search for: kthread_freezable_should_stop

...ost_net] [<ffffffffa019541e>] vhost_worker+0xfe/0x1a0 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffff81061f46>] kthread+0xc6/0xd0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/vho...

...ost_net] [<ffffffffa019541e>] vhost_worker+0xfe/0x1a0 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffff81061f46>] kthread+0xc6/0xd0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/vho...

...81475911>] _handle_hotplug_event_func+0x31/0x70 [<ffffffff810b5333>] process_one_work+0x183/0x500 [<ffffffff810b66e2>] worker_thread+0x122/0x400 [<ffffffff810b65c0>] ? manage_workers+0x2d0/0x2d0 [<ffffffff810bc5de>] kthread+0xce/0xe0 [<ffffffff810bc510>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff81ca045c>] ret_from_fork+0x7c/0xb0 [<ffffffff810bc510>] ? kthread_freezable_should_stop+0x70/0x70 Code: 01 00 00 00 74 59 45 31 e4 83 bb c8 01 00 00 02 74 46 66 2e 0f 1f 84 00 00 00 00 00 49 63 c4 48 c1 e0 04 48 8b bc 0 3 10 02 00 00 <48> 8b 47 20 48 8b 80...

...81475911>] _handle_hotplug_event_func+0x31/0x70 [<ffffffff810b5333>] process_one_work+0x183/0x500 [<ffffffff810b66e2>] worker_thread+0x122/0x400 [<ffffffff810b65c0>] ? manage_workers+0x2d0/0x2d0 [<ffffffff810bc5de>] kthread+0xce/0xe0 [<ffffffff810bc510>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff81ca045c>] ret_from_fork+0x7c/0xb0 [<ffffffff810bc510>] ? kthread_freezable_should_stop+0x70/0x70 Code: 01 00 00 00 74 59 45 31 e4 83 bb c8 01 00 00 02 74 46 66 2e 0f 1f 84 00 00 00 00 00 49 63 c4 48 c1 e0 04 48 8b bc 0 3 10 02 00 00 <48> 8b 47 20 48 8b 80...

...vhost_worker+0xfe/0x1a0 [vhost_net] >> [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] >> [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] >> [<ffffffff81061f46>] kthread+0xc6/0xd0 >> [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 >> [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 >> [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 > >> Signed-off-by: Jason Wang <jasowang at redhat.com> >> --- >> drivers/vhost/net.c | 3 ++- >> 1 files change...

...vhost_worker+0xfe/0x1a0 [vhost_net] >> [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] >> [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] >> [<ffffffff81061f46>] kthread+0xc6/0xd0 >> [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 >> [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 >> [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 > >> Signed-off-by: Jason Wang <jasowang at redhat.com> >> --- >> drivers/vhost/net.c | 3 ++- >> 1 files change...

...5e/0x48e [btrfs] Jul 2 21:43:27 bkp010 kernel: [ 696.777917] [<ffffffffa072a9fe>] ? btrfs_queue_worker+0x267/0x267 [btrfs] Jul 2 21:43:27 bkp010 kernel: [ 696.778046] [<ffffffff81048ab2>] kthread+0xb5/0xbd Jul 2 21:43:27 bkp010 kernel: [ 696.778172] [<ffffffff810489fd>] ? kthread_freezable_should_stop+0x43/0x43 Jul 2 21:43:27 bkp010 kernel: [ 696.778294] [<ffffffff8137576c>] ret_from_fork+0x7c/0xb0 Jul 2 21:43:27 bkp010 kernel: [ 696.778401] [<ffffffff810489fd>] ? kthread_freezable_should_stop+0x43/0x43 Jul 2 21:43:27 bkp010 kernel: [ 696.779920] ---[ end trace 5bc755b97545ce...

