bisecting cause commit starting from 06a81c1c7db9bd5de0bd38cd5acc44bb22b99150
building syzkaller on 70301872e129e968c3027d181efb25fce3de8707
testing commit 06a81c1c7db9bd5de0bd38cd5acc44bb22b99150 with gcc (GCC) 8.1.0
kernel signature: 1d9a9cd0358d4998eb4373d19848743d1f87bba8ebd6d3df34860e74b2eb57d4
all runs: crashed: possible deadlock in io_queue_linked_timeout
testing release v5.8
testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.1.0
kernel signature: cd53b167ef69cfb75df493966c479fcecd2187a1193c33a6afed36dbc7071fa8
all runs: OK
# git bisect start 06a81c1c7db9bd5de0bd38cd5acc44bb22b99150 bcf876870b95592b52519ed4aafcf9d95999bc9c
Bisecting: 5787 revisions left to test after this (roughly 13 steps)
[8186749621ed6b8fc42644c399e8c755a2b6f630] Merge tag 'drm-next-2020-08-06' of git://anongit.freedesktop.org/drm/drm
testing commit 8186749621ed6b8fc42644c399e8c755a2b6f630 with gcc (GCC) 8.1.0
kernel signature: 126cd13d892c1788c66be9afbb979c26d8f7dffcd4e51383d9d4bf9c0f856a42
all runs: crashed: possible deadlock in io_queue_linked_timeout
# git bisect bad 8186749621ed6b8fc42644c399e8c755a2b6f630
Bisecting: 2954 revisions left to test after this (roughly 12 steps)
[2324d50d051ec0f14a548e78554fb02513d6dcef] Merge tag 'docs-5.9' of git://git.lwn.net/linux
testing commit 2324d50d051ec0f14a548e78554fb02513d6dcef with gcc (GCC) 8.1.0
kernel signature: 0e2a4cc6b8543fcf6a47658a0f92eed0483660dec0e86ccbd57c074a906efbb2
all runs: crashed: possible deadlock in io_queue_linked_timeout
# git bisect bad 2324d50d051ec0f14a548e78554fb02513d6dcef
Bisecting: 1745 revisions left to test after this (roughly 11 steps)
[92c59e126b21fd212195358a0d296e787e444087] Merge tag 'arm-defconfig-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
testing commit 92c59e126b21fd212195358a0d296e787e444087 with gcc (GCC) 8.1.0
kernel signature: 70687491ae5f284675ca97a56508f19894453b760fed19793fa50abd1f8e24d3
all runs: crashed: possible deadlock in io_queue_linked_timeout
# git bisect bad 92c59e126b21fd212195358a0d296e787e444087
Bisecting: 638 revisions left to test after this (roughly 9 steps)
[cdc8fcb49905c0b67e355e027cb462ee168ffaa3] Merge tag 'for-5.9/io_uring-20200802' of git://git.kernel.dk/linux-block
testing commit cdc8fcb49905c0b67e355e027cb462ee168ffaa3 with gcc (GCC) 8.1.0
kernel signature: 5e05d554dcc44a5e159cc41415552e3f315637e133b4d19d33d6a263c4bc80a8
all runs: crashed: possible deadlock in io_queue_linked_timeout
# git bisect bad cdc8fcb49905c0b67e355e027cb462ee168ffaa3
Bisecting: 272 revisions left to test after this (roughly 8 steps)
[ab5c60b79ab6cc50b39bbb21b2f9fb55af900b84] Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
testing commit ab5c60b79ab6cc50b39bbb21b2f9fb55af900b84 with gcc (GCC) 8.1.0
kernel signature: a14f355465cf2c635edd6a13a3932fc96be57ffc203d150790f786c952d4961f
run #0: OK
run #1: OK
run #2: OK
run #3: OK
run #4: OK
run #5: OK
run #6: OK
run #7: OK
run #8: OK
run #9: boot failed: can't ssh into the instance
# git bisect good ab5c60b79ab6cc50b39bbb21b2f9fb55af900b84
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[d958e343bdc3de2643ce25225bed082dc222858d] block: blk-timeout: delete duplicated word
testing commit d958e343bdc3de2643ce25225bed082dc222858d with gcc (GCC) 8.1.0
kernel signature: 1920a1ab521635dce05a66522278bbcb4ec0e87e3edcbcc4da3608db7fa23a77
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip d958e343bdc3de2643ce25225bed082dc222858d
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[8c5462875224a6d81683e733087f501f58fccd4c] block: merge blkg_lookup_create and __blkg_lookup_create
