syzbot


general protection fault in drain_workqueue

Status: closed as invalid on 2019/11/19 13:41
Reported-by: syzbot+09139d1a5ed6b898e29d@syzkaller.appspotmail.com
First crash: 1360d, last: 1299d

Sample crash report:
pegasus 4-1:0.103: can't reset MAC
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN PTI
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.1.0-rc3-319004-g43151d6 #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:__lock_acquire+0xadc/0x37c0 kernel/locking/lockdep.c:3573
Code: 00 0f 85 c1 1d 00 00 48 81 c4 10 01 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 35 1e 00 00 49 81 7d 00 00 19 01 96 0f 84 e8 f5
RSP: 0018:ffff8880a8476e08 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8880a8469880 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8880a8477160 R11: ffff8880a8469880 R12: 0000000000000000
R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a1f740000 CR3: 0000000090bc0000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lock_acquire+0x10d/0x2f0 kernel/locking/lockdep.c:4211
 __mutex_lock_common kernel/locking/mutex.c:925 [inline]
 __mutex_lock+0xfe/0x12b0 kernel/locking/mutex.c:1072
 drain_workqueue+0x29/0x470 kernel/workqueue.c:2934
 destroy_workqueue+0x23/0x6d0 kernel/workqueue.c:4320
 pegasus_dec_workqueue drivers/net/usb/pegasus.c:1133 [inline]
 pegasus_dec_workqueue drivers/net/usb/pegasus.c:1129 [inline]
 pegasus_probe+0x1073/0x15e0 drivers/net/usb/pegasus.c:1228
 usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
 really_probe+0x2da/0xb10 drivers/base/dd.c:509
 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
 __device_attach+0x223/0x3a0 drivers/base/dd.c:844
 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
 device_add+0xad2/0x16e0 drivers/base/core.c:2106
 usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2023
 generic_probe+0xa2/0xda drivers/usb/core/generic.c:210
 usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266
 really_probe+0x2da/0xb10 drivers/base/dd.c:509
 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
 __device_attach+0x223/0x3a0 drivers/base/dd.c:844
 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
 device_add+0xad2/0x16e0 drivers/base/core.c:2106
 usb_new_device.cold+0x537/0xccf 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+0x138e/0x3b00 drivers/usb/core/hub.c:5432
 process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
 process_scheduled_works kernel/workqueue.c:2331 [inline]
 worker_thread+0x7b0/0xe20 kernel/workqueue.c:2417
 kthread+0x313/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 01015c397d4bdcc4 ]---
RIP: 0010:__lock_acquire+0xadc/0x37c0 kernel/locking/lockdep.c:3573
Code: 00 0f 85 c1 1d 00 00 48 81 c4 10 01 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 35 1e 00 00 49 81 7d 00 00 19 01 96 0f 84 e8 f5
RSP: 0018:ffff8880a8476e08 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffff8880a8469880 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8880a8477160 R11: ffff8880a8469880 R12: 0000000000000000
R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880ad000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3a1f740000 CR3: 0000000090bc0000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (6):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci2-upstream-usb 2019/05/11 20:43 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 0637a7f0 .config console log report syz
ci2-upstream-usb 2019/07/11 11:45 https://github.com/google/kasan.git usb-fuzzer 7829a896a587 ff7bf04c .config console log report
ci2-upstream-usb 2019/07/04 16:56 https://github.com/google/kasan.git usb-fuzzer 7829a896a587 55565fa0 .config console log report
ci2-upstream-usb 2019/07/02 23:36 https://github.com/google/kasan.git usb-fuzzer 7829a896a587 55565fa0 .config console log report
ci2-upstream-usb 2019/06/14 19:12 https://github.com/google/kasan.git usb-fuzzer 69bbe8c72e6f 442206d7 .config console log report
ci2-upstream-usb 2019/05/11 20:02 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 0637a7f0 .config console log report
* Struck through repros no longer work on HEAD.