ci2 starts bisection 2023-09-10 14:44:07.480357787 +0000 UTC m=+174835.753682440 bisecting fixing commit since 71761b36c37ae15a09fdd4d4adcc98bb939c426c building syzkaller on d2ee9228555a1697ea8957f68403df8e4c55f42d ensuring issue is reproducible on original commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c testing commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8f34d18c6c252868486bd773136ce02dfaa3fe1eea65891d92b0034e8a6b2929 run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in worker_thread run #3: crashed: KASAN: use-after-free Read in process_one_work run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: crashed: KASAN: use-after-free Read in worker_thread run #9: crashed: KASAN: use-after-free Read in worker_thread run #10: crashed: KASAN: use-after-free Read in worker_thread run #11: crashed: KASAN: use-after-free Read in worker_thread run #12: crashed: KASAN: use-after-free Read in worker_thread run #13: crashed: KASAN: use-after-free Read in process_one_work run #14: crashed: KASAN: use-after-free Read in worker_thread run #15: crashed: KASAN: use-after-free Read in worker_thread run #16: OK run #17: OK run #18: crashed: KASAN: use-after-free Read in worker_thread run #19: OK representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 70d3929b97c78025935cce2d6914ce9ae6bd2ffe8e588b834ac8a6cbede15c22 run #0: crashed: KASAN: use-after-free Read in process_one_work run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in worker_thread run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: crashed: KASAN: use-after-free Read in process_one_work run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in process_one_work, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed kconfig minimization: base=5179 full=6523 leaves diff=250 split chunks (needed=false): <250> split chunk #0 of len 250 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 8f1bb20d2a3849b1132701023360e15b0fd6158d8f65a4acb0a2a601e2a39469 run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in process_one_work run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN BUG LOCKDEP], they are not needed testing commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3c74df35b54a1aa0fb2495cf9fc6f3142b6968b94950f64d5f7c8de954a81eb5 run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in process_one_work run #2: crashed: KASAN: use-after-free Read in process_one_work run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in process_one_work run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: crashed: KASAN: use-after-free Read in process_one_work run #9: OK representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 2b2ba7940032bd1353170e0f5994f9ce5f53daa542fb3b46a81707451995cf1b run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in process_one_work run #3: crashed: KASAN: use-after-free Read in process_one_work run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: crashed: KASAN: use-after-free Read in worker_thread run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: b4cba96be18125917943f43175477bebb61d5b736ec7d79cb939081fdc793e65 run #0: crashed: KASAN: use-after-free Read in process_one_work run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in process_one_work run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: OK run #7: crashed: KASAN: use-after-free Read in worker_thread run #8: OK run #9: OK representative crash: KASAN: use-after-free Read in process_one_work, types: [KASAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 71761b36c37ae15a09fdd4d4adcc98bb939c426c gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 71761b36c37ae15a09fdd4d4adcc98bb939c426c: net/socket.c:1225: undefined reference to `wext_handle_ioctl' net/socket.c:3420: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:329: undefined reference to `wext_proc_init' net/core/net-procfs.c:345: undefined reference to `wext_proc_exit' minimized to 50 configs; suspects: [HID_ZEROPLUS USB_NET_CDC_MBIM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_DM9601 USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF] disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD cd94fe67fd3323953016b8193f5be75982da96c8 testing commit cd94fe67fd3323953016b8193f5be75982da96c8 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c6c2fbfc826fb6b892974bdb65aa1d01c90c7b64dacc620520daa2aadf3593ce run #0: crashed: KASAN: use-after-free Read in worker_thread run #1: crashed: KASAN: use-after-free Read in worker_thread run #2: crashed: KASAN: use-after-free Read in worker_thread run #3: crashed: KASAN: use-after-free Read in worker_thread run #4: crashed: KASAN: use-after-free Read in worker_thread run #5: crashed: KASAN: use-after-free Read in worker_thread run #6: crashed: KASAN: use-after-free Read in process_one_work run #7: crashed: KASAN: use-after-free Read in process_one_work run #8: crashed: KASAN: use-after-free Read in worker_thread run #9: crashed: KASAN: use-after-free Read in process_one_work representative crash: KASAN: use-after-free Read in worker_thread, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h38m18.45833172s (build: 18m31.428546337s, test: 1h17m16.535934262s) crash still not fixed or there were kernel test errors commit msg: ANDROID: ABI: Update symbols to qcom whitelist crash: KASAN: use-after-free Read in worker_thread ================================================================== BUG: KASAN: use-after-free in worker_thread+0x877/0xf20 kernel/workqueue.c:2441 Read of size 8 at addr ffff88811490ece0 by task kworker/0:5/391 CPU: 0 PID: 391 Comm: kworker/0:5 Not tainted 6.1.25-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Workqueue: 0x0 (wg-kex-wg1) Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x105/0x148 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x158/0x4e0 mm/kasan/report.c:427 kasan_report+0x13c/0x170 mm/kasan/report.c:531 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351 worker_thread+0x877/0xf20 kernel/workqueue.c:2441 kthread+0x215/0x270 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Allocated by task 6: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:379 [inline] __kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388 kasan_kmalloc include/linux/kasan.h:212 [inline] __do_kmalloc_node mm/slab_common.c:957 [inline] __kmalloc_node+0xa9/0x180 mm/slab_common.c:964 kmalloc_node include/linux/slab.h:579 [inline] kvmalloc_node+0x46/0xf0 mm/util.c:586 kvmalloc include/linux/slab.h:706 [inline] kvzalloc include/linux/slab.h:714 [inline] alloc_netdev_mqs+0x5f/0xe50 net/core/dev.c:10590 alloc_etherdev_mqs+0x22/0x30 net/ethernet/eth.c:394 usbnet_probe+0x16f/0x22b0 drivers/net/usb/usbnet.c:1693 usb_probe_interface+0x466/0x8e0 drivers/usb/core/driver.c:396 really_probe+0x214/0x760 drivers/base/dd.c:639 __driver_probe_device+0x15e/0x220 drivers/base/dd.c:778 driver_probe_device+0x4f/0x350 drivers/base/dd.c:808 __device_attach_driver+0x294/0x350 drivers/base/dd.c:936 bus_for_each_drv+0x152/0x1b0 drivers/base/bus.c:427 __device_attach+0x2bc/0x450 drivers/base/dd.c:1008 device_initial_probe+0xe/0x10 drivers/base/dd.c:1057 bus_probe_device+0x8d/0x190 drivers/base/bus.c:487 device_add+0x718/0xc20 drivers/base/core.c:3664 usb_set_configuration+0x158b/0x1b80 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x66/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd2/0x1e0 drivers/usb/core/driver.c:293 really_probe+0x214/0x760 drivers/base/dd.c:639 __driver_probe_device+0x15e/0x220 drivers/base/dd.c:778 driver_probe_device+0x4f/0x350 drivers/base/dd.c:808 __device_attach_driver+0x294/0x350 drivers/base/dd.c:936 bus_for_each_drv+0x152/0x1b0 drivers/base/bus.c:427 __device_attach+0x2bc/0x450 drivers/base/dd.c:1008 device_initial_probe+0xe/0x10 drivers/base/dd.c:1057 bus_probe_device+0x8d/0x190 drivers/base/bus.c:487 device_add+0x718/0xc20 drivers/base/core.c:3664 usb_new_device+0xdac/0x16d0 drivers/usb/core/hub.c:2590 hub_port_connect drivers/usb/core/hub.c:5370 [inline] hub_port_connect_change drivers/usb/core/hub.c:5514 [inline] port_event drivers/usb/core/hub.c:5670 [inline] hub_event+0x21b2/0x3f40 drivers/usb/core/hub.c:5752 