On Thu, Jun 20, 2024 at 10:13:24AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 2ccbdf43d5e7 Merge tag 'for-linus' of git://git.kernel.org.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=10341146980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=fa0ce06dcc735711 > dashboard link: https://syzkaller.appspot.com/bug?extid=696cffe71c444e4a2dd8 > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13e8bfee980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12d3d851980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/93525a95fe83/disk-2ccbdf43.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/b9b895227ea2/vmlinux-2ccbdf43.xz > kernel image: https://storage.googleapis.com/syzbot-assets/e825248a8e73/bzImage-2ccbdf43.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+696cffe71c444e4a2dd8@xxxxxxxxxxxxxxxxxxxxxxxxx > > rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P45 > 1-.... > } 2688 jiffies s: 1349 root: 0x2/T > rcu: blocking rcu_node structures (internal RCU debug): > > Sending NMI from CPU 0 to CPUs 1: > cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes > cdc_wdm 3-1:1.0: nonzero urb status received: -71 > cdc_wdm 3-1:1.0: wdm_int_callback - 0 bytes > cdc_wdm 3-1:1.0: nonzero urb status received: -71 #syz dup: [syzbot] [usb?] INFO: rcu detected stall in raw_ioctl Alan Stern
