bisecting cause commit starting from dff9f829e5b0181d4ed9d35aa62d695292399b54
building syzkaller on abf9ba4fc75d9b29af15625d44dcfc1360fad3b7
testing commit dff9f829e5b0181d4ed9d35aa62d695292399b54 with gcc (GCC) 8.1.0
kernel signature: 83eec32d01273b68105e64b0163a2e241ebd1f284c85ad4dfb343f014ab7535b
all runs: crashed: INFO: task hung in io_sq_thread_stop
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0
kernel signature: 50248fe24cfd2cadba5f8ff50e9de638883fa4ed2c210731c0b9512dfb3833aa
run #0: OK
run #1: OK
run #2: boot failed: can't ssh into the instance
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: OK
# git bisect start dff9f829e5b0181d4ed9d35aa62d695292399b54 bcf876870b95592b52519ed4aafcf9d95999bc9c
Bisecting: 10341 revisions left to test after this (roughly 13 steps)
[60e76bb8a4e4c5398ea9053535e1fd0c9d6bb06e] Merge tag 'm68knommu-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
testing commit 60e76bb8a4e4c5398ea9053535e1fd0c9d6bb06e with gcc (GCC) 8.1.0
kernel signature: af884bf2dfe6083f5d2b2aaf415ad4f739bc59db0932fa8b6d4cb07a16ca5a48
all runs: OK
# git bisect good 60e76bb8a4e4c5398ea9053535e1fd0c9d6bb06e
Bisecting: 5167 revisions left to test after this (roughly 12 steps)
[527df692cfab7997f5ae751230b4d9460aea3886] Merge remote-tracking branch 'reset/reset/next' into master
testing commit 527df692cfab7997f5ae751230b4d9460aea3886 with gcc (GCC) 8.1.0
kernel signature: 6b617ad6d005b205e913da39169af792391b194b9dc59a8e857c78c8efbaca4a
all runs: OK
# git bisect good 527df692cfab7997f5ae751230b4d9460aea3886
Bisecting: 2718 revisions left to test after this (roughly 11 steps)
[361c081229eab84ba908ea588640a938a3241c51] Merge remote-tracking branch 'drm/drm-next' into master
testing commit 361c081229eab84ba908ea588640a938a3241c51 with gcc (GCC) 8.1.0
kernel signature: 117350fb56ba169750c5fb48be2f7297823b0a3b3e03c744429a4b427e17fd41
all runs: OK
# git bisect good 361c081229eab84ba908ea588640a938a3241c51
Bisecting: 1294 revisions left to test after this (roughly 10 steps)
[d495341ab2349464465fb0f10fa2afe66a85ccd1] Merge remote-tracking branch 'tip/auto-latest' into master
testing commit d495341ab2349464465fb0f10fa2afe66a85ccd1 with gcc (GCC) 8.1.0
kernel signature: c97e4a875132c4d951f7633a281c84ae74045bb14742b417a923e989c377490a
all runs: crashed: INFO: task hung in io_sq_thread_stop
# git bisect bad d495341ab2349464465fb0f10fa2afe66a85ccd1
Bisecting: 602 revisions left to test after this (roughly 10 steps)
[b2116983c2c5cbcb14bdbae2509cfe9b0c6efce1] Merge remote-tracking branch 'sound-asoc/for-next' into master
testing commit b2116983c2c5cbcb14bdbae2509cfe9b0c6efce1 with gcc (GCC) 8.1.0
kernel signature: 3e640d2aaf1e1c64af39439bd5523e4d5e7a150d80537925b3db23db593aafdf
all runs: OK
# git bisect good b2116983c2c5cbcb14bdbae2509cfe9b0c6efce1
Bisecting: 308 revisions left to test after this (roughly 8 steps)
[ebb8a0cbdc21217d8e06b4c638c575bbf5d2bfc1] Merge remote-tracking branch 'safesetid/safesetid-next' into master
testing commit ebb8a0cbdc21217d8e06b4c638c575bbf5d2bfc1 with gcc (GCC) 8.1.0
kernel signature: 2d9e319990139b216cae9834f4512155cae356b8af599de27f308006a19bd5df
all runs: crashed: INFO: task hung in io_sq_thread_stop
# git bisect bad ebb8a0cbdc21217d8e06b4c638c575bbf5d2bfc1
Bisecting: 179 revisions left to test after this (roughly 7 steps)
[175e5699b74ea1d25e167da8a5f297d2f86dbd25] Merge remote-tracking branch 'block/for-next' into master
testing commit 175e5699b74ea1d25e167da8a5f297d2f86dbd25 with gcc (GCC) 8.1.0
kernel signature: 8d73b9bf54121c2298126705d0c6ce6323721ad76d61538b21d13d403e28c5cc
all runs: crashed: INFO: task hung in io_sq_thread_stop