testing commit 8c5462875224a6d81683e733087f501f58fccd4c with gcc (GCC) 8.1.0
kernel signature: 1f83a1af972a18f11b42bef109d9cba6ca64c4ea99ac5cc95fca676476fb91d6
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 8c5462875224a6d81683e733087f501f58fccd4c
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[5af1d13e8f0d8839db04a71ec786f369b0e67234] io_uring: batch put_task_struct()
testing commit 5af1d13e8f0d8839db04a71ec786f369b0e67234 with gcc (GCC) 8.1.0
kernel signature: 0f1c7459fd35b733495921bc9ee263549110473bd2341ada892274f6d88766b9
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 5af1d13e8f0d8839db04a71ec786f369b0e67234
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[9b0d911acce00b67f7e7336f838b732de7d917d6] io_uring: kill REQ_F_LINK_NEXT
testing commit 9b0d911acce00b67f7e7336f838b732de7d917d6 with gcc (GCC) 8.1.0
kernel signature: 3c8473f98420cfa3973296bd50eca8a14ebf93a2b005b33010509856c9929ce0
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 9b0d911acce00b67f7e7336f838b732de7d917d6
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[943c4d9074aa05b86af89eec25330c1995e807c9] block: make blk_timeout_init() static
testing commit 943c4d9074aa05b86af89eec25330c1995e807c9 with gcc (GCC) 8.1.0
kernel signature: dba9bdbadc315d5412ca154f8bc85a89319d97d53f73a2d4b65d464d7cdebb92
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 943c4d9074aa05b86af89eec25330c1995e807c9
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[7c86ffeeed303187f266ed17bd87a9b375955709] io_uring: deduplicate freeing linked timeouts
testing commit 7c86ffeeed303187f266ed17bd87a9b375955709 with gcc (GCC) 8.1.0
kernel signature: db128e2005fa47c810ad6392954fde478dc0637c89a65b0700fddf2d53c9690c
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 7c86ffeeed303187f266ed17bd87a9b375955709
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[b089ed390b5c9bc248a32168709cfa01099caf9d] io-wq: update hash bits
testing commit b089ed390b5c9bc248a32168709cfa01099caf9d with gcc (GCC) 8.1.0
kernel signature: ebaac19786feaee3d7ec4b512f3a5e3ad411cb8cfb488ce2f8e797bddb60c2a7
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip b089ed390b5c9bc248a32168709cfa01099caf9d
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[6e6fcbc27e7788af54139c53537395d95560f2ef] blk-mq: support batching dispatch in case of io
testing commit 6e6fcbc27e7788af54139c53537395d95560f2ef with gcc (GCC) 8.1.0
kernel signature: e181f036ceea882de2c8815d2d2e4c045860ffdf6e09031d513b63ae587c644c
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 6e6fcbc27e7788af54139c53537395d95560f2ef
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[ef45fe470e1e5410db4af87abc5d5055427945ac] blk-cgroup: show global disk stats in root cgroup io.stat
testing commit ef45fe470e1e5410db4af87abc5d5055427945ac with gcc (GCC) 8.1.0
kernel signature: 96286ba701e9e63868dc52a64c6cff16f3f12acebcf4f19c0fd32e2d2f84358f
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip ef45fe470e1e5410db4af87abc5d5055427945ac
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[ab0b6451db2a8ed630b89ef3826b8ea994149444] io_uring: clean up io_kill_linked_timeout() locking
testing commit ab0b6451db2a8ed630b89ef3826b8ea994149444 with gcc (GCC) 8.1.0
kernel signature: 63efe21ee21fa8307c895d64cfb28966bb61dcc37bdc2206a8c4e8a73adfa2b6
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip ab0b6451db2a8ed630b89ef3826b8ea994149444
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[0516c2f6ae6570a0c4a081189d71a48cfadc34a7] block: Remove callback typedefs for blk_mq_ops