process_one_work+0x6de/0xd00 kernel/workqueue.c:2296 worker_thread+0x892/0xf20 kernel/workqueue.c:2443 kthread+0x215/0x270 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Freed by task 6: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249 kasan_slab_free include/linux/kasan.h:178 [inline] slab_free_hook mm/slub.c:1744 [inline] slab_free_freelist_hook mm/slub.c:1770 [inline] slab_free mm/slub.c:3681 [inline] __kmem_cache_free+0x1fa/0x370 mm/slub.c:3694 kfree+0x7a/0xf0 mm/slab_common.c:1009 kvfree+0x20/0x30 mm/util.c:632 netdev_freemem+0x3a/0x50 net/core/dev.c:10544 netdev_release+0x64/0x90 net/core/net-sysfs.c:1906 device_release+0x91/0x140 kobject_cleanup lib/kobject.c:681 [inline] kobject_release lib/kobject.c:712 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0xfc/0x140 lib/kobject.c:729 put_device+0xe/0x10 drivers/base/core.c:3772 free_netdev+0x2d4/0x390 net/core/dev.c:10737 usbnet_disconnect+0x207/0x350 drivers/net/usb/usbnet.c:1632 usb_unbind_interface+0x171/0x720 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:550 [inline] __device_release_driver drivers/base/dd.c:1253 [inline] device_release_driver_internal+0x4a8/0x790 drivers/base/dd.c:1279 device_release_driver+0xd/0x10 drivers/base/dd.c:1302 bus_remove_device+0x229/0x300 drivers/base/bus.c:529 device_del+0x558/0xc00 drivers/base/core.c:3852 usb_disable_device+0x2b8/0x570 drivers/usb/core/message.c:1419 usb_disconnect+0x2b8/0x790 drivers/usb/core/hub.c:2253 hub_port_connect drivers/usb/core/hub.c:5214 [inline] hub_port_connect_change drivers/usb/core/hub.c:5514 [inline] port_event drivers/usb/core/hub.c:5670 [inline] hub_event+0x16d5/0x3f40 drivers/usb/core/hub.c:5752 process_one_work+0x6de/0xd00 kernel/workqueue.c:2296 process_scheduled_works kernel/workqueue.c:2359 [inline] worker_thread+0xb8f/0xf20 kernel/workqueue.c:2445 kthread+0x215/0x270 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496 insert_work+0x4d/0x270 kernel/workqueue.c:1365 __queue_work+0x7bd/0xa10 kernel/workqueue.c:1524 queue_work_on+0x11c/0x130 kernel/workqueue.c:1552 usbnet_link_change+0xca/0xe0 usbnet_probe+0x18be/0x22b0 drivers/net/usb/usbnet.c:1834 usb_probe_interface+0x466/0x8e0 drivers/usb/core/driver.c:396 really_probe+0x214/0x760 drivers/base/dd.c:639 __driver_probe_device+0x15e/0x220 drivers/base/dd.c:778 driver_probe_device+0x4f/0x350 drivers/base/dd.c:808 __device_attach_driver+0x294/0x350 drivers/base/dd.c:936 bus_for_each_drv+0x152/0x1b0 drivers/base/bus.c:427 __device_attach+0x2bc/0x450 drivers/base/dd.c:1008 device_initial_probe+0xe/0x10 drivers/base/dd.c:1057 bus_probe_device+0x8d/0x190 drivers/base/bus.c:487 device_add+0x718/0xc20 drivers/base/core.c:3664 usb_set_configuration+0x158b/0x1b80 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0x66/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd2/0x1e0 drivers/usb/core/driver.c:293 really_probe+0x214/0x760 drivers/base/dd.c:639 __driver_probe_device+0x15e/0x220 drivers/base/dd.c:778 driver_probe_device+0x4f/0x350 drivers/base/dd.c:808 __device_attach_driver+0x294/0x350 drivers/base/dd.c:936 bus_for_each_drv+0x152/0x1b0 drivers/base/bus.c:427 __device_attach+0x2bc/0x450 drivers/base/dd.c:1008 device_initial_probe+0xe/0x10 drivers/base/dd.c:1057 bus_probe_device+0x8d/0x190 drivers/base/bus.c:487 device_add+0x718/0xc20 drivers/base/core.c:3664 usb_new_device+0xdac/0x16d0 drivers/usb/core/hub.c:2590 hub_port_connect drivers/usb/core/hub.c:5370 [inline] hub_port_connect_change drivers/usb/core/hub.c:5514 [inline] port_event drivers/usb/core/hub.c:5670 [inline] hub_event+0x21b2/0x3f40 drivers/usb/core/hub.c:5752 process_one_work+0x6de/0xd00 kernel/workqueue.c:2296 worker_thread+0x892/0xf20 kernel/workqueue.c:2443 kthread+0x215/0x270 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 The buggy address belongs to the object at ffff88811490e000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 3296 bytes inside of 4096-byte region [ffff88811490e000, ffff88811490f000) The buggy address belongs to the physical page: page:ffffea0004524200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x114908 