bisecting fixing commit since 7ae77150d94d3b535c7b85e6b3647113095e79bf building syzkaller on e6b89e4e5adde15c0dc0a241e03dc215f2e249b3 testing commit 7ae77150d94d3b535c7b85e6b3647113095e79bf with gcc (GCC) 8.1.0 kernel signature: b6016e17ac6eeda78ae5cbeac6c09a330e9c30a3bf1fed7dc0e068d8cf853693 run #0: crashed: INFO: task hung in pipe_write run #1: crashed: INFO: task hung in pipe_write run #2: crashed: INFO: task hung in pipe_write run #3: crashed: INFO: task hung in pipe_read run #4: crashed: INFO: task hung in vfs_unlink run #5: crashed: INFO: task hung in pipe_write run #6: crashed: INFO: task hung in pipe_write run #7: crashed: INFO: task hung in pipe_write run #8: crashed: INFO: task hung in pipe_write run #9: OK testing current HEAD 71c061d2443814de15e177489d5cc00a4a253ef3 testing commit 71c061d2443814de15e177489d5cc00a4a253ef3 with gcc (GCC) 8.1.0 kernel signature: 2db31896efbfb6937bf8861caff4a1a79be7fcfd903ac6c1d81ef7a43055ce60 all runs: OK # git bisect start 71c061d2443814de15e177489d5cc00a4a253ef3 7ae77150d94d3b535c7b85e6b3647113095e79bf Bisecting: 27215 revisions left to test after this (roughly 15 steps) [7fafb54c7d390e9b273a1d7d377e38d9c408046e] Merge tag 'leds-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds testing commit 7fafb54c7d390e9b273a1d7d377e38d9c408046e with gcc (GCC) 8.1.0 kernel signature: af5a6a8041c4d5ee763626902ee877a17bff23e4d19085ae4d9c9bf147840fcf run #0: crashed: BUG: using __this_cpu_read() in preemptible code in trace_hardirqs_on run #1: crashed: INFO: task hung in pipe_write run #2: crashed: INFO: task hung in pipe_write run #3: crashed: INFO: task hung in pipe_read run #4: crashed: INFO: task hung in pipe_read run #5: crashed: INFO: task hung in pipe_write run #6: crashed: INFO: task hung in pipe_write run #7: OK run #8: OK run #9: OK # git bisect good 7fafb54c7d390e9b273a1d7d377e38d9c408046e Bisecting: 13607 revisions left to test after this (roughly 14 steps) [60c102eedea0e487c897dd23cc7fefecf4449769] tipc: refactor tipc_sk_bind() function testing commit 60c102eedea0e487c897dd23cc7fefecf4449769 with gcc (GCC) 8.1.0 kernel signature: 98a754eac6b6625c8406f2fb2583c103dc634a3d65f6eeeaca8ac553fa0193cf run #0: crashed: INFO: task hung in pipe_write run #1: crashed: INFO: task hung in pipe_write run #2: crashed: INFO: task hung in pipe_write run #3: crashed: INFO: task hung in pipe_write run #4: crashed: INFO: task hung in pipe_write run #5: crashed: INFO: task hung in pipe_read run #6: crashed: INFO: task hung in pipe_write run #7: OK run #8: OK run #9: OK # git bisect good 60c102eedea0e487c897dd23cc7fefecf4449769 Bisecting: 6875 revisions left to test after this (roughly 13 steps) [2911ed9f47b47cb5ab87d03314b3b9fe008e607f] Merge tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc testing commit 2911ed9f47b47cb5ab87d03314b3b9fe008e607f with gcc (GCC) 8.1.0 kernel signature: b2d6632b8a23d902f7e3132e0b2bde80e124234f153f3af5be886a53a3ef3224 all runs: OK # git bisect bad 2911ed9f47b47cb5ab87d03314b3b9fe008e607f Bisecting: 3369 revisions left to test after this (roughly 12 steps) [da0628559871475b482f015dc24c9bef372936e4] Merge tag 'tomoyo-pr-20201214' of git://git.osdn.net/gitroot/tomoyo/tomoyo-test1 testing commit da0628559871475b482f015dc24c9bef372936e4 with gcc (GCC) 8.1.0 kernel signature: 819e569b4a6b8bd0f9f4e2e7ab9b60b35d608106d49d7e28809091f84b03f213 run #0: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #2: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #3: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #4: crashed: INFO: task hung in pipe_write run #5: crashed: INFO: task hung in pipe_write run #6: crashed: INFO: task hung in pipe_read run #7: crashed: INFO: task hung in pipe_write run #8: crashed: INFO: task hung in pipe_read run #9: crashed: INFO: task hung in pipe_write # git bisect good da0628559871475b482f015dc24c9bef372936e4 Bisecting: 1129 revisions left to test after this (roughly 11 steps) [d635a69dd4981cc51f90293f5f64268620ed1565] Merge tag 