bisecting fixing commit since c37da90efff5f183bea6ae4c2af33571f61fe317 building syzkaller on abf9ba4fc75d9b29af15625d44dcfc1360fad3b7 testing commit c37da90efff5f183bea6ae4c2af33571f61fe317 with gcc (GCC) 8.1.0 kernel signature: b58cf41added945354fa88503b9b6c37f14918fbe7c50da733917d711e39c244 run #0: crashed: WARNING in snd_pcm_plugin_build_mulaw run #1: crashed: WARNING in corrupted run #2: crashed: WARNING in corrupted run #3: crashed: WARNING in corrupted run #4: crashed: WARNING in snd_pcm_plugin_build_mulaw run #5: crashed: WARNING in corrupted run #6: crashed: WARNING in snd_pcm_plugin_build_mulaw run #7: crashed: WARNING in corrupted run #8: crashed: WARNING in snd_pcm_plugin_build_mulaw run #9: crashed: WARNING in snd_pcm_plugin_build_mulaw testing current HEAD a1b977b49b66c75e6c51a515f6700371ae720217 testing commit a1b977b49b66c75e6c51a515f6700371ae720217 with gcc (GCC) 8.1.0 kernel signature: 2127d0c979894a0d33976584b131b3d87be39efaed41ef0ca1c4268302207526 all runs: OK # git bisect start a1b977b49b66c75e6c51a515f6700371ae720217 c37da90efff5f183bea6ae4c2af33571f61fe317 Bisecting: 273 revisions left to test after this (roughly 8 steps) [7f775c06ee25163a189413b2e5d8a9b3fe2883aa] ASoC: kirkwood: fix IRQ error handling testing commit 7f775c06ee25163a189413b2e5d8a9b3fe2883aa with gcc (GCC) 8.1.0 kernel signature: bea8b0271848991962a217a7451129418479b793b5aca92038c4a8b651438a5e all runs: OK # git bisect bad 7f775c06ee25163a189413b2e5d8a9b3fe2883aa Bisecting: 136 revisions left to test after this (roughly 7 steps) [da2eb70c3ce0fc9ac129d3f67747727f371d6ad8] iio: adc: ti-ads1015: fix conversion when CONFIG_PM is not set testing commit da2eb70c3ce0fc9ac129d3f67747727f371d6ad8 with gcc (GCC) 8.1.0 kernel signature: f109312d1d79d4a91261b3bb1cec7f791e0c0f64810f18a8c45948d566bb6603 all runs: OK # git bisect bad da2eb70c3ce0fc9ac129d3f67747727f371d6ad8 Bisecting: 68 revisions left to test after this (roughly 6 steps) [3319b83f6cc68b709ec43eb90d8617be2d7fa834] ALSA: firewire-digi00x: exclude Avid Adrenaline from detection testing commit 3319b83f6cc68b709ec43eb90d8617be2d7fa834 with gcc (GCC) 8.1.0 kernel signature: 89c65460b160cf736765be9edd476cb96b53a4a0993d847b290fef81b0c2e16a all runs: OK # git bisect bad 3319b83f6cc68b709ec43eb90d8617be2d7fa834 Bisecting: 33 revisions left to test after this (roughly 5 steps) [fd7b07382fff9ff6d090adfa0236d28b6b21402c] bnxt_en: fix HWRM error when querying VF temperature testing commit fd7b07382fff9ff6d090adfa0236d28b6b21402c with gcc (GCC) 8.1.0 kernel signature: 3432ecb9862e77ad2a6669b92145d4caf9202d187c91a5b81b7808368b7a1478 run #0: crashed: WARNING in snd_pcm_plugin_build_mulaw run #1: crashed: WARNING in snd_pcm_plugin_build_mulaw run #2: crashed: WARNING in corrupted run #3: crashed: WARNING in snd_pcm_plugin_build_mulaw run #4: crashed: WARNING in snd_pcm_plugin_build_mulaw run #5: crashed: WARNING in snd_pcm_plugin_build_mulaw run #6: crashed: WARNING in corrupted run #7: crashed: WARNING in corrupted run #8: crashed: WARNING in snd_pcm_plugin_build_mulaw run #9: crashed: WARNING in snd_pcm_plugin_build_mulaw # git bisect good fd7b07382fff9ff6d090adfa0236d28b6b21402c Bisecting: 16 revisions left to test after this (roughly 4 steps) [da0d5ccf845fd5337ce9afaddd46e99859f78502] ext2: don't update mtime on COW faults testing commit da0d5ccf845fd5337ce9afaddd46e99859f78502 with gcc (GCC) 8.1.0 kernel signature: 73f8025ffddd94778a6c16d2cc8405d5941b43bd75d3e01412dc78e9a950872b run #0: crashed: WARNING in snd_pcm_plugin_build_mulaw run #1: crashed: WARNING in corrupted run #2: crashed: WARNING in corrupted run #3: crashed: WARNING in corrupted run #4: crashed: WARNING in snd_pcm_plugin_build_mulaw run #5: crashed: WARNING in corrupted run #6: crashed: WARNING in corrupted run #7: crashed: WARNING in snd_pcm_plugin_build_mulaw run #8: crashed: WARNING in snd_pcm_plugin_build_mulaw run #9: crashed: WARNING in corrupted # git bisect good da0d5ccf845fd5337ce9afaddd46e99859f78502 Bisecting: 8 revisions left to test after this (roughly 3 steps) [4689380be50c038b584933171c2f1dbca90a56be] btrfs: set the lockdep class for log tree extent buffers testing commit 4689380be50c038b584933171c2f1dbca90a56be with gcc (GCC) 8.1.0 kernel signature: 7fc0c069b39a1ab3253a558ced7d10c7f0e6c84ad278007f4bb3445352265720 run #0: crashed: WARNING in corrupted run #1: crashed: WARNING in corrupted run #2: crashed: WARNING in snd_pcm_plugin_build_mulaw run #3: crashed: WARNING in snd_pcm_plugin_build_mulaw run #4: crashed: WARNING in corrupted run #5: crashed: WARNING in snd_pcm_plugin_build_mulaw run #6: crashed: WARNING in snd_pcm_plugin_build_mulaw run #7: crashed: WARNING in snd_pcm_plugin_build_mulaw run #8: crashed: WARNING in snd_pcm_plugin_build_mulaw run #9: crashed: WARNING in snd_pcm_plugin_build_mulaw # git bisect good 4689380be50c038b584933171c2f1dbca90a56be Bisecting: 4 revisions left to test after this (roughly 2 steps) [3d7de9fe191d4a86ba40f7a549bb265e05635f84] net: usb: qmi_wwan: add Telit 0x1050 composition testing commit 3d7de9fe191d4a86ba40f7a549bb265e05635f84 with gcc (GCC) 8.1.0 kernel signature: 2c0e509ef65bc30b0cbc77091ed18ce6d82c0237c97ec7abd30ba002e035828a run #0: crashed: WARNING in corrupted run #1: crashed: WARNING in snd_pcm_plugin_build_mulaw run #2: crashed: WARNING in corrupted run #3: crashed: WARNING in snd_pcm_plugin_build_mulaw run #4: crashed: WARNING in snd_pcm_plugin_build_mulaw run #5: crashed: WARNING in snd_pcm_plugin_build_mulaw run #6: crashed: WARNING in corrupted run #7: crashed: WARNING in snd_pcm_plugin_build_mulaw run #8: crashed: WARNING in snd_pcm_plugin_build_mulaw run #9: crashed: WARNING in snd_pcm_plugin_build_mulaw # git bisect good 3d7de9fe191d4a86ba40f7a549bb265e05635f84 Bisecting: 2 revisions left to test after this (roughly 1 step) [a69e790bce633b69759817cc53d22e0c8ab1c657] ALSA: ca0106: fix error code handling testing commit a69e790bce633b69759817cc53d22e0c8ab1c657 with gcc (GCC) 