linux-kernel - [main-line][PowerPC]selftests/powerpc/signal: sigfuz fails

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Message-ID: <5f88a95b-1c8d-4a74-9753-9cdb2e64daf4@linux.ibm.com>
Date: Mon, 17 Mar 2025 15:16:00 +0530
From: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
To: linuxppc-dev@...ts.ozlabs.org, LKML <linux-kernel@...r.kernel.org>,
        Madhavan Srinivasan <maddy@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>
Subject: [main-line][PowerPC]selftests/powerpc/signal: sigfuz fails

Greetings!!

I am observing selftests/powerpc/signal:sigfuz test fails on linux 
mainline repo on IBM Power10 systems.

The test passes on the kernel with commit head: 
619f0b6fad524f08d493a98d55bac9ab8895e3a6 and fails on the kernel with 
commit head: ce69b4019001407f9cd738dd2ba217b3a8ab831b on the main line.


Repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

I tried to do git bisect and the bisect tool pointed first bad commit 
to: 16ebb6f5b6295c9688749862a39a4889c56227f8.

But upon reverting the first bad commit issue is still seen. So please 
ignore, if the bisection dosent help.


Error:

# selftests: powerpc/signal: sigfuz
# test: signal_fuzzer
# tags: git_version:v6.14-rc7-1-g49c747976afa
# !! killing signal_fuzzer
# !! child died by signal 15
# failure: signal_fuzzer
not ok 3 selftests: powerpc/signal: sigfuz # exit=1


Bisect log:

git bisect start
# status: waiting for both good and bad commits
# good: [619f0b6fad524f08d493a98d55bac9ab8895e3a6] Merge tag 
'seccomp-v6.13-rc8' of 
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
git bisect good 619f0b6fad524f08d493a98d55bac9ab8895e3a6
# status: waiting for bad commit, 1 good commit known
# bad: [ce69b4019001407f9cd738dd2ba217b3a8ab831b] Merge tag 
'net-6.13-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
git bisect bad ce69b4019001407f9cd738dd2ba217b3a8ab831b
# good: [f62bb88782ffc2d8b619ac781ca26582b00c4db6] Merge branch '100GbE' 
of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
git bisect good f62bb88782ffc2d8b619ac781ca26582b00c4db6
# bad: [2c3688090f8a1f085230aa839cc63e4a7b977df0] net/mlx5e: Fix 
inversion dependency warning while enabling IPsec tunnel
git bisect bad 2c3688090f8a1f085230aa839cc63e4a7b977df0
# bad: [d6e3316a1680305da291a5b5deaf424559aaf06c] net: pcs: xpcs: 
actively unset DW_VR_MII_DIG_CTRL1_2G5_EN for 1G SGMII
git bisect bad d6e3316a1680305da291a5b5deaf424559aaf06c
# bad: [f0d0277796db613c124206544b6dbe95b520ab6c] net: netpoll: ensure 
skb_pool list is always initialized
git bisect bad f0d0277796db613c124206544b6dbe95b520ab6c
# bad: [c17ff476f53afb30f90bb3c2af77de069c81a622] net: xilinx: axienet: 
Fix IRQ coalescing packet count overflow
git bisect bad c17ff476f53afb30f90bb3c2af77de069c81a622
# bad: [16ebb6f5b6295c9688749862a39a4889c56227f8] nfp: bpf: prevent 
integer overflow in nfp_bpf_event_output()
git bisect bad 16ebb6f5b6295c9688749862a39a4889c56227f8
# first bad commit: [16ebb6f5b6295c9688749862a39a4889c56227f8] nfp: bpf: 
prevent integer overflow in nfp_bpf_event_output()


If you happen to fix the issue, please add below tag.


Reported-by: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>


Regards,

Venkat.