testing commit 0516c2f6ae6570a0c4a081189d71a48cfadc34a7 with gcc (GCC) 8.1.0
kernel signature: 3304be2cda10255a9568cfa3edcb7290e79316ca18db6ff91894cd1430a45f3f
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 0516c2f6ae6570a0c4a081189d71a48cfadc34a7
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[8eb06d7e8dd853d70668617dda57de4f6cebe651] io_uring: fix missing ->mm on exit
testing commit 8eb06d7e8dd853d70668617dda57de4f6cebe651 with gcc (GCC) 8.1.0
kernel signature: 35f4fa3d7230436151b22980f7ab902c001659f4ed1e0412d2aa69792f3d46fb
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 8eb06d7e8dd853d70668617dda57de4f6cebe651
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[01cec8c18f5ad9c27eee9f21439072832181039e] io_uring: get rid of atomic FAA for cq_timeouts
testing commit 01cec8c18f5ad9c27eee9f21439072832181039e with gcc (GCC) 8.1.0
kernel signature: 78b44d69f842ce3c7d4f274b7b548520e2567424b133416316c26e85ae7513ed
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 01cec8c18f5ad9c27eee9f21439072832181039e
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[6df1db6b542436c6d429caa66e1045862fa36155] io_uring: fix mis-refcounting linked timeouts
testing commit 6df1db6b542436c6d429caa66e1045862fa36155 with gcc (GCC) 8.1.0
kernel signature: 220a9c11c76adf324630bcd9c3e4ac5a3aff0d6eeb4c2a173589638e6619b363
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 6df1db6b542436c6d429caa66e1045862fa36155
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[1752f0adea98ef859978c090e0726844348758f9] fs: optimise kiocb_set_rw_flags()
testing commit 1752f0adea98ef859978c090e0726844348758f9 with gcc (GCC) 8.1.0
kernel signature: 8bac4f21faa5ece9d38ea82b5e2d5020ebfc0a0390995c29f31f65dd922e3438
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 1752f0adea98ef859978c090e0726844348758f9
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[f695ca3886ce72b027af7aa6040cd420cae2088c] block: remove the request_queue argument from blk_queue_split
testing commit f695ca3886ce72b027af7aa6040cd420cae2088c with gcc (GCC) 8.1.0
kernel signature: 7809f2236a4705104ee40f9b93bac4158afd3e6d659adbb30487c9c460aa2b66
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip f695ca3886ce72b027af7aa6040cd420cae2088c
Bisecting: 137 revisions left to test after this (roughly 7 steps)
[382625d0d4325fb14a29444eb8dce8dcc2eb9b51] Merge tag 'for-5.9/block-20200802' of git://git.kernel.dk/linux-block
testing commit 382625d0d4325fb14a29444eb8dce8dcc2eb9b51 with gcc (GCC) 8.1.0
kernel signature: 2d7f020a675aac1a048f2fb0c5fb5e523d5574bc2686f71e5905158e65bd6d15
all runs: OK
# git bisect good 382625d0d4325fb14a29444eb8dce8dcc2eb9b51
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[debb85f496c9cc70663eac31d3ad9153839c844c] io_uring: factor out grab_env() from defer_prep()
testing commit debb85f496c9cc70663eac31d3ad9153839c844c with gcc (GCC) 8.1.0
kernel signature: abf0e2bf79375ff03a21ef32ae92745daeff3e365476fc2dfc6372beba4ab3b1
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip debb85f496c9cc70663eac31d3ad9153839c844c
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[013538bd65fd3cdbf3ca8b0c99b962c70473c803] io_uring: add 'io_comp_state' to struct io_submit_state
testing commit 013538bd65fd3cdbf3ca8b0c99b962c70473c803 with gcc (GCC) 8.1.0
kernel signature: 970857bd491ba2b529abcef48304bffe2103c6015761f55b0f72034ce159b611
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 013538bd65fd3cdbf3ca8b0c99b962c70473c803
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[8b3656af2a37dc538d21e144a5a94bacae05e9f1] io_uring: fix lost cqe->flags
