bisecting fixing commit since fb279f4e238617417b132a550f24c1e86d922558 building syzkaller on fd2a5f28eb5e2b7c83b5e814f53e44e2a5dde24c testing commit fb279f4e238617417b132a550f24c1e86d922558 with gcc (GCC) 8.1.0 kernel signature: 26e2962afd99bc17d5bb87551bc6de7108963f4a44f418a14d57e51d16ea728c all runs: crashed: possible deadlock in uart_write testing current HEAD 407ab579637ced6dc32cfb2295afb7259cca4b22 testing commit 407ab579637ced6dc32cfb2295afb7259cca4b22 with gcc (GCC) 8.1.0 kernel signature: c6430f4118b65ed8a3ea0f2afc782497adca1b05f888c7d5e6d794c706dfb960 all runs: OK # git bisect start 407ab579637ced6dc32cfb2295afb7259cca4b22 fb279f4e238617417b132a550f24c1e86d922558 Bisecting: 32813 revisions left to test after this (roughly 15 steps) [bf1102877751175fe6c1d68734d3c57d4af65df9] drm/amd/powerplay: add control method to bypass metrics cache on Vega12 testing commit bf1102877751175fe6c1d68734d3c57d4af65df9 with gcc (GCC) 8.1.0 kernel signature: 4c990e49e19dc75f3fc159f966262fc7c3458472357850e1d16cdd449127dd5d all runs: basic kernel testing failed: KASAN: use-after-free Write in afs_wake_up_async_call # git bisect skip bf1102877751175fe6c1d68734d3c57d4af65df9 Bisecting: 32813 revisions left to test after this (roughly 15 steps) [c83a47e50d8fd3825a4758158e9edd5acdc74185] mptcp: subflow: add mptcp_subflow_init_cookie_req helper testing commit c83a47e50d8fd3825a4758158e9edd5acdc74185 with gcc (GCC) 8.1.0 kernel signature: 19c7ac1c49fd2984b1f5e96dab6eee8fb4aae942a4c6e4171b239594721914b0 all runs: crashed: possible deadlock in uart_write # git bisect good c83a47e50d8fd3825a4758158e9edd5acdc74185 Bisecting: 15087 revisions left to test after this (roughly 14 steps) [3bff6112c80cecb76af5fe485506f96e8adb6122] Merge tag 'perf-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 3bff6112c80cecb76af5fe485506f96e8adb6122 with gcc (GCC) 8.1.0 kernel signature: 02ac2cdd5d7563b7cc1252698ed77dc3217ccfa687e82a11f5d8c57860c58196 all runs: crashed: possible deadlock in uart_write # git bisect good 3bff6112c80cecb76af5fe485506f96e8adb6122 Bisecting: 7890 revisions left to test after this (roughly 13 steps) [4d0e9df5e43dba52d38b251e3b909df8fa1110be] lib, uaccess: add failure injection to usercopy functions testing commit 4d0e9df5e43dba52d38b251e3b909df8fa1110be with gcc (GCC) 8.1.0 kernel signature: 608d85f82b0204f3b8cf35dd18233bf9f437c8921ca5f1d842a373f75becfec6 all runs: crashed: possible deadlock in uart_write # git bisect good 4d0e9df5e43dba52d38b251e3b909df8fa1110be Bisecting: 3955 revisions left to test after this (roughly 12 steps) [c922781fef43d2ddbdef36a3a281441bb153377b] mm: remove duplicate include statement in mmu.c testing commit c922781fef43d2ddbdef36a3a281441bb153377b with gcc (GCC) 8.1.0 kernel signature: 08e6ed45e13068c4511ba4cfa42f19c9ab35d4cd15561ec3cf78102a78ee1998 all runs: crashed: possible deadlock in uart_write # git bisect good c922781fef43d2ddbdef36a3a281441bb153377b Bisecting: 2020 revisions left to test after this (roughly 11 steps) [e731f3146ff3bba5424b40140e1a7e6f92e94964] Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc testing commit e731f3146ff3bba5424b40140e1a7e6f92e94964 with gcc (GCC) 8.1.0 kernel signature: a746f81af473b73f5d541c5afb07581c64d8ed932087c0063b1b2140ec223ae6 all runs: OK # git bisect bad e731f3146ff3bba5424b40140e1a7e6f92e94964 Bisecting: 967 revisions left to test after this (roughly 10 steps) [ceae608a54898fff2aa0aba358fe81af027ef8c9] Merge tag 'pwm/for-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm testing commit ceae608a54898fff2aa0aba358fe81af027ef8c9 with gcc (GCC) 8.1.0 kernel signature: eaa4f1061c78f77b65fc9d5539419fe8a2c8f4fd08e562958dd69db739b19c49 all runs: OK # git bisect bad ceae608a54898fff2aa0aba358fe81af027ef8c9 Bisecting: 492 revisions left to test after this (roughly 9 steps) [c4d6fe7311762f2e03b3c27ad38df7c40c80cc93] Merge tag 'xarray-5.9' of git://git.infradead.org/users/willy/xarray testing commit c4d6fe7311762f2e03b3c27ad38df7c40c80cc93 with gcc (GCC) 8.1.0 kernel signature: 5b8cc111da4b1b0c71f684dcca438d096b250f2168e2134dce58c1fc4a14611b all runs: crashed: possible deadlock in uart_write # git bisect good c4d6fe7311762f2e03b3c27ad38df7c40c80cc93 Bisecting: 238 revisions left to test after this (roughly 8 steps) [f56e65dff6ad52395ef45738799b4fb70ff43376] Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs testing commit f56e65dff6ad52395ef45738799b4fb70ff43376 with gcc (GCC) 8.1.0 kernel signature: ccd674ba0cda24910a35ccd9d01d6bee73515c4c22dbde043772b711c4a27743 all runs: OK # git bisect bad f56e65dff6ad52395ef45738799b4fb70ff43376 Bisecting: 141 revisions left to test after this (roughly 7 steps) [68a3633694ab37b368edc30d59235e8348e2d00e] Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging testing commit 68a3633694ab37b368edc30d59235e8348e2d00e with gcc (GCC) 8.1.0 kernel signature: eeb2d7f97e1602755f06bc09a3938c27f7f8ee37c858308582be0ae29a292410 all runs: crashed: possible deadlock in uart_write # git bisect good 68a3633694ab37b368edc30d59235e8348e2d00e Bisecting: 68 revisions left to test after this (roughly 6 steps) [334d431f65f05d3412c921875717b8c4ec6da71c] Merge tag '9p-for-5.10-rc1' of git://github.com/martinetd/linux testing commit 334d431f65f05d3412c921875717b8c4ec6da71c with gcc (GCC) 8.1.0 kernel signature: de0f5de3e313c60a153754f0568478bd665bce2e2531ffcbb1a4cc9f7983d12c all runs: crashed: possible deadlock in uart_write # git bisect good 334d431f65f05d3412c921875717b8c4ec6da71c Bisecting: 33 revisions left to test after this (roughly 5 steps) [2db27992dd565bf400658edc18f67aed0b6bc6cb] NFSD: Add READ_PLUS hole segment encoding testing commit 2db27992dd565bf400658edc18f67aed0b6bc6cb with gcc (GCC) 8.1.0 kernel signature: 5dedca7010d21bb5f7ab9b4d912f8f4ac9d56539171955b5f3ea1037c70324fa all runs: crashed: possible deadlock in uart_write # git bisect good 2db27992dd565bf400658edc18f67aed0b6bc6cb Bisecting: 16 revisions left to test after this (roughly 4 steps) [24717cfbbbbfa415d1e3dca0f21c417e5faf8208] Merge tag 'nfsd-5.10' of git://linux-nfs.org/~bfields/linux testing commit 24717cfbbbbfa415d1e3dca0f21c417e5faf8208 with gcc (GCC) 8.1.0 kernel signature: f302300656a8bc5794ab89cade019a57e84f2308a02af08907bc44188d7a9212 all runs: crashed: possible deadlock in uart_write # git bisect good 24717cfbbbbfa415d1e3dca0f21c417e5faf8208 Bisecting: 8 revisions left to test after this (roughly 3 steps) [81b1e242b8bdc1f5094b8d172cdc0c032fc761c1] test_bitmap: remove user bitmap tests testing commit 81b1e242b8bdc1f5094b8d172cdc0c032fc761c1 with gcc (GCC) 8.1.0 kernel signature: 98839a23bb32e096088121b61d9ae5e6ccd7ef54f7cc6cf788491ae420abe08a run #0: crashed: WARNING: ODEBUG bug in netdev_run_todo 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: OK # git bisect good 81b1e242b8bdc1f5094b8d172cdc0c032fc761c1 Bisecting: 4 revisions left to test after this (roughly 2 steps) [47058bb54b57962b3958a936ddbc59355e4c5504] x86: remove address space overrides using set_fs() testing commit 47058bb54b57962b3958a936ddbc59355e4c5504 with gcc (GCC) 8.1.0 kernel signature: 8d0b6a12370a4d659b1ea0c47577792c4928071623efda9d9f807ad58f314335 all runs: OK # git bisect bad 47058bb54b57962b3958a936ddbc59355e4c5504 Bisecting: 1 revision left to test after this (roughly 1 step) [999c83e8ffd90caa00ee6caf054e037cf8a27d0e] x86: move PAGE_OFFSET, TASK_SIZE & friends to page_{32,64}_types.h testing commit 999c83e8ffd90caa00ee6caf054e037cf8a27d0e with gcc (GCC) 8.1.0 kernel signature: 9733233c6f4b003e3d318dfbf97b6dca17cbe0fbfb1670bc9692665da516af66 all runs: OK # git bisect bad 999c83e8ffd90caa00ee6caf054e037cf8a27d0e Bisecting: 0 revisions left to test after this (roughly 0 steps) [c6f7c753f71cccb21d1a7f0c1127ce7804374c5e] lkdtm: remove set_fs-based tests testing commit c6f7c753f71cccb21d1a7f0c1127ce7804374c5e with gcc (GCC) 8.1.0 kernel signature: 98839a23bb32e096088121b61d9ae5e6ccd7ef54f7cc6cf788491ae420abe08a all runs: OK # git bisect bad c6f7c753f71cccb21d1a7f0c1127ce7804374c5e c6f7c753f71cccb21d1a7f0c1127ce7804374c5e is the first bad commit commit c6f7c753f71cccb21d1a7f0c1127ce7804374c5e Author: Christoph Hellwig Date: Thu Sep 3 16:22:37 2020 +0200 lkdtm: remove set_fs-based tests Once we can't manipulate the address limit, we also can't test what happens when the manipulation is abused. Signed-off-by: Christoph Hellwig Signed-off-by: Al Viro drivers/misc/lkdtm/bugs.c | 10 ---------- drivers/misc/lkdtm/core.c | 2 -- drivers/misc/lkdtm/lkdtm.h | 2 -- drivers/misc/lkdtm/usercopy.c | 15 --------------- tools/testing/selftests/lkdtm/tests.txt | 2 -- 5 files changed, 31 deletions(-) culprit signature: 98839a23bb32e096088121b61d9ae5e6ccd7ef54f7cc6cf788491ae420abe08a parent signature: 98839a23bb32e096088121b61d9ae5e6ccd7ef54f7cc6cf788491ae420abe08a revisions tested: 19, total time: 4h10m56.318203911s (build: 1h35m21.752352432s, test: 2h32m29.930546632s) first good commit: c6f7c753f71cccb21d1a7f0c1127ce7804374c5e lkdtm: remove set_fs-based tests recipients (to): ["arnd@arndb.de" "gregkh@linuxfoundation.org" "hch@lst.de" "linux-kselftest@vger.kernel.org" "shuah@kernel.org" "viro@zeniv.linux.org.uk"] recipients (cc): ["keescook@chromium.org" "linux-kernel@vger.kernel.org"]