Hello,
syzbot found the following crash on:
HEAD commit: 69bbe8c7 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=143d5972a00000
kernel config: https://syzkaller.appspot.com/x/.config?x=c309d28e15db39c5
dashboard link: https://syzkaller.appspot.com/bug?extid=c2a1fa67c02faa0de723
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: [email protected]
usb 2-1: Direct firmware load for prism2_ru.fw failed with error -2
prism2_usb 2-1:0.191 (unnamed net_device) (uninitialized): prism2_usb:
Firmware not available, but not essential
prism2_usb 2-1:0.191 (unnamed net_device) (uninitialized): prism2_usb: can
continue to use card anyway.
------------[ cut here ]------------
usb 2-1: BOGUS urb xfer, pipe 3 != type 1
WARNING: CPU: 0 PID: 5587 at drivers/usb/core/urb.c:477
usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 5587 Comm: kworker/0:2 Not tainted 5.2.0-rc1+ #9
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+0x292/0x6df kernel/panic.c:218
__warn.cold+0x20/0x45 kernel/panic.c:575
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:usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Code: 4d 85 ed 74 2c e8 b8 de e5 fd 4c 89 f7 e8 b0 7e 11 ff 41 89 d8 44 89
e1 4c 89 ea 48 89 c6 48 c7 c7 80 a3 17 86 e8 73 9b bb fd <0f> 0b e9 20 f4
ff ff e8 8c de e5 fd 4c 89 f2 48 b8 00 00 00 00 00
RSP: 0018:ffff8881cb876f98 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff812824fd RDI: ffffed103970ede5
RBP: ffff8881d33a5c00 R08: ffff8881cbf5b000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
R13: ffff8881d2fa3918 R14: ffff8881d5feab20 R15: ffff8881d60e8008
submit_rx_urb+0x2e1/0x3e0 drivers/staging/wlan-ng/hfa384x_usb.c:353
hfa384x_drvr_start+0x1cb/0x420 drivers/staging/wlan-ng/hfa384x_usb.c:2484
prism2sta_ifstate+0x2ea/0x4a0 drivers/staging/wlan-ng/prism2sta.c:471
prism2sta_probe_usb.cold+0x1c8/0x49e
drivers/staging/wlan-ng/prism2usb.c:112
usb_probe_interface+0x30b/0x7a0 drivers/usb/core/driver.c:361
really_probe+0x287/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c4/0x230 drivers/base/dd.c:777
bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e6/0x290 drivers/base/bus.c:514
device_add+0xae6/0x1700 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+0xa2/0x100 drivers/usb/core/driver.c:266
really_probe+0x287/0x660 drivers/base/dd.c:509
driver_probe_device+0x104/0x210 drivers/base/dd.c:670
__device_attach_driver+0x1c4/0x230 drivers/base/dd.c:777
bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
__device_attach+0x217/0x360 drivers/base/dd.c:843
bus_probe_device+0x1e6/0x290 drivers/base/bus.c:514
device_add+0xae6/0x1700 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+0x1adc/0x35a0 drivers/usb/core/hub.c:5432
process_one_work+0x90a/0x1580 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x30e/0x420 kernel/kthread.c:254
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..
---
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 [email protected].
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
On Wed, 29 May 2019, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 69bbe8c7 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=143d5972a00000
> kernel config: https://syzkaller.appspot.com/x/.config?x=c309d28e15db39c5
> dashboard link: https://syzkaller.appspot.com/bug?extid=c2a1fa67c02faa0de723
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: [email protected]
>
> usb 2-1: Direct firmware load for prism2_ru.fw failed with error -2
> prism2_usb 2-1:0.191 (unnamed net_device) (uninitialized): prism2_usb:
> Firmware not available, but not essential
> prism2_usb 2-1:0.191 (unnamed net_device) (uninitialized): prism2_usb: can
> continue to use card anyway.
> ------------[ cut here ]------------
> usb 2-1: BOGUS urb xfer, pipe 3 != type 1
> WARNING: CPU: 0 PID: 5587 at drivers/usb/core/urb.c:477
> usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
> Kernel panic - not syncing: panic_on_warn set ...