# git bisect bad 175e5699b74ea1d25e167da8a5f297d2f86dbd25
Bisecting: 56 revisions left to test after this (roughly 6 steps)
[659e56ba864d37b7ee0a49cd432205b2a5ca815e] block: add a new revalidate_disk_size helper
testing commit 659e56ba864d37b7ee0a49cd432205b2a5ca815e with gcc (GCC) 8.1.0
kernel signature: 37f7d94bd4ef93bed2b56d0a2720d9a57ae3c58effedb25ab9185f8fc5258523
all runs: OK
# git bisect good 659e56ba864d37b7ee0a49cd432205b2a5ca815e
Bisecting: 29 revisions left to test after this (roughly 5 steps)
[9c2446cffaf55da88e7a9a7c0a5aeb02a9eba2c0] io_uring: get rid of req->io/io_async_ctx union
testing commit 9c2446cffaf55da88e7a9a7c0a5aeb02a9eba2c0 with gcc (GCC) 8.1.0
kernel signature: 906dda99e5120c39b9ebe8ffb81dd2b2255d99360890cee2cbe1e9374652e049
all runs: crashed: INFO: task hung in io_sq_thread_stop
# git bisect bad 9c2446cffaf55da88e7a9a7c0a5aeb02a9eba2c0
Bisecting: 13 revisions left to test after this (roughly 4 steps)
[01c88257dc2a93106b31c2bfc6cec5e7840c87b8] io_uring: base SQPOLL handling off io_sq_data
testing commit 01c88257dc2a93106b31c2bfc6cec5e7840c87b8 with gcc (GCC) 8.1.0
kernel signature: 397d4b9188374cbb89297e198ebcfa93c825c1500cebd91368dfa8a044edd5c4
all runs: crashed: INFO: task hung in io_sq_thread_stop
# git bisect bad 01c88257dc2a93106b31c2bfc6cec5e7840c87b8
Bisecting: 6 revisions left to test after this (roughly 3 steps)
[e54c92fb496b554ee545e79394e96f2fba43049e] io_uring: allow non-fixed files with SQPOLL
testing commit e54c92fb496b554ee545e79394e96f2fba43049e with gcc (GCC) 8.1.0
kernel signature: 6cf038b4dc8e276e7981675b3f79a45858c35692fda9993a811c36a2e8ad3277
all runs: crashed: INFO: task hung in io_finish_async
# git bisect bad e54c92fb496b554ee545e79394e96f2fba43049e
Bisecting: 2 revisions left to test after this (roughly 2 steps)
[d730b1a294323d03f7f6fa4fa69abdc0b1878756] io_uring: add IOURING_REGISTER_RESTRICTIONS opcode
testing commit d730b1a294323d03f7f6fa4fa69abdc0b1878756 with gcc (GCC) 8.1.0
kernel signature: bf966ac7af8267cffdee004606591ca0cef6ebe4fde10f9ecae6e863ea37454b
failed: failed to create VM pool: failed to create GCE image: create image operation failed: &{Code:INTERNAL_ERROR Location: Message:Internal error. Please try again or contact Google Support. (Code: '-951270813895940137') ForceSendFields:[] NullFields:[]}.
# git bisect skip d730b1a294323d03f7f6fa4fa69abdc0b1878756
Bisecting: 2 revisions left to test after this (roughly 2 steps)
[7ec3d1dd937841513081c74dd97eb8e8d7764c87] io_uring: allow disabling rings during the creation
testing commit 7ec3d1dd937841513081c74dd97eb8e8d7764c87 with gcc (GCC) 8.1.0
kernel signature: 9049d9cc44982020b198e3de94ede6a4b5c8b21b7806ea3acc48c9594f3d4d04
all runs: crashed: INFO: task hung in io_finish_async
# git bisect bad 7ec3d1dd937841513081c74dd97eb8e8d7764c87
Bisecting: 1 revision left to test after this (roughly 1 step)
[25815d8a181ace20afa8f5bc94f2d4236105c8a6] io_uring: use an enumeration for io_uring_register(2) opcodes
testing commit 25815d8a181ace20afa8f5bc94f2d4236105c8a6 with gcc (GCC) 8.1.0
kernel signature: b291427cc45b2812d6ef779651e7a158c7ceb6cf64313b5efff8a8f4998c27c2
all runs: OK
# git bisect good 25815d8a181ace20afa8f5bc94f2d4236105c8a6
There are only 'skip'ped commits left to test.
The first bad commit could be any of:
d730b1a294323d03f7f6fa4fa69abdc0b1878756
7ec3d1dd937841513081c74dd97eb8e8d7764c87
We cannot bisect more!
revisions tested: 16, total time: 3h30m37.962781136s (build: 1h24m9.164247451s, test: 2h4m0.565493968s)
bisection is inconclusive, the first bad commit could be any of:
d730b1a294323d03f7f6fa4fa69abdc0b1878756
7ec3d1dd937841513081c74dd97eb8e8d7764c87