Hello RT-list!
I'm pleased to announce the 4.4.225-rt198 stable release.
This release is just an update to the new stable 4.4.215 version
and no RT specific changes have been made.
Known issues:
sigwaittest with hackbench as workload is able to trigger a crash on x86_64,
the same as reported for the v4.4.220-rt196 release.
BUG: unable to handle kernel paging request at 00000000ffffffff
IP: [<ffffffff81190003>] kmem_cache_alloc_node+0xc3/0x1e0
PGD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5215 Comm: hackbench Not tainted 4.4.225-rt197+ #6
Hardware name: wortmann G31M-ES2L/G31M-S2L, BIOS F10 09/29/2009
task: ffff8800c2fb4f80 ti: ffff8800c2a04000 task.ti: ffff8800c2a04000
RIP: 0010:[<ffffffff81190003>] [<ffffffff81190003>] kmem_cache_alloc_node+0xc3/0x1e0
RSP: 0018:ffff8800c2a07bd8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000006551900
RDX: 00000000065518c0 RSI: 00000000065518c0 RDI: 00000000000186e0
RBP: ffff8800c2a07c18 R08: ffffffff8172b71b R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: ffff88012b001700
R13: 00000000ffffffff R14: 00000000ffffffff R15: 00000000024004c0
FS: 00007f94bc703740(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ffffffff CR3: 00000000c2f90000 CR4: 0000000000040670
Stack:
ffffea0004a24a80 ffffea000323f940 ffffffff8172b71b 0000000000000001
ffff8800c2a07d00 ffff88012b001700 0000000000000000 00000000024004c0
ffff8800c2a07c60 ffffffff8172b71b ffffffff024200ca ffff8800c2a08000
Call Trace:
[<ffffffff8172b71b>] ? __alloc_skb+0x4b/0x1c0
[<ffffffff8172b71b>] __alloc_skb+0x4b/0x1c0
[<ffffffff8172b8ee>] alloc_skb_with_frags+0x5e/0x1d0
[<ffffffff8172738d>] sock_alloc_send_pskb+0x1bd/0x1e0
[<ffffffff81806804>] unix_stream_sendmsg+0x244/0x390
[<ffffffff81723090>] sock_sendmsg+0x40/0x50
[<ffffffff8172311f>] sock_write_iter+0x7f/0xd0
[<ffffffff8119a1d8>] __vfs_write+0xb8/0xf0
[<ffffffff8119acaa>] vfs_write+0xba/0x1d0
[<ffffffff8119b93f>] SyS_write+0x4f/0xd0
[<ffffffff8193024a>] entry_SYSCALL_64_fastpath+0x1e/0x93
Code: 00 00 74 51 48 85 c0 0f 84 2c 01 00 00 49 63 54 24 1c 31 f6 4c 89 ef e8 cc d0 1e 00 eb 37 49 63 44 24 20 49 8b 3c 24 48 8d 4a 40 <49> 8b 5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 0f 84 64
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
branch: v4.4-rt
Head SHA1: fa195796a1c5385a6e6b41c343b861067770f9c7
Or to build 4.4.225-rt198 directly, the following patches should be applied:
https://www.kernel.org/pub/linux/kernel/v4.x/linux-4.4.tar.xz
https://www.kernel.org/pub/linux/kernel/v4.x/patch-4.4.225.xz
https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patch-4.4.225-rt198.patch.xz
You can also build from 4.4.220-rt197 by applying the incremental patch:
https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/incr/patch-4.4.220-rt197-rt198.patch.xz
Enjoy!
Daniel
