syzbot


BUG: corrupted list in usb_hcd_unlink_urb_from_ep (2)

Status: upstream: reported on 2022/09/28 07:08
Reported-by: syzbot+4f71c3f6a96519a45bd4@syzkaller.appspotmail.com
First crash: 64d, last: 64d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: corrupted list in usb_hcd_unlink_urb_from_ep 1 875d 873d 0/24 auto-closed as invalid on 2020/10/02 13:36

Sample crash report:
list_del corruption, ffff0001002dea18->next is NULL
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:50!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 16370 Comm: syz-executor.5 Not tainted 6.0.0-rc6-syzkaller-17739-gd2cd2931d2fd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __list_del_entry_valid+0x70/0xd0 lib/list_debug.c:49
lr : __list_del_entry_valid+0x70/0xd0 lib/list_debug.c:49
sp : ffff80000800bcc0
x29: ffff80000800bcc0 x28: ffff0000fde60700 x27: ffff0001002dea00
x26: ffff0000fde60708 x25: 0000000000000000 x24: ffff0000c526f440
x23: ffff0000c526f3c8 x22: ffff0000c526f440 x21: ffff0000c526f000
x20: ffff0001002dea18 x19: ffff0001002dea00 x18: 00000000000000c0
x17: ffff80000dd1b198 x16: ffff80000db59158 x15: ffff0000fdf28000
x14: 0000000000000000 x13: 0000000000002000 x12: ffff0000fdf28000
x11: ff808000081c30a4 x10: 0000000000000000 x9 : d6d49db26ddb9f00
x8 : d6d49db26ddb9f00 x7 : ffff8000081976e4 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff0001fefddcd0 x1 : 0000000000000103 x0 : 0000000000000033
Call trace:
 __list_del_entry_valid+0x70/0xd0 lib/list_debug.c:49
 __list_del_entry include/linux/list.h:134 [inline]
 list_del_init include/linux/list.h:206 [inline]
 usb_hcd_unlink_urb_from_ep+0x30/0x70 drivers/usb/core/hcd.c:1248
 dummy_timer+0x388/0x111c drivers/block/aoe/aoedev.c:504
 call_timer_fn+0x90/0x144 kernel/time/timer.c:1474
 expire_timers kernel/time/timer.c:1519 [inline]
 __run_timers+0x280/0x374 kernel/time/timer.c:1790
 run_timer_softirq+0x34/0x5c kernel/time/timer.c:1803
 _stext+0x168/0x37c
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
 call_on_irq_stack+0x2c/0x54
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
 invoke_softirq+0x70/0xbc kernel/softirq.c:452
 __irq_exit_rcu+0xf0/0x140 kernel/softirq.c:650
 irq_exit_rcu+0x10/0x40 kernel/softirq.c:662
 __el1_irq arch/arm64/kernel/entry-common.c:471 [inline]
 el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:485
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:490
 el1h_64_irq+0x64/0x68
 arch_local_irq_restore+0x8/0x10 arch/arm64/include/asm/irqflags.h:122
 lock_is_held include/linux/lockdep.h:283 [inline]
 rcu_read_lock_held+0x34/0x50 kernel/rcu/update.c:311
 xa_entry include/linux/xarray.h:1198 [inline]
 xas_reload+0x98/0x270 include/linux/xarray.h:1577
 next_uptodate_page+0x154/0x778 mm/filemap.c:3283
 next_map_page mm/filemap.c:3318 [inline]
 filemap_map_pages+0x474/0x5d8 mm/filemap.c:3390
 do_fault_around mm/memory.c:4487 [inline]
 do_read_fault mm/memory.c:4513 [inline]
 do_fault+0x140/0x550 mm/memory.c:4647
 handle_pte_fault mm/memory.c:4911 [inline]
 __handle_mm_fault mm/memory.c:5053 [inline]
 handle_mm_fault+0x784/0xa40 mm/memory.c:5151
 __do_page_fault arch/arm64/mm/fault.c:502 [inline]
 do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:602
 do_translation_fault+0x78/0x194 arch/arm64/mm/fault.c:685
 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:821
 el0_ia+0x8c/0x1c8 arch/arm64/kernel/entry-common.c:532
 el0t_64_sync_handler+0xb4/0xf0 arch/arm64/kernel/entry-common.c:660
 el0t_64_sync+0x18c/0x190
Code: d65f03c0 9001b4c0 91279000 94a785f6 (d4210000) 
---[ end trace 0000000000000000 ]---

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-gce-arm64 2022/09/23 17:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci d2cd2931d2fd 0042f2b4 .config log report info BUG: corrupted list in usb_hcd_unlink_urb_from_ep
* Struck through repros no longer work on HEAD.