...fffff811e47e8>] btrfs_commit_transaction+0x45a/0x954 [<ffffffff8105d4be>] ? add_wait_queue+0x44/0x44 [<ffffffff811de8a6>] transaction_kthread+0xe7/0x18a [<ffffffff811de7bf>] ? try_to_freeze+0x33/0x33 [<ffffffff8105cc31>] kthread+0x88/0x90 [<ffffffff8105cba9>] ? kthread_freezable_should_stop+0x39/0x39 [<ffffffff814c6b3c>] ret_from_fork+0x7c/0xb0 [<ffffffff8105cba9>] ? kthread_freezable_should_stop+0x39/0x39 ---[ end trace ee93ff454aca9d81 ]--- -- "A mouse is a device used to point at the xterm you want to type in" - A.S.R. Microsoft is to operating systems ......

...ffa019541e>] vhost_worker+0xfe/0x1a0 [vhost_net] > [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] > [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] > [<ffffffff81061f46>] kthread+0xc6/0xd0 > [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 > [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 > [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 > Signed-off-by: Jason Wang <jasowang at redhat.com> > --- > drivers/vhost/net.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deleti...

...ost_net] [<ffffffffa019541e>] vhost_worker+0xfe/0x1a0 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffff81061f46>] kthread+0xc6/0xd0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 Acked-by: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- The patch is needed for -stable. Changes from v1: -...

...ffa019541e>] vhost_worker+0xfe/0x1a0 [vhost_net] > [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] > [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] > [<ffffffff81061f46>] kthread+0xc6/0xd0 > [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 > [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 > [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 > > Signed-off-by: Jason Wang <jasowang at redhat.com> Good catch. Acked-by: Michael S. Tsirkin <mst at redhat.com> This needs to go into...

...ost_net] [<ffffffffa019541e>] vhost_worker+0xfe/0x1a0 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffffa0195320>] ? vhost_attach_cgroups_work+0x30/0x30 [vhost_net] [<ffffffff81061f46>] kthread+0xc6/0xd0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff817a1aec>] ret_from_fork+0x7c/0xb0 [<ffffffff81061e80>] ? kthread_freezable_should_stop+0x70/0x70 Acked-by: Michael S. Tsirkin <mst at redhat.com> Signed-off-by: Jason Wang <jasowang at redhat.com> --- The patch is needed for -stable. Changes from v1: -...

...thread+0x117/0x150 kernel: [<ffffffff810789e0>] ? wake_up_bit+0x40/0x40 kernel: [<ffffffff8144e4e0>] ? md_rdev_init+0x110/0x110 kernel: [<ffffffff8107828e>] kthread+0xce/0xe0 kernel: [<ffffffff8100382e>] ? xen_end_context_switch+0x1e/0x30 kernel: [<ffffffff810781c0>] ? kthread_freezable_should_stop+0x70/0x70 kernel: [<ffffffff81575cec>] ret_from_fork+0x7c/0xb0 kernel: [<ffffffff810781c0>] ? kthread_freezable_should_stop+0x70/0x70 kernel: Mem-Info: kernel: Node 0 DMA per-cpu: kernel: CPU 0: hi: 0, btch: 1 usd: 0 kernel: CPU 1: hi: 0, btch: 1 usd: 0 kernel: CPU...

...0>] ? finish_task_switch+0x60/0xd0 [<ffffffff81071fe0>] ? wake_up_bit+0x40/0x40 [<ffffffff81544b70>] ? xen_netbk_tx_build_gops+0xa10/0xa10 [<ffffffff81071926>] kthread+0xc6/0xd0 [<ffffffff810037b9>] ? xen_end_context_switch+0x19/0x20 [<ffffffff81071860>] ? kthread_freezable_should_stop+0x70/0x70 [<ffffffff81767c7c>] ret_from_fork+0x7c/0xb0 [<ffffffff81071860>] ? kthread_freezable_should_stop+0x70/0x70 Code: be f5 01 00 00 48 c7 c7 12 e2 99 81 e8 d9 4c c3 ff eb cd 0f 1f 80 00 00 00 00 55 48 89 e5 39 3d c6 fd 80 00 76 0b e8 df fa ff ff <0f> b7 40 1c c9 c3 89...