head:ffffea0004524200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 ffffea0004524400 dead000000000002 ffff888100043380 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 98, tgid 98 (udevd), ts 4950293185, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook mm/page_alloc.c:2582 [inline] prep_new_page+0x512/0x5e0 mm/page_alloc.c:2589 get_page_from_freelist+0x273d/0x27d0 mm/page_alloc.c:4387 __alloc_pages+0x39f/0x780 mm/page_alloc.c:5664 allocate_slab mm/slub.c:1959 [inline] new_slab+0xcb/0x440 mm/slub.c:2012 ___slab_alloc+0x611/0x9a0 mm/slub.c:3200 __slab_alloc+0x52/0x90 mm/slub.c:3299 slab_alloc_node mm/slub.c:3384 [inline] __kmem_cache_alloc_node+0x1af/0x250 mm/slub.c:3457 __do_kmalloc_node mm/slab_common.c:956 [inline] __kmalloc_node+0x98/0x180 mm/slab_common.c:964 kmalloc_node include/linux/slab.h:579 [inline] kvmalloc_node+0x46/0xf0 mm/util.c:586 kvmalloc include/linux/slab.h:706 [inline] seq_buf_alloc fs/seq_file.c:38 [inline] seq_read_iter+0x1aa/0xb90 fs/seq_file.c:210 kernfs_fop_read_iter+0x126/0x3d0 fs/kernfs/file.c:275 call_read_iter include/linux/fs.h:2209 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x780/0x9a0 fs/read_write.c:470 ksys_read+0x15c/0x240 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x76/0x80 fs/read_write.c:621 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page_owner free stack trace missing Memory state around the buggy address: ffff88811490eb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811490ec00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88811490ec80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88811490ed00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811490ed80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== usb 3-1: new high-speed USB device number 4 using dummy_hcd usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 16 usb 3-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8B has invalid maxpacket 64 usb 3-1: New USB device found, idVendor=0a46, idProduct=9621, bcdDevice=4f.32 usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 3-1: Product: syz usb 3-1: Manufacturer: syz usb 3-1: SerialNumber: syz usb 3-1: config 0 descriptor?? dm9601: No valid MAC address in EEPROM, using fe:f8:e5:78:21:0f dm9601 3-1:0.0 eth1: register 'dm9601' at usb-dummy_hcd.2-1, Davicom DM96xx USB 10/100 Ethernet, fe:f8:e5:78:21:0f usb 3-1: USB disconnect, device number 4 dm9601 3-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.2-1, Davicom DM96xx USB 10/100 Ethernet usb 6-1: new high-speed USB device number 5 using dummy_hcd usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 16 usb 6-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8B has invalid maxpacket 64 usb 6-1: New USB device found, idVendor=0a46, idProduct=9621, bcdDevice=4f.32 usb 6-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 6-1: Product: syz usb 6-1: Manufacturer: syz usb 6-1: SerialNumber: syz usb 6-1: config 0 descriptor?? dm9601: No valid MAC address in EEPROM, using fe:f8:e5:78:21:0f dm9601 6-1:0.0 eth1: register 'dm9601' at usb-dummy_hcd.5-1, Davicom DM96xx USB 10/100 Ethernet, fe:f8:e5:78:21:0f usb 6-1: USB disconnect, device number 5 dm9601 6-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.5-1, Davicom DM96xx USB 10/100 Ethernet usb 1-1: new high-speed USB device number 6 using dummy_hcd usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 16 usb 1-1: config 0 interface 0 altsetting 0 bulk endpoint 0x8B has invalid maxpacket 64 usb 1-1: New USB device found, idVendor=0a46, idProduct=9621, bcdDevice=4f.32 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-1: Product: syz usb 1-1: Manufacturer: syz usb 1-1: SerialNumber: syz usb 1-1: config 0 descriptor?? dm9601: No valid MAC address in EEPROM, using fe:f8:e5:78:21:0f dm9601 1-1:0.0 eth1: register 'dm9601' at usb-dummy_hcd.0-1, Davicom DM96xx USB 10/100 Ethernet, fe:f8:e5:78:21:0f usb 1-1: USB disconnect, device number 6 dm9601 1-1:0.0 eth1: unregister 'dm9601' usb-dummy_hcd.0-1, Davicom DM96xx USB 10/100 Ethernet