'net-next-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next testing commit d635a69dd4981cc51f90293f5f64268620ed1565 with gcc (GCC) 8.1.0 kernel signature: 21c5ee264b05852222c2974bdbb617dff034d14a4c32805cec0cf93e550391c8 all runs: OK # git bisect bad d635a69dd4981cc51f90293f5f64268620ed1565 Bisecting: 1118 revisions left to test after this (roughly 10 steps) [ac73e3dc8acd0a3be292755db30388c3580f5674] Merge branch 'akpm' (patches from Andrew) testing commit ac73e3dc8acd0a3be292755db30388c3580f5674 with gcc (GCC) 8.1.0 kernel signature: 6ed649435467dec7ef4470a84a6821fd8344f0979d69dda828d54e0b9c448c07 all runs: OK # git bisect bad ac73e3dc8acd0a3be292755db30388c3580f5674 Bisecting: 567 revisions left to test after this (roughly 9 steps) [ff6135959a9150ad45cb92ca38da270903a74343] Merge tag 'docs-5.11' of git://git.lwn.net/linux testing commit ff6135959a9150ad45cb92ca38da270903a74343 with gcc (GCC) 8.1.0 kernel signature: 0eab0b5e6897d4b2c4ac29c45940215b0cae59f346dea45b6a7d8aa768065412 run #0: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #2: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #3: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #4: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #5: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #6: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #7: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #8: crashed: INFO: task hung in pipe_write run #9: crashed: INFO: task hung in pipe_write # git bisect good ff6135959a9150ad45cb92ca38da270903a74343 Bisecting: 281 revisions left to test after this (roughly 8 steps) [adb35e8dc98ba9bda99ff79ac6a05b8fcde2a762] Merge tag 'sched-core-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit adb35e8dc98ba9bda99ff79ac6a05b8fcde2a762 with gcc (GCC) 8.1.0 kernel signature: d1836362d8bead4098e718bca021db2b177646833564ef34e4e38eab207e63f0 run #0: crashed: INFO: task hung in pipe_write run #1: crashed: INFO: task hung in pipe_read run #2: crashed: INFO: task hung in pipe_write run #3: crashed: INFO: task hung in pipe_write run #4: crashed: INFO: task hung in pipe_read run #5: crashed: INFO: task hung in pipe_write run #6: crashed: INFO: task hung in pipe_write run #7: crashed: INFO: task hung in pipe_write run #8: crashed: INFO: task hung in pipe_write run #9: crashed: INFO: task hung in pipe_write # git bisect good adb35e8dc98ba9bda99ff79ac6a05b8fcde2a762 Bisecting: 140 revisions left to test after this (roughly 7 steps) [8295d535e2aa198bdf65a4045d622df38955ffe2] mm,hwpoison: refactor get_any_page testing commit 8295d535e2aa198bdf65a4045d622df38955ffe2 with gcc (GCC) 8.1.0 kernel signature: 7c2a8354cdf23017d50ff9cae79f9b5c5512fa83a84664612bbc4ab3c973b26b run #0: crashed: INFO: task hung in pipe_write run #1: crashed: INFO: task hung in vfs_unlink run #2: crashed: INFO: task hung in pipe_write run #3: crashed: INFO: task hung in pipe_write run #4: crashed: INFO: task hung in pipe_write run #5: crashed: INFO: task hung in pipe_write run #6: crashed: INFO: task hung in pipe_write run #7: crashed: INFO: task hung in pipe_write run #8: crashed: INFO: task hung in pipe_read run #9: OK # git bisect good 8295d535e2aa198bdf65a4045d622df38955ffe2 Bisecting: 59 revisions left to test after this (roughly 6 steps) [148842c98a24e508aecb929718818fbf4c2a6ff3] Merge tag 'x86-apic-2020-12-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 148842c98a24e508aecb929718818fbf4c2a6ff3 with gcc (GCC) 8.1.0 kernel signature: fdb2137b1257dd6572203d6fb43ee10670cb156f955c9b66fc18763567ed4d64 run #0: crashed: INFO: task hung in pipe_read run #1: crashed: INFO: task hung in pipe_write run #2: crashed: INFO: task hung in pipe_write run #3: crashed: INFO: task hung in pipe_write run #4: crashed: INFO: task hung in pipe_read run #5: crashed: INFO: task hung in pipe_write run #6: crashed: INFO: task hung in pipe_write run #7: OK run #8: crashed: INFO: task hung in pipe_write run #9: OK # git bisect good 148842c98a24e508aecb929718818fbf4c2a6ff3 Bisecting: 29 revisions left to test