Hello, syzbot found the following crash on: HEAD commit: d6ff8147 usb: gadget: add raw-gadget interface git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=15e35181e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=90a3d9bed5648419 dashboard link: https://syzkaller.appspot.com/bug?extid=fac5fdfd55355c99284a compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1162e81de00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17e3aa2de00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+fac5fdfd55355c99284a@xxxxxxxxxxxxxxxxxxxxxxxxx list_del corruption, ffff8881d5809070->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:45! invalid opcode: 0000 [#1] SMP KASAN CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:__list_del_entry_valid.cold+0x23/0x55 lib/list_debug.c:45 Code: e8 e0 b4 3e ff 0f 0b 48 89 ee 48 c7 c7 40 28 fc 85 e8 cf b4 3e ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 80 27 fc 85 e8 bb b4 3e ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 27 fc 85 e8 a7 b4 3e ff 0f 0b RSP: 0018:ffff8881da266cd8 EFLAGS: 00010086 RAX: 000000000000004e RBX: ffff8881d5809000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff812977dd RDI: ffffed103b44cd8d RBP: ffff8881d5809070 R08: 000000000000004e R09: ffffed103b66439f R10: ffffed103b66439e R11: ffff8881db321cf3 R12: dead000000000122 R13: dead000000000100 R14: ffff8881cde645d8 R15: 00000000ffffffb9 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa54a51f518 CR3: 0000000007021000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:132 [inline] list_del include/linux/list.h:146 [inline] __uwb_rc_neh_rm+0x6b/0x2a0 drivers/staging/uwb/neh.c:243 uwb_rc_neh_rm+0x30/0x60 drivers/staging/uwb/neh.c:259 uwb_rc_cmd_async+0x29a/0x310 drivers/staging/uwb/reset.c:93 __uwb_rc_cmd+0x10f/0x1e0 drivers/staging/uwb/reset.c:171 uwb_rc_cmd+0xc2/0x130 drivers/staging/uwb/reset.c:220 uwb_rc_reset+0x15e/0x218 drivers/staging/uwb/reset.c:292 uwb_rc_setup+0x84/0x320 drivers/staging/uwb/lc-rc.c:282 uwb_rc_add+0x246/0x42f drivers/staging/uwb/lc-rc.c:351 hwarc_probe+0x3ce/0xb40 drivers/staging/uwb/hwa-rc.c:843 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:374 really_probe+0x290/0xac0 drivers/base/dd.c:551 driver_probe_device+0x223/0x350 drivers/base/dd.c:724 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431 __device_attach+0x217/0x390 drivers/base/dd.c:897 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0x1459/0x1bf0 drivers/base/core.c:2487 usb_set_configuration+0xe47/0x17d0 drivers/usb/core/message.c:2023 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241 usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272 really_probe+0x290/0xac0 drivers/base/dd.c:551 driver_probe_device+0x223/0x350 drivers/base/dd.c:724 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:831 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431 __device_attach+0x217/0x390 drivers/base/dd.c:897 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0x1459/0x1bf0 drivers/base/core.c:2487 usb_new_device.cold+0x540/0xcd0 drivers/usb/core/hub.c:2544 hub_port_connect drivers/usb/core/hub.c:5191 [inline] hub_port_connect_change drivers/usb/core/hub.c:5331 [inline] port_event drivers/usb/core/hub.c:5477 [inline] hub_event+0x21cb/0x4300 drivers/usb/core/hub.c:5559 process_one_work+0x94b/0x1620 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 861748268a9035e2 ]--- RIP: 0010:__list_del_entry_valid.cold+0x23/0x55 lib/list_debug.c:45 Code: e8 e0 b4 3e ff 0f 0b 48 89 ee 48 c7 c7 40 28 fc 85 e8 cf b4 3e ff 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 80 27 fc 85 e8 bb b4 3e ff <0f> 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 27 fc 85 e8 a7 b4 3e ff 0f 0b RSP: 0018:ffff8881da266cd8 EFLAGS: 00010086 RAX: 000000000000004e RBX: ffff8881d5809000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff812977dd RDI: ffffed103b44cd8d RBP: ffff8881d5809070 R08: 000000000000004e R09: ffffed103b66439f R10: ffffed103b66439e R11: ffff8881db321cf3 R12: dead000000000122 R13: dead000000000100 R14: ffff8881cde645d8 R15: 00000000ffffffb9 FS: 0000000000000000(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa54a51f518 CR3: 0000000007021000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
