On Fri, 2011-10-14 at 22:52 +0000, brian m. carlson wrote: > Package: linux-2.6 > Version: 3.1.0~rc7-1~experimental.1 > Severity: normal > > This morning I was backing up my laptop to another computer via sshfs > (and fuse). The afio archiver was writing to this sshfs-mounted > location. I decided to abort the operation with Ctrl-C, which caused > the sshfs mount to become unmounted; however, afio was apparently not > affected by the SIGINT (probably because processes in disk IO are > unkillable). > > Several hours later, I attempted to suspend my computer and it failed to > do so. The kernel log (attached) indicated that the afio process from > hours before was preventing the suspend. Since processes waiting on > disk IO are unkillable (IMO a bug) and the underlying device to which > afio was writing was long gone, I was forced to reboot the machine in > order to get it to suspend. If I had not noticed that the machine had > failed to suspend, it could have stayed running in my bag and seriously > overheated. This seems to be a bug in FUSE. Is this known about? If not, could someone look into this? Ben. [...] > Oct 14 12:50:07 lakeview kernel: [129960.588174] INFO: task afio:22818 blocked for more than 120 seconds. > Oct 14 12:50:07 lakeview kernel: [129960.588182] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > Oct 14 12:50:07 lakeview kernel: [129960.588188] afio D ffff880086e20300 0 22818 1 0x00000084 > Oct 14 12:50:07 lakeview kernel: [129960.588199] ffff880086e20300 0000000000000086 ffff8800065c1848 ffffffff81037a71 > Oct 14 12:50:07 lakeview kernel: [129960.588210] ffff88003687f120 0000000000012f00 ffff8800001effd8 ffff8800001effd8 > Oct 14 12:50:07 lakeview kernel: [129960.588220] 0000000000012f00 ffff880086e20300 0000000000012f00 0000000000012f00 > Oct 14 12:50:07 lakeview kernel: [129960.588231] Call Trace: > Oct 14 12:50:07 lakeview kernel: [129960.588246] [<ffffffff81037a71>] ? __wake_up_common+0x41/0x78 > Oct 14 12:50:07 lakeview kernel: [129960.588257] [<ffffffff81344bb4>] ? _raw_spin_lock_irqsave+0x9/0x25 > Oct 14 12:50:07 lakeview kernel: [129960.588282] [<ffffffffa0577ab3>] ? fuse_request_send+0x1a2/0x251 [fuse] > Oct 14 12:50:07 lakeview kernel: [129960.588291] [<ffffffff8106288b>] ? wake_up_bit+0x23/0x23 > Oct 14 12:50:07 lakeview kernel: [129960.588316] [<ffffffffa057dd2f>] ? fuse_flush+0xca/0xfe [fuse] > Oct 14 12:50:07 lakeview kernel: [129960.588322] [<ffffffff810fcae7>] ? filp_close+0x3b/0x6a > Oct 14 12:50:07 lakeview kernel: [129960.588326] [<ffffffff810fcb9d>] ? sys_close+0x87/0xc4 > Oct 14 12:50:07 lakeview kernel: [129960.588331] [<ffffffff81349e52>] ? system_call_fastpath+0x16/0x1b [...] -- Ben Hutchings No political challenge can be met by shopping. - George Monbiot
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