8.1.0 kernel signature: fa3721e7d8cd5d6b768cfe3656fd4e3f67a6bd879b685f3e43ff8846a5a56dfe run #0: crashed: WARNING in snd_pcm_plugin_build_mulaw run #1: crashed: WARNING in snd_pcm_plugin_build_mulaw run #2: crashed: WARNING in snd_pcm_plugin_build_mulaw run #3: crashed: WARNING in corrupted run #4: crashed: WARNING in snd_pcm_plugin_build_mulaw run #5: crashed: WARNING in snd_pcm_plugin_build_mulaw run #6: crashed: WARNING in snd_pcm_plugin_build_mulaw run #7: crashed: WARNING in snd_pcm_plugin_build_mulaw run #8: crashed: WARNING in snd_pcm_plugin_build_mulaw run #9: crashed: WARNING in corrupted # git bisect good a69e790bce633b69759817cc53d22e0c8ab1c657 Bisecting: 0 revisions left to test after this (roughly 1 step) [374843e4df7503ad71fd9db89df1a964958a9607] ALSA: hda/hdmi: always check pin power status in i915 pin fixup testing commit 374843e4df7503ad71fd9db89df1a964958a9607 with gcc (GCC) 8.1.0 kernel signature: 71dad80fab680ac061643fd5790a03e55da18398be2eda5b19f2739ac86430e3 all runs: OK # git bisect bad 374843e4df7503ad71fd9db89df1a964958a9607 Bisecting: 0 revisions left to test after this (roughly 0 steps) [569e1b621797a9cdba8369f45fc5612ce1bec323] ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check testing commit 569e1b621797a9cdba8369f45fc5612ce1bec323 with gcc (GCC) 8.1.0 kernel signature: 773fc70ff2f96d0d65773e9dba3e4ed98eea1db5c8fc87c341c98f2c7254b6f8 all runs: OK # git bisect bad 569e1b621797a9cdba8369f45fc5612ce1bec323 569e1b621797a9cdba8369f45fc5612ce1bec323 is the first bad commit commit 569e1b621797a9cdba8369f45fc5612ce1bec323 Author: Takashi Iwai Date: Tue Sep 1 15:18:02 2020 +0200 ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check commit 949a1ebe8cea7b342085cb6a4946b498306b9493 upstream. The PCM OSS mulaw plugin has a check of the format of the counter part whether it's a linear format. The check is with snd_BUG_ON() that emits WARN_ON() when the debug config is set, and it confuses syzkaller as if it were a serious issue. Let's drop snd_BUG_ON() for avoiding that. While we're at it, correct the error code to a more suitable, EINVAL. Reported-by: syzbot+23b22dc2e0b81cbfcc95@syzkaller.appspotmail.com Cc: Link: https://lore.kernel.org/r/20200901131802.18157-1-tiwai@suse.de Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman sound/core/oss/mulaw.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) culprit signature: 773fc70ff2f96d0d65773e9dba3e4ed98eea1db5c8fc87c341c98f2c7254b6f8 parent signature: fa3721e7d8cd5d6b768cfe3656fd4e3f67a6bd879b685f3e43ff8846a5a56dfe revisions tested: 12, total time: 3h37m4.277565972s (build: 1h53m16.715789062s, test: 1h42m9.408227365s) first good commit: 569e1b621797a9cdba8369f45fc5612ce1bec323 ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check recipients (to): ["alsa-devel@alsa-project.org" "gregkh@linuxfoundation.org" "perex@perex.cz" "tiwai@suse.com" "tiwai@suse.de"] recipients (cc): ["gregkh@linuxfoundation.org" "linux-kernel@vger.kernel.org"]