007f4cd3d43161 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc6bb1603f R14: 00007f4cd345f300 R15: 0000000000022000 Allocated by task 6: 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:436 [inline] ____kasan_kmalloc mm/kasan/common.c:515 [inline] __kasan_kmalloc+0x81/0xa0 mm/kasan/common.c:524 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] hidraw_connect+0x4b/0x440 drivers/hid/hidraw.c:543 hid_connect+0x10b4/0x17c0 drivers/hid/hid-core.c:2172 hid_hw_start drivers/hid/hid-core.c:2277 [inline] hid_hw_start+0xa2/0x130 drivers/hid/hid-core.c:2268 thrustmaster_probe+0xce/0xc00 drivers/hid/hid-thrustmaster.c:294 hid_device_probe+0x2bd/0x3f0 drivers/hid/hid-core.c:2598 call_driver_probe drivers/base/dd.c:555 [inline] really_probe+0x23e/0xb90 drivers/base/dd.c:634 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:917 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:989 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbda/0x1ea0 drivers/base/core.c:3428 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+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:555 [inline] really_probe+0x23e/0xb90 drivers/base/dd.c:634 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:917 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:989 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbda/0x1ea0 drivers/base/core.c:3428 usb_set_configuration+0x101e/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:555 [inline] really_probe+0x23e/0xb90 drivers/base/dd.c:634 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:917 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x1e4/0x530 drivers/base/dd.c:989 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xbda/0x1ea0 drivers/base/core.c:3428 usb_new_device.cold+0x641/0x1091 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+0x25d5/0x4690 drivers/usb/core/hub.c:5735 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Freed by task 4132: 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:366 [inline] ____kasan_slab_free+0x10f/0x190 mm/kasan/common.c:328 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:3536 [inline] kfree+0xc1/0x4f0 mm/slub.c:4584 drop_ref+0x28f/0x390 drivers/hid/hidraw.c:335 hidraw_disconnect+0x48/0x60 drivers/hid/hidraw.c:599 hid_disconnect+0x130/0x1a0 drivers/hid/hid-core.c:2254 hid_hw_stop+0x12/0x70 drivers/hid/hid-core.c:2297 hid_device_remove+0xbf/0x200 drivers/hid/hid-core.c:2627 device_remove+0xc8/0x170 drivers/base/dd.c:543 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1248 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3615 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:545 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:537 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1248 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3615 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x278/0x6ec 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+0x1e83/0x4690 drivers/usb/core/hub.c:5735 process_one_work+0x996/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ef/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 ffff88810d0a3300 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 40 bytes inside of 192-byte region [ffff88810d0a3300, ffff88810d0a33c0) The buggy address belongs to the physical page: page:ffffea00043428c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d0a3 flags: 0x200000000000200(slab|node=0|zone=2) raw: 0200000000000200 ffffea00045db4c0 dead000000000002 ffff888100041a00 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 71, tgid 71 (kworker/1:2), ts 79825120633, free_ts 79636299118 prep_new_page mm/page_alloc.c:2456 [inline] get_page_from_freelist+0x138c/0x27a0 mm/page_alloc.c:4198 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5426 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272 alloc_slab_page mm/slub.c:1824 [inline] allocate_slab+0x26c/0x3c0 mm/slub.c:1969 new_slab mm/slub.c:2029 [inline] ___slab_alloc+0x98f/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] __kmalloc+0x306/0x320 mm/slub.c:4442 kmalloc include/linux/slab.h:605 [inline] usb_alloc_urb+0xa5/0xb0 drivers/usb/core/urb.c:74 r8712_xmit_resource_alloc+0x39/0xf0 drivers/staging/rtl8712/xmit_linux.c:113 _r8712_init_xmit_priv+0xdf4/0x1e40 drivers/staging/rtl8712/rtl871x_xmit.c:137 r8712_init_drv_sw+0xbb/0x570 drivers/staging/rtl8712/os_intfs.c:311 r871xu_drv_init.cold+0x2a3/0x10e5 drivers/staging/rtl8712/usb_intf.c:386 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:555 [inline] really_probe+0x23e/0xb90 drivers/base/dd.c:634 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1371 [inline] free_pcp_prepare+0x537/0xb80 mm/page_alloc.c:1421 free_unref_page_prepare mm/page_alloc.c:3343 [inline] free_unref_page+0x19/0x5a0 mm/page_alloc.c:3438 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:446 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:750 [inline] slab_alloc_node mm/slub.c:3243 [inline] slab_alloc mm/slub.c:3251 [inline] __kmem_cache_alloc_lru mm/slub.c:3258 [inline] kmem_cache_alloc+0x241/0x480 mm/slub.c:3268 getname_flags.part.0+0x50/0x4f0 fs/namei.c:139 getname_flags include/linux/audit.h:323 [inline] getname fs/namei.c:218 [inline] __do_sys_unlink fs/namei.c:4308 [inline] __se_sys_unlink fs/namei.c:4306 [inline] __x64_sys_unlink+0xb1/0x110 fs/namei.c:4306 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: ffff88810d0a3200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810d0a3280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc >ffff88810d0a3300: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88810d0a3380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88810d0a3400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================