Date:   Fri, 10 May 2019 06:57:05 -0700
From:   syzbot <syzbot+3f516a14255f95fc5599@...kaller.appspotmail.com>
To:     andreyknvl@...gle.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        rafael@...nel.org, syzkaller-bugs@...glegroups.com
Subject: general protection fault in yurex_interrupt

Hello,

syzbot found the following crash on:

HEAD commit:    43151d6c 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=12864eaca00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4183eeef650d1234
dashboard link: https://syzkaller.appspot.com/bug?extid=3f516a14255f95fc5599
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=161327b4a00000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+3f516a14255f95fc5599@...kaller.appspotmail.com

yurex 1-1:0.150: yurex_interrupt - unknown status received: -71
yurex 1-1:0.150: yurex_interrupt - unknown status received: -71
yurex 1-1:0.150: yurex_interrupt - unknown status received: -71
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: 1 PID: 5323 Comm: syz-executor.0 Not tainted 5.1.0-rc3-319004-g43151d6  
#6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
RIP: 0010:dev_name include/linux/device.h:1087 [inline]
RIP: 0010:__dev_printk+0x3f/0x215 drivers/base/core.c:3208
Code: 89 f5 53 e8 8e 53 1c fc 48 85 ed 0f 84 c9 01 00 00 e8 80 53 1c fc 48  
8d 7d 50 b8 ff ff 37 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <80> 3c 02 00 74  
05 e8 41 68 53 fc 4c 8b 7d 50 4d 85 ff 75 28 e8 53
RSP: 0018:ffff8880ad107930 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffffed1015a20f2d RCX: 00000000ffffffed
RDX: 0000000000000010 RSI: ffffffff855576f0 RDI: 0000000000000080
RBP: 0000000000000030 R08: ffff88809b7b1880 R09: ffffed1015a24fc9
R10: ffffed1015a24fc8 R11: ffff8880ad127e47 R12: ffffffff8f031080
R13: ffff8880ad107988 R14: 0000000000000000 R15: ffff8880a5a48d00
FS:  0000000000000000(0000) GS:ffff8880ad100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6c1085000 CR3: 000000001167a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
  <IRQ>
  _dev_err+0xdc/0x10e drivers/base/core.c:3251
  yurex_interrupt.cold+0x12e/0x13d drivers/usb/misc/yurex.c:183
  __usb_hcd_giveback_urb+0x1f4/0x470 drivers/usb/core/hcd.c:1758
  usb_hcd_giveback_urb+0x346/0x400 drivers/usb/core/hcd.c:1823
  __skb_queue_head_init include/linux/skbuff.h:1790 [inline]
  skbpoolfree drivers/block/aoe/aoedev.c:428 [inline]
  freedev drivers/block/aoe/aoedev.c:290 [inline]
  dummy_timer+0x1225/0x328d drivers/block/aoe/aoedev.c:359
  call_timer_fn+0x161/0x5f0 kernel/time/timer.c:1325
  expire_timers kernel/time/timer.c:1362 [inline]
  __run_timers kernel/time/timer.c:1681 [inline]
  __run_timers kernel/time/timer.c:1649 [inline]
  run_timer_softirq+0x58b/0x1400 kernel/time/timer.c:1694
  __do_softirq+0x22a/0x8cd kernel/softirq.c:293
  invoke_softirq kernel/softirq.c:374 [inline]
  irq_exit+0x187/0x1b0 kernel/softirq.c:414
  exiting_irq arch/x86/include/asm/apic.h:536 [inline]
  smp_apic_timer_interrupt+0xfe/0x4a0 arch/x86/kernel/apic/apic.c:1062
  apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
  </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x284/0x330 kernel/smp.c:302