testing commit 8b3656af2a37dc538d21e144a5a94bacae05e9f1 with gcc (GCC) 8.1.0
kernel signature: 8d385d386fd94af8a9edbbd242343db4532c032a1a3651c58a0174d36818ce53
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 8b3656af2a37dc538d21e144a5a94bacae05e9f1
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[1c2da9e8839d6437b43f2c805411d1a0cbd70165] io_uring: remove empty cleanup of OP_OPEN* reqs
testing commit 1c2da9e8839d6437b43f2c805411d1a0cbd70165 with gcc (GCC) 8.1.0
kernel signature: 413c1fcd511f449a61167e656fb633c103134747e2d6c663964d84b67143c76a
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 1c2da9e8839d6437b43f2c805411d1a0cbd70165
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[cf2f54255d0342cfbd273cbb964ad6bc7674f587] io_uring: don't fail iopoll requeue without ->mm
testing commit cf2f54255d0342cfbd273cbb964ad6bc7674f587 with gcc (GCC) 8.1.0
kernel signature: 66bd8dc4a93933fb81c77efcdc2b7c78af1577503d685d486998f6cca9bc6cb5
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip cf2f54255d0342cfbd273cbb964ad6bc7674f587
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[0f7e466b393abab86be96ffcf00af383afddc0d1] io_uring: place cflags into completion data
testing commit 0f7e466b393abab86be96ffcf00af383afddc0d1 with gcc (GCC) 8.1.0
kernel signature: 66d7deee434f85b0f24b4b3ed2c5d5b154ec66ca812e9b8dfa1e50501599bbc4
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 0f7e466b393abab86be96ffcf00af383afddc0d1
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[c2c4c83c58cbca23527fee93b49738a5a84272a1] io_uring: use new io_req_task_work_add() helper throughout
testing commit c2c4c83c58cbca23527fee93b49738a5a84272a1 with gcc (GCC) 8.1.0
kernel signature: 0504a1365071be5c2e651ace6ada8374e68d40a0047c6eca0aec7116cf4fb650
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip c2c4c83c58cbca23527fee93b49738a5a84272a1
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[27dc8338e5fb0e0ed5b272e792f4ffad7f3bc03e] io_uring: use non-intrusive list for defer
testing commit 27dc8338e5fb0e0ed5b272e792f4ffad7f3bc03e with gcc (GCC) 8.1.0
kernel signature: f2399348d86490df5ff4ad0d05e6ae5f5b893cba4fa605e2d6f7b97fedde2588
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 27dc8338e5fb0e0ed5b272e792f4ffad7f3bc03e
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[4c6e277c4cc4a6b3b2b9c66a7b014787ae757cc1] io_uring: abstract out task work running
testing commit 4c6e277c4cc4a6b3b2b9c66a7b014787ae757cc1 with gcc (GCC) 8.1.0
kernel signature: 569df082597a77e90aa4c8562a40974c42990e2a4413687ac90b90889c78b52b
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 4c6e277c4cc4a6b3b2b9c66a7b014787ae757cc1
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[135fcde8496b03d31648171dbc038990112e41d5] io_uring: add req->timeout.list
testing commit 135fcde8496b03d31648171dbc038990112e41d5 with gcc (GCC) 8.1.0
kernel signature: d006801fd8f52fe8c1230a05e5a8ff907dc9351daf1f239105f3419531d29e7c
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 135fcde8496b03d31648171dbc038990112e41d5
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[58c6a581decbcdd7f49eb7cab27ee14cef247fd5] Merge branch 'io_uring-5.8' into for-5.9/io_uring
testing commit 58c6a581decbcdd7f49eb7cab27ee14cef247fd5 with gcc (GCC) 8.1.0
kernel signature: f15c61ff85e642807e14b172d0cb9a0941fa993778b283bb7ba1b33ee99871b0
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 58c6a581decbcdd7f49eb7cab27ee14cef247fd5
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[d21ffe7eca82d47b489760899912f81e30456e2e] io_uring: use inflight_entry list for iopoll'ing
