On Mon, Mar 20, 2017 at 8:17 AM, Takashi Iwai <tiwai@xxxxxxx> wrote: > On Fri, 10 Mar 2017 10:19:13 +0100, > Dmitry Vyukov wrote: >> >> On Sat, Mar 4, 2017 at 5:31 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote: >> > Hello, >> > >> > The following program creates processes deadlocked in snd_seq_pool_done: >> > >> > https://gist.githubusercontent.com/dvyukov/97efc9cb6d63b1b2c7b737b82cc8b0d6/raw/3546b133ae0b2d3e1190ae7c1f4e240ce7ce132e/gistfile1.txt >> > >> > After few seconds I get: >> > >> > # ps afxu | grep a.out >> > root 8660 2.0 0.0 0 0 pts/0 Zl 16:27 0:00 >> > [a.out] <defunct> >> > >> > # kill -9 8660 >> > >> > # cat /proc/8660/status >> > Name: a.out >> > State: Z (zombie) >> > Tgid: 8660 >> > Ngid: 0 >> > Pid: 8660 >> > PPid: 1 >> > TracerPid: 0 >> > Uid: 0 0 0 0 >> > Gid: 0 0 0 0 >> > FDSize: 0 >> > Groups: 0 >> > NStgid: 8660 >> > NSpid: 8660 >> > NSpgid: 8660 >> > NSsid: 2971 >> > Threads: 2 >> > SigQ: 1/3304 >> > SigPnd: 0000000000000000 >> > ShdPnd: 0000000000000100 >> > SigBlk: 0000000000000000 >> > SigIgn: 0000000180000000 >> > SigCgt: 0000000000000440 >> > CapInh: 0000000000000000 >> > CapPrm: 0000003fffffffff >> > CapEff: 0000003fffffffff >> > CapBnd: 0000003fffffffff >> > CapAmb: 0000000000000000 >> > NoNewPrivs: 0 >> > Seccomp: 0 >> > Cpus_allowed: f >> > Cpus_allowed_list: 0-3 >> > Mems_allowed: 00000000,00000001 >> > Mems_allowed_list: 0 >> > voluntary_ctxt_switches: 12 >> > nonvoluntary_ctxt_switches: 0 >> > >> > # cat /proc/8660/task/*/stack >> > [<ffffffff835406db>] snd_seq_pool_done+0x31b/0x620 >> > sound/core/seq/seq_memory.c:436 >> > [<ffffffff8353a11e>] snd_seq_ioctl_set_client_pool+0x1ae/0x600 >> > sound/core/seq/seq_clientmgr.c:1836 >> > [<ffffffff835382ba>] snd_seq_ioctl+0x2da/0x4d0 >> > sound/core/seq/seq_clientmgr.c:2130 >> > [<ffffffff81aced2f>] vfs_ioctl fs/ioctl.c:45 [inline] >> > [<ffffffff81aced2f>] do_vfs_ioctl+0x1bf/0x1790 fs/ioctl.c:685 >> > [<ffffffff81ad038f>] SYSC_ioctl fs/ioctl.c:700 [inline] >> > [<ffffffff81ad038f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 >> > [<ffffffff8457dc41>] entry_SYSCALL_64_fastpath+0x1f/0xc2 >> >> >> A friendly ping. > > Sorry for the delay, I've been on vacation for over the last two > weeks. (And I have a deja vu feeing, as if I so often receive your > syzkaller bug reports during or just before my vacation in the past, > too... :) > > Will take a look at this soon after digesting the pending mails. I swear I don't stack them up to send right before your vacation :) _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
