Messages in this thread | | | Date | Thu, 01 Aug 2019 08:28:07 -0700 | Subject | WARNING in sysfs_create_file_ns | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: 7829a896 usb-fuzzer: main usb gadget fuzzer driver git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=12119440600000 kernel config: https://syzkaller.appspot.com/x/.config?x=f6d4561982f71f63 dashboard link: https://syzkaller.appspot.com/bug?extid=5b9bba68c833c84a1135 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1486787fa00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11aa97d8600000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+5b9bba68c833c84a1135@syzkaller.appspotmail.com
usbvision_audio_off: can't write reg usb 1-1: usbvision_write_reg: failed: error -2 usb 1-1: usbvision_write_reg: failed: error -2 usb 1-1: usbvision_write_reg: failed: error -2 usb 1-1: usbvision_write_reg: failed: error -2 usb 1-1: usbvision_write_reg: failed: error -2 usbvision_i2c_register: can't write reg videodev: could not get a free minor usb 1-1: USBVision[129]: video_register_device() failed WARNING: CPU: 1 PID: 22 at fs/sysfs/file.c:327 sysfs_create_file_ns+0x13c/0x1c0 fs/sysfs/file.c:327 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.2.0-rc6+ #13 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 panic+0x292/0x6c9 kernel/panic.c:219 __warn.cold+0x20/0x4b kernel/panic.c:576 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986 RIP: 0010:sysfs_create_file_ns+0x13c/0x1c0 fs/sysfs/file.c:327 Code: 85 82 00 00 00 41 55 48 8b 7b 30 31 d2 48 89 ee 44 8b 4c 24 50 44 8b 44 24 40 e8 af f9 ff ff 41 89 c5 58 eb 0d e8 54 85 b6 ff <0f> 0b 41 bd ea ff ff ff e8 47 85 b6 ff 44 89 e8 48 ba 00 00 00 00 RSP: 0018:ffff8881d9f97130 EFLAGS: 00010293 RAX: ffff8881d9f88000 RBX: ffff8881cbb0a490 RCX: ffffffff8266f244 RDX: 0000000000000000 RSI: ffffffff8186565c RDI: ffff8881cbb0a490 RBP: ffffffff8779e1a0 R08: ffff8881d9f88000 R09: ffffed103b665d30 R10: ffffed103b665d2f R11: ffff8881db32e97f R12: 1ffff1103b3f2e27 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8881cbb0a4c0 sysfs_create_file include/linux/sysfs.h:513 [inline] device_create_file+0xe6/0x1d0 drivers/base/core.c:1559 usbvision_create_sysfs drivers/media/usb/usbvision/usbvision-video.c:252 [inline] usbvision_probe.cold+0x1a73/0x1d69 drivers/media/usb/usbvision/usbvision-video.c:1530 usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361 really_probe+0x281/0x660 drivers/base/dd.c:509 driver_probe_device+0x104/0x210 drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2111 usb_set_configuration+0xdf6/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 drivers/usb/core/driver.c:266 really_probe+0x281/0x660 drivers/base/dd.c:509 driver_probe_device+0x104/0x210 drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 drivers/base/bus.c:454 __device_attach+0x217/0x360 drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:514 device_add+0xae6/0x16f0 drivers/base/core.c:2111 usb_new_device.cold+0x8c1/0x1016 drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x1ada/0x3590 drivers/usb/core/hub.c:5432 process_one_work+0x905/0x1570 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x30b/0x410 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..
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