...worker+0x21c/0x516 [btrfs] [1878432.676645] [<ffffffffa03482cc>] worker_loop+0x15e/0x48e [btrfs] [1878432.676702] [<ffffffffa034816e>] ? btrfs_queue_worker+0x267/0x267 [btrfs] [1878432.676757] [<ffffffff8104e51a>] kthread+0xb5/0xbd [1878432.676809] [<ffffffff8104e465>] ? kthread_freezable_should_stop+0x43/0x43 [1878432.676881] [<ffffffff8137da2c>] ret_from_fork+0x7c/0xb0 [1878432.676950] [<ffffffff8104e465>] ? kthread_freezable_should_stop+0x43/0x43 [1878432.677004] Mem-Info: [1878432.678293] Node 0 DMA per-cpu: [1878432.678341] CPU 0: hi: 0, btch: 1 usd: 0 [1878432.6783...

...rag_inodes+0x20a/0x327 [btrfs] [ 413.409157] [<ffffffffa017a6c1>] cleaner_kthread+0x95/0x122 [btrfs] [ 413.409157] [<ffffffffa017a62c>] ? transaction_kthread+0x1a0/0x1a0 [btrfs] [ 413.409157] [<ffffffff8104da7c>] kthread+0xba/0xc2 [ 413.409157] [<ffffffff8104d9c2>] ? kthread_freezable_should_stop+0x52/0x52 [ 413.409157] [<ffffffff8161fd1c>] ret_from_fork+0x7c/0xb0 [ 413.409157] [<ffffffff8104d9c2>] ? kthread_freezable_should_stop+0x52/0x52 [ 413.409157] fsstress D ffff88007827c308 0 4730 4729 0x00000000 [ 413.409157] ffff88007717fd58 0000000000000082 ffff880...

...ffff810524fb>] ? add_wait_queue+0x3c/0x3c [34736.236009] [<ffffffff810c86bd>] ? balance_pgdat+0x586/0x586 [34736.236009] [<ffffffff81051e9e>] ? kthread+0x7d/0x85 [34736.236009] [<ffffffff8135f924>] ? kernel_thread_helper+0x4/0x10 [34736.236009] [<ffffffff81051e21>] ? kthread_freezable_should_stop+0x3c/0x3c [34736.236009] [<ffffffff8135f920>] ? gs_change+0x13/0x13 [34736.236009] Code: 15 ff ff ff 48 85 c0 49 89 c4 0f 84 8f 00 00 00 4c 8d 2c c5 f8 ff ff ff 48 8b 83 50 01 00 00 49 ff cc 4a 8b 2c 28 48 85 ed 74 67 <48> 8b 7d 08 48 81 c7 88 00 00 00 e8 46 d2 16 e1 48 8b 45 00 f6 [...

Hi all, Did someone have met this problem before. When doing the tests, I hit the WARN_ON. Is this log make sense or someone had fixed the problem. If needed, I can supply the detail log and the testcase source file. Version: the latest codes at linus git tree. [ 2140.981293] use_block_rsv: 336 callbacks suppressed [ 2140.981295] ------------[ cut here ]------------ [ 2140.981308]

...l: [<ffffffff81286224>] ? btrfs_queue_worker+0x261/0x261 Oct 30 22:42:36 localhost kernel: [<ffffffff8104b293>] ? kthread+0x81/0x89 Oct 30 22:42:36 localhost kernel: [<ffffffff815de774>] ? kernel_thread_helper+0x4/0x10 Oct 30 22:42:36 localhost kernel: [<ffffffff8104b212>] ? kthread_freezable_should_stop+0x52/0x52 Oct 30 22:42:36 localhost kernel: [<ffffffff815de770>] ? gs_change+0xb/0xb Oct 30 22:42:36 localhost kernel: ---[ end trace cb2d15ce8c2d83ec ]--- Oct 30 22:42:36 localhost kernel: ------------[ cut here ]------------ -- To unsubscribe from this list: send the line "unsubscribe...

We need an smb_mb() before waitqueue_active to avoid missing wakeups. Before Mitch was hitting a deadlock between the ordered flushers and the transaction commit because the ordered flushers were waiting for more refs and were never woken up, so those smp_mb()''s are the most important. Everything else I added for correctness sake and to avoid getting bitten by this again somewhere else.