> CPU: 0 PID: 5587 Comm: kworker/0:2 Not tainted 5.2.0-rc1+ #9
> 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+0x292/0x6df kernel/panic.c:218
> __warn.cold+0x20/0x45 kernel/panic.c:575
> 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:usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
> Code: 4d 85 ed 74 2c e8 b8 de e5 fd 4c 89 f7 e8 b0 7e 11 ff 41 89 d8 44 89
> e1 4c 89 ea 48 89 c6 48 c7 c7 80 a3 17 86 e8 73 9b bb fd <0f> 0b e9 20 f4
> ff ff e8 8c de e5 fd 4c 89 f2 48 b8 00 00 00 00 00
> RSP: 0018:ffff8881cb876f98 EFLAGS: 00010286
> RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
> RDX: 0000000000040000 RSI: ffffffff812824fd RDI: ffffed103970ede5
> RBP: ffff8881d33a5c00 R08: ffff8881cbf5b000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
> R13: ffff8881d2fa3918 R14: ffff8881d5feab20 R15: ffff8881d60e8008
> submit_rx_urb+0x2e1/0x3e0 drivers/staging/wlan-ng/hfa384x_usb.c:353
> hfa384x_drvr_start+0x1cb/0x420 drivers/staging/wlan-ng/hfa384x_usb.c:2484
> prism2sta_ifstate+0x2ea/0x4a0 drivers/staging/wlan-ng/prism2sta.c:471
> prism2sta_probe_usb.cold+0x1c8/0x49e
> drivers/staging/wlan-ng/prism2usb.c:112
The problem is that hfa384x_create() in hfa384x_usb.c assumes ep1-IN
and ep2-OUT exist and are bulk endpoints, without actually checking.
Since this function does not return an error code, it's not clear how
to respond when the expected endpoints do not exist.
Alan Stern
syzbot has found a reproducer for the following crash on:
HEAD commit: 69bbe8c7 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=15a2f82ea00000
kernel config: https://syzkaller.appspot.com/x/.config?x=193d8457178b3229
dashboard link: https://syzkaller.appspot.com/bug?extid=c2a1fa67c02faa0de723
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16f32f54a00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1040360ea00000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: [email protected]
prism2_usb 1-1:0.188 (unnamed net_device) (uninitialized): prism2_usb:
Checking for firmware prism2_ru.fw
usb 1-1: Direct firmware load for prism2_ru.fw failed with error -2
prism2_usb 1-1:0.188 (unnamed net_device) (uninitialized): prism2_usb:
Firmware not available, but not essential
prism2_usb 1-1:0.188 (unnamed net_device) (uninitialized): prism2_usb: can
continue to use card anyway.
------------[ cut here ]------------
usb 1-1: BOGUS urb xfer, pipe 3 != type 1
WARNING: CPU: 1 PID: 21 at drivers/usb/core/urb.c:477
usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.2.0-rc1+ #10
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:218
__warn.cold+0x20/0x4b kernel/panic.c:575
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:usb_submit_urb+0x1188/0x13b0 drivers/usb/core/urb.c:477
Code: 4d 85 ed 74 2c e8 b8 06 e9 fd 4c 89 f7 e8 c0 44 13 ff 41 89 d8 44 89
e1 4c 89 ea 48 89 c6 48 c7 c7 20 1c 1a 86 e8 03 db be fd <0f> 0b e9 20 f4
ff ff e8 8c 06 e9 fd 4c 89 f2 48 b8 00 00 00 00 00
RSP: 0018:ffff8881d9efef98 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8127e98d RDI: ffffed103b3dfde5
RBP: ffff8881d160f800 R08: ffff8881d9e36000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003
R13: ffff8881cfcc5cd8 R14: ffff8881d0a9b3a0 R15: ffff8881c544c208
submit_rx_urb+0x2e1/0x3e0 drivers/staging/wlan-ng/hfa384x_usb.c:353
hfa384x_drvr_start+0x1cb/0x420 drivers/staging/wlan-ng/hfa384x_usb.c:2484
prism2sta_ifstate+0x2ea/0x4a0 drivers/staging/wlan-ng/prism2sta.c:471
prism2sta_probe_usb.cold+0x1c8/0x49e
drivers/staging/wlan-ng/prism2usb.c:112
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:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x30b/0x410 kernel/kthread.c:254
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..