Code: c3 e8 c0 a0 0a 00 48 8b 4c 24 08 48 8b 54 24 10 48 8d 74 24 40 8b 7c  
24 1c e8 28 fa ff ff 41 89 c4 eb 07 e8 9e a0 0a 00 f3 90 <8b> 5c 24 58 31  
ff 83 e3 01 89 de e8 fc a1 0a 00 85 db 75 e5 e8 83
RSP: 0018:ffff88809b037500 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88809b7b1880 RBX: 0000000000000001 RCX: ffffffff816729e4
RDX: 0000000000000000 RSI: ffffffff816729d2 RDI: 0000000000000005
RBP: ffff88809b0375e0 R08: ffff88809b7b1880 R09: ffffed1015a05c49
R10: ffffed1015a05c48 R11: ffff8880ad02e247 R12: 0000000000000000
R13: 0000000000000200 R14: 1ffff11013606ea4 R15: ffff880000001000
  smp_call_function_many+0x66c/0x7a0 kernel/smp.c:434
  flush_tlb_others arch/x86/include/asm/paravirt.h:68 [inline]
  flush_tlb_mm_range+0x1a4/0x260 arch/x86/mm/tlb.c:760
  tlb_flush arch/x86/include/asm/tlb.h:23 [inline]
  tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:173 [inline]
  tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:168 [inline]
  tlb_flush_mmu+0x1b6/0x510 mm/mmu_gather.c:82
  arch_tlb_finish_mmu+0x41/0x380 mm/mmu_gather.c:100
  tlb_finish_mmu+0x9c/0x100 mm/mmu_gather.c:259
  free_ldt_pgtables.part.0+0xd3/0x110 arch/x86/kernel/ldt.c:319
  arch_exit_mmap arch/x86/include/asm/mmu_context.h:258 [inline]
  exit_mmap+0x21c/0x4d0 mm/mmap.c:3127
  __mmput kernel/fork.c:1046 [inline]
  mmput+0x158/0x4a0 kernel/fork.c:1067
  exit_mm kernel/exit.c:546 [inline]
  do_exit+0x7f0/0x2e10 kernel/exit.c:863
  do_group_exit+0x12a/0x350 kernel/exit.c:980
  get_signal+0x3a3/0x1cb0 kernel/signal.c:2577
  do_signal+0x86/0x1750 arch/x86/kernel/signal.c:816
  exit_to_usermode_loop+0x1fc/0x270 arch/x86/entry/common.c:162
  prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
  syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
  do_syscall_64+0x40c/0x4f0 arch/x86/entry/common.c:293
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458da9
Code: Bad RIP value.
RSP: 002b:00007f2ca8685cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000073bf08 RCX: 0000000000458da9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000073bf08
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000073bf0c
R13: 00007ffc924b246f R14: 00007f2ca86869c0 R15: 000000000073bf0c
Modules linked in:
---[ end trace d1dc12b2d1082091 ]---
RIP: 0010:dev_name include/linux/device.h:1087 [inline]
RIP: 0010:__dev_printk+0x3f/0x215 drivers/base/core.c:3208
Code: 89 f5 53 e8 8e 53 1c fc 48 85 ed 0f 84 c9 01 00 00 e8 80 53 1c fc 48  
8d 7d 50 b8 ff ff 37 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <80> 3c 02 00 74  
05 e8 41 68 53 fc 4c 8b 7d 50 4d 85 ff 75 28 e8 53
RSP: 0018:ffff8880ad107930 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: ffffed1015a20f2d RCX: 00000000ffffffed
RDX: 0000000000000010 RSI: ffffffff855576f0 RDI: 0000000000000080
RBP: 0000000000000030 R08: ffff88809b7b1880 R09: ffffed1015a24fc9
R10: ffffed1015a24fc8 R11: ffff8880ad127e47 R12: ffffffff8f031080
R13: ffff8880ad107988 R14: 0000000000000000 R15: ffff8880a5a48d00
FS:  0000000000000000(0000) GS:ffff8880ad100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000458d7f CR3: 000000001167a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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