testing commit d21ffe7eca82d47b489760899912f81e30456e2e with gcc (GCC) 8.1.0
kernel signature: 22da71976846f16c08dddd0b4ade5c5be59886fb8c8acb98b56b441dc032e00f
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip d21ffe7eca82d47b489760899912f81e30456e2e
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[3fa5e0f331280237af918ab2e7a160f5a68d3e7d] io_uring: optimise io_req_find_next() fast check
testing commit 3fa5e0f331280237af918ab2e7a160f5a68d3e7d with gcc (GCC) 8.1.0
kernel signature: e3aba5f202f4a335274c72cfd897fa9c6e42d84f93da8f0acd23ac0050357e3a
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 3fa5e0f331280237af918ab2e7a160f5a68d3e7d
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[1bcb8c5d65a845e0ecb9e82237c399b29b8d15ea] io_uring: fix feeding io-wq with uninit reqs
testing commit 1bcb8c5d65a845e0ecb9e82237c399b29b8d15ea with gcc (GCC) 8.1.0
kernel signature: 27ee80b20fb99c1929ee20f5afa10eede2a293f112b80508f1df3a66a173d99b
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 1bcb8c5d65a845e0ecb9e82237c399b29b8d15ea
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[0be0b0e33b0bfd08264b108512e44b3907fe987b] io_uring: simplify io_async_task_func()
testing commit 0be0b0e33b0bfd08264b108512e44b3907fe987b with gcc (GCC) 8.1.0
kernel signature: 5ce38bd1f202c95ed8eefd4c2395a1001542d8287d217ee46f17bd7c74b47583
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 0be0b0e33b0bfd08264b108512e44b3907fe987b
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[710c2bfb66474a186b0196e3342d43db0e6c04e1] io_uring: fix missing io_grab_files()
testing commit 710c2bfb66474a186b0196e3342d43db0e6c04e1 with gcc (GCC) 8.1.0
kernel signature: 27a3e9fcd83023294edc940f399315747009bf03e19e044f3812e2a8b0f03098
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 710c2bfb66474a186b0196e3342d43db0e6c04e1
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[a31eb4a2f1650fa578082ad9e9845487ecd90abe] io_uring: use EPOLLEXCLUSIVE flag to aoid thundering herd type behavior
testing commit a31eb4a2f1650fa578082ad9e9845487ecd90abe with gcc (GCC) 8.1.0
kernel signature: 8cfb0d709ea0103b5759d2656219b8724db63f55a9de05886f7c14b7da1a82d4
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip a31eb4a2f1650fa578082ad9e9845487ecd90abe
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[e6543a816edca00b6b4c48625d142059d7211059] io_uring: remove inflight batching in free_many()
testing commit e6543a816edca00b6b4c48625d142059d7211059 with gcc (GCC) 8.1.0
kernel signature: b4fdaacf6dc9a1e27192e95048bff7b0f7a9006e24324eadc0bd65562bd75e52
run #0: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #1: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #2: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #3: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #4: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #5: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #6: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #7: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #8: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
run #9: boot failed: can't ssh into the instance
# git bisect skip e6543a816edca00b6b4c48625d142059d7211059
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[309758254ea62e07471abcaeca5b5c2173f4ebc2] io_uring: report pinned memory usage
testing commit 309758254ea62e07471abcaeca5b5c2173f4ebc2 with gcc (GCC) 8.1.0
kernel signature: fccdae8c4a48d3327a2bd03d2d9c18738b3f31aa05a57b1ef415dd2ce7ecb3d9
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 309758254ea62e07471abcaeca5b5c2173f4ebc2
