Re: [PATCH 4.14 000/246] 4.14.60-stable review

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On Thu, Aug 02, 2018 at 11:25:17AM -0700, Guenter Roeck wrote:
> On Thu, Aug 02, 2018 at 08:43:25AM -0700, Guenter Roeck wrote:
> > On Wed, Aug 01, 2018 at 06:48:30PM +0200, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 4.14.60 release.
> > > There are 246 patches in this series, all will be posted as a response
> > > to this one.  If anyone has any issues with these being applied, please
> > > let me know.
> > > 
> > > Responses should be made by Fri Aug  3 16:49:18 UTC 2018.
> > > Anything received after that time might be too late.
> > > 
> > 
> > Build results:
> > 	total: 148 pass: 148 fail: 0
> > Qemu test results:
> > 	total: 198 pass: 198 fail: 0
> > 
> > Details are available at http://kerneltests.org/builders/.
> > 
> 
> I spoke too early. parisc images crash after adding some configuration
> options. I don't see the crash with v4.14.59. I'll send another update
> later after figuring out what is going on.
> 

The patch causing the problem is commit 27608f359da88eaf ("fasync: Fix deadlock
between task-context and interrupt-context kill_fasync()"), see bisect log
below.

Kernel log message is as follows.

PDC_CHASSIS: Fault (1), CHASSIS  0
Backtrace:
 [<10267738>] dput.part.5+0x1dc/0x1f0
 [<1026776c>] dput+0x20/0x30
 [<1024f79c>] __fput+0x14c/0x230
 [<1024f8e4>] ____fput+0x18/0x28
 [<1019abe0>] task_work_run+0xa4/0xd8
 [<1016d044>] do_notify_resume+0x7c/0x84
 [<1015c258>] syscall_do_signal+0x50/0x9c

The problem only affects v4.14.60-rc1; all other stable releases and release
candidates are fine.

Guenter

---
# bad: [68285958fc2aaa2d85f795151e1c302d7991f1b5] Linux 4.14.60-rc1
# good: [53208e12faa5b8c6eac4eb1d23d6e3fae450fc5a] Linux 4.14.59
git bisect start 'HEAD' 'v4.14.59'
# good: [77d10fced99b2dc0a8067102073005c44e71f964] rtc: vr41xx: fix possible race condition
git bisect good 77d10fced99b2dc0a8067102073005c44e71f964
# bad: [ae308d8e99f6549bd14fc3c639f53966a49cd260] nvme: lightnvm: add granby support
git bisect bad ae308d8e99f6549bd14fc3c639f53966a49cd260
# good: [ee78ecab4e4f0db3f8dbef8369a90da02a89e07f] media: saa7164: Fix driver name in debug output
git bisect good ee78ecab4e4f0db3f8dbef8369a90da02a89e07f
# good: [7e4011cb50b422efaa08e2ad1c009e73b59403ad] f2fs: avoid fsync() failure caused by EAGAIN in writepage()
git bisect good 7e4011cb50b422efaa08e2ad1c009e73b59403ad
# good: [bca093b5dd86a25b8b81ba8a54e60ee6db095f15] net: hns3: Fixes the out of bounds access in hclge_map_tqp
git bisect good bca093b5dd86a25b8b81ba8a54e60ee6db095f15
# bad: [539f19edd347359502e4b6ce9ce793183e0e0a18] stop_machine: Use raw spinlocks
git bisect bad 539f19edd347359502e4b6ce9ce793183e0e0a18
# bad: [27608f359da88eafd5e344fb7ef1aeea9052bbae] fasync: Fix deadlock between task-context and interrupt-context kill_fasync()
git bisect bad 27608f359da88eafd5e344fb7ef1aeea9052bbae
# good: [73b68f3851b934de3cd2e01d6039d9dff4cf74e5] dt-bindings: net: meson-dwmac: new compatible name for AXG SoC
git bisect good 73b68f3851b934de3cd2e01d6039d9dff4cf74e5
# first bad commit: [27608f359da88eafd5e344fb7ef1aeea9052bbae] fasync: Fix deadlock between task-context and interrupt-context kill_fasync()




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