after this (roughly 5 steps) [d85c6db4cc61bd8299f68534bf7ea2f717f49539] mm: migrate: remove unused parameter in migrate_vma_insert_page() testing commit d85c6db4cc61bd8299f68534bf7ea2f717f49539 with gcc (GCC) 8.1.0 kernel signature: 4147318114dac25fb822ffd01446b47161a01d89240c29c70f6389cb9007b74b run #0: crashed: INFO: task hung in pipe_write run #1: crashed: INFO: task hung in pipe_read run #2: crashed: INFO: task hung in pipe_read run #3: crashed: INFO: task hung in pipe_write run #4: crashed: INFO: task hung in pipe_write run #5: crashed: INFO: task hung in pipe_write run #6: crashed: INFO: task hung in pipe_write run #7: crashed: INFO: task hung in pipe_write run #8: crashed: INFO: task hung in pipe_write run #9: OK # git bisect good d85c6db4cc61bd8299f68534bf7ea2f717f49539 Bisecting: 14 revisions left to test after this (roughly 4 steps) [42a44704367cd18d069c9855cb84090ff90ecd86] mm/zswap: fix passing zero to 'PTR_ERR' warning testing commit 42a44704367cd18d069c9855cb84090ff90ecd86 with gcc (GCC) 8.1.0 kernel signature: bdc5b8bcd5bcd9488a84e3b04c36951f6c6f44451aa0711461f202e963c4a7e5 run #0: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #2: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #3: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #4: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #5: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #6: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #7: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #8: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #9: OK # git bisect skip 42a44704367cd18d069c9855cb84090ff90ecd86 Bisecting: 14 revisions left to test after this (roughly 4 steps) [01359eb2013b4b1e87b22db0f532c2e0b7aee001] mm: fix fall-through warnings for Clang testing commit 01359eb2013b4b1e87b22db0f532c2e0b7aee001 with gcc (GCC) 8.1.0 kernel signature: d7695e17198355bed067c1715ba5f108fcc05651211b22746a56cd7f54dc124c run #0: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #1: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #2: boot failed: create image operation failed: &{Code:ZONE_RESOURCE_POOL_EXHAUSTED_WITH_DETAILS Location: Message:The zone 'projects/syzkaller/zones/us-central1-c' does not have enough resources available to fulfill the request. '(resource type:compute)'. ForceSendFields:[] NullFields:[]}. run #3: crashed: WARNING: ODEBUG bug in netdev_run_todo run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK reproducer seems to be flaky # git bisect good 01359eb2013b4b1e87b22db0f532c2e0b7aee001 Bisecting: 0 revisions left to test after this (roughly 0 steps) [dfefd226b0bf7c435a58d75a0ce2f9273b9825f6] mm: cleanup kstrto*() usage testing commit dfefd226b0bf7c435a58d75a0ce2f9273b9825f6 with gcc (GCC) 8.1.0 kernel signature: b8f72c53f5ca6af41829099ab680ecbc82ece7cbe53f94390e0fbba722a6d5d6 all runs: OK # git bisect bad dfefd226b0bf7c435a58d75a0ce2f9273b9825f6 dfefd226b0bf7c435a58d75a0ce2f9273b9825f6 is the first bad commit commit dfefd226b0bf7c435a58d75a0ce2f9273b9825f6 Author: Alexey Dobriyan Date: Mon Dec 14 19:15:03 2020 -0800 mm: cleanup kstrto*() usage Range checks can folded into proper conversion function. kstrto*() exist for all arithmetic types. Link: https://lkml.kernel.org/r/20201122123759.GC92364@localhost.localdomain Signed-off-by: Alexey Dobriyan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds mm/khugepaged.c | 18 +++++++++--------- mm/ksm.c | 18 +++++++++--------- 2 files changed, 18 insertions(+), 18 deletions(-) culprit signature: b8f72c53f5ca6af41829099ab680ecbc82ece7cbe53f94390e0fbba722a6d5d6 parent signature: d7695e17198355bed067c1715ba5f108fcc05651211b22746a56cd7f54dc124c Reproducer flagged being flaky revisions tested: 16, total time: 4h5m26.531008054s (build: 1h21m20.012607928s, test: 2h42m3.930183433s) first good commit: dfefd226b0bf7c435a58d75a0ce2f9273b9825f6 mm: cleanup kstrto*() usage recipients (to): ["adobriyan@gmail.com" "akpm@linux-foundation.org" "torvalds@linux-foundation.org"] recipients (cc): []