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[c3524383333e4ff2f720ab0c02b3a329f72de78b] io_uring: batch-free linked requests as well
testing commit c3524383333e4ff2f720ab0c02b3a329f72de78b with gcc (GCC) 8.1.0
kernel signature: ca580a5859d683a2302f56f5d0424e67e4e082b527e2513557c39eaaf53ca3ed
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip c3524383333e4ff2f720ab0c02b3a329f72de78b
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[ac8691c415e0ce0b8734cb6d9df2df18608eebed] io_uring: always plug for any number of IOs
testing commit ac8691c415e0ce0b8734cb6d9df2df18608eebed with gcc (GCC) 8.1.0
kernel signature: 6b0f21b31d3d2e53e9c970cf339c7b0c2bce4cba059c69903c9d37643a4e99f7
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip ac8691c415e0ce0b8734cb6d9df2df18608eebed
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[1400e69705baf98d1c9cb73b592a3a68aab1d852] io_uring: use more specific type in rcv/snd msg cp
testing commit 1400e69705baf98d1c9cb73b592a3a68aab1d852 with gcc (GCC) 8.1.0
kernel signature: 11c104213c2d6cd5a262e22becbbd2c7ade5b49780a94844d6aacf06d5694375
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 1400e69705baf98d1c9cb73b592a3a68aab1d852
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[f063c5477eb392c315aa25ad538b4920b367ea05] io_uring: fix missing io_queue_linked_timeout()
testing commit f063c5477eb392c315aa25ad538b4920b367ea05 with gcc (GCC) 8.1.0
kernel signature: 07b2ad8a56e16d415f125a1cca7ace54287c92d5b3bf7493e92079253759bc6a
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip f063c5477eb392c315aa25ad538b4920b367ea05
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[6795c5aba247653f99d1f336ff496dd74659b322] io_uring: clean up req->result setting by rw
testing commit 6795c5aba247653f99d1f336ff496dd74659b322 with gcc (GCC) 8.1.0
kernel signature: 48743ac210de0310af8b146366253998ee5f452f1b3c96cf253cdc72deffa635
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 6795c5aba247653f99d1f336ff496dd74659b322
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[f56040b81999871973d21f334b4657957422c90e] io_uring: deduplicate io_grab_files() calls
testing commit f56040b81999871973d21f334b4657957422c90e with gcc (GCC) 8.1.0
kernel signature: 33d8d9ccf6ccc054ccbfec91158f6b9ff523532ceb032ddbf159e28280267202
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip f56040b81999871973d21f334b4657957422c90e
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[f3a6fa2267480d7f19fbde8316372be46055e548] io_uring: fix iopoll -EAGAIN handling
testing commit f3a6fa2267480d7f19fbde8316372be46055e548 with gcc (GCC) 8.1.0
kernel signature: 12699bf8d4fd3b25a2ffc3aeeafac6ca11f98083877e02429814c841876341d4
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip f3a6fa2267480d7f19fbde8316372be46055e548
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[23b3628e45924419399da48c2b3a522b05557c91] io_uring: clear IORING_SQ_NEED_WAKEUP after executing task works
testing commit 23b3628e45924419399da48c2b3a522b05557c91 with gcc (GCC) 8.1.0
kernel signature: ff5d73db6522bfb25e97fa26b8dc2fd86b9ae934f047125e67cb0e0a69299cf9
all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call
# git bisect skip 23b3628e45924419399da48c2b3a522b05557c91
Bisecting: 65 revisions left to test after this (roughly 6 steps)
[2bc9930e78fe0cb3e7b7e3169de0a40baee38d29] io_uring: get rid of __req_need_defer()
revisions tested: 51, total time: 8h0m37.888223212s (build: 4h56m12.432864329s, test: 3h1m29.996392263s)
error: bisection is taking too long (>8h0m0s), aborting