bisecting fixing commit since f6d5cb9e2c06f7d583dd9f4f7cca21d13d78c32a building syzkaller on d5a3ae1f760e7cb2cd5a721d9645ae22eae114fe testing commit f6d5cb9e2c06f7d583dd9f4f7cca21d13d78c32a with gcc (GCC) 8.1.0 kernel signature: b5b3f6aee36fde2565df9bbfac60c04a79cf686f4122565d525bc8f459786de4 run #0: crashed: general protection fault in __tty_fasync run #1: crashed: general protection fault in __tty_fasync run #2: crashed: general protection fault in __tty_fasync run #3: crashed: general protection fault in __tty_fasync run #4: crashed: general protection fault in __tty_fasync run #5: crashed: general protection fault in __tty_fasync run #6: crashed: general protection fault in __tty_fasync run #7: crashed: general protection fault in __tty_fasync run #8: crashed: general protection fault in __tty_fasync run #9: crashed: general protection fault in tty_release testing current HEAD b09c34517e1ac4018e3bb75ed5c8610a8a1f486b testing commit b09c34517e1ac4018e3bb75ed5c8610a8a1f486b with gcc (GCC) 8.1.0 kernel signature: 805933270364d93f6f08bd7202a45790ca0ceab95503bc2ce71f3fcd66f3c8a6 all runs: OK # git bisect start b09c34517e1ac4018e3bb75ed5c8610a8a1f486b f6d5cb9e2c06f7d583dd9f4f7cca21d13d78c32a Bisecting: 316 revisions left to test after this (roughly 8 steps) [61279a7b3e337b8c8605987591964db4a2b3eb91] SUNRPC: stop printk reading past end of string testing commit 61279a7b3e337b8c8605987591964db4a2b3eb91 with gcc (GCC) 8.1.0 kernel signature: 04ad6731740006f98897040b1607fa23778da838e6e9a791027e324947a1ebb5 all runs: OK # git bisect bad 61279a7b3e337b8c8605987591964db4a2b3eb91 Bisecting: 158 revisions left to test after this (roughly 7 steps) [9895dfea9610ae54be8890b98eb17fd7f1496c75] bnxt_en: Fix PCI AER error recovery flow testing commit 9895dfea9610ae54be8890b98eb17fd7f1496c75 with gcc (GCC) 8.1.0 kernel signature: 5e0e65b35c27bfd89b0ba3e9767b0ef4f43ce28a23f5a42032b1837d2096bfef run #0: crashed: general protection fault in __tty_fasync run #1: crashed: general protection fault in __tty_fasync run #2: crashed: general protection fault in __tty_fasync run #3: crashed: general protection fault in __tty_fasync run #4: crashed: general protection fault in __tty_fasync run #5: crashed: general protection fault in tty_release run #6: crashed: general protection fault in __tty_fasync run #7: crashed: general protection fault in tty_release run #8: crashed: general protection fault in __tty_fasync run #9: crashed: general protection fault in __tty_fasync # git bisect good 9895dfea9610ae54be8890b98eb17fd7f1496c75 Bisecting: 79 revisions left to test after this (roughly 6 steps) [d2dd6d5a77c5dbee03a5ffe75811f6e906599df4] arm64: dts: ns2: Fixed QSPI compatible string testing commit d2dd6d5a77c5dbee03a5ffe75811f6e906599df4 with gcc (GCC) 8.1.0 kernel signature: 5f6628afcefe68cda21fd2b8844c5f9617cb2fe5354ad58f8b8b8abbf723a437 all runs: OK # git bisect bad d2dd6d5a77c5dbee03a5ffe75811f6e906599df4 Bisecting: 39 revisions left to test after this (roughly 5 steps) [b0a689f84d53a8b923302cfab10527ada27d962c] affs: fix basic permission bits to actually work testing commit b0a689f84d53a8b923302cfab10527ada27d962c with gcc (GCC) 8.1.0 kernel signature: 018c1df8b197059bfbe8688005579e94dc11c56dd39807e02f9152f972a339f6 all runs: OK # git bisect bad b0a689f84d53a8b923302cfab10527ada27d962c Bisecting: 19 revisions left to test after this (roughly 4 steps) [884fee7632168ab59ed49a26de430fa3ed5c6a86] xfs: don't update mtime on COW faults testing commit 884fee7632168ab59ed49a26de430fa3ed5c6a86 with gcc (GCC) 8.1.0 kernel signature: 6f543b27a2013019c2f49037b6f0adff5db200181d75c0294f3367f5b7e3d250 all runs: OK # git bisect bad 884fee7632168ab59ed49a26de430fa3ed5c6a86 Bisecting: 9 revisions left to test after this (roughly 3 steps) [37d933e8b41b83bb8278815e366aec5a542b7e31] fix regression in "epoll: Keep a reference on files added to the check list" testing commit 37d933e8b41b83bb8278815e366aec5a542b7e31 with gcc (GCC) 8.1.0 kernel signature: 16f1a7b335a67fec71433b58be0dec63641ad0c5a689e4740ab1131f66c3fc7c all runs: OK # git bisect bad 37d933e8b41b83bb8278815e366aec5a542b7e31 Bisecting: 4 revisions left to test after this (roughly 2 steps) [0430561c8e0f4b497b29a169445e2477c607e27b] selftests/bpf: Fix massive output from test_maps testing commit 0430561c8e0f4b497b29a169445e2477c607e27b with gcc (GCC) 8.1.0 kernel signature: 175064bd45f428863ffb90d3b474412bc9db6db9a8d286f1d75e75679db1985f run #0: crashed: general protection fault in __tty_fasync run #1: crashed: general protection fault in __tty_fasync run #2: crashed: general protection fault in __tty_fasync run #3: crashed: general protection fault in __tty_fasync run #4: crashed: general protection fault in __tty_fasync run #5: crashed: general protection fault in tty_release run #6: crashed: general protection fault in tty_release run #7: crashed: general protection fault in __tty_fasync run #8: crashed: general protection fault in __tty_fasync run #9: crashed: general protection fault in __tty_fasync # git bisect good 0430561c8e0f4b497b29a169445e2477c607e27b Bisecting: 2 revisions left to test after this (roughly 1 step) [dff6a2c2828bce13f32c62029def97195f8830f6] nvmet-fc: Fix a missed _irqsave version of spin_lock in 'nvmet_fc_fod_op_done()' testing commit dff6a2c2828bce13f32c62029def97195f8830f6 with gcc (GCC) 8.1.0 kernel signature: bce1e1bce6a3e89e04b0eda874ee097ed3f2e0106dfa8087e144d878b01d372f run #0: crashed: general protection fault in __tty_fasync run #1: crashed: general protection fault in __tty_fasync run #2: crashed: general protection fault in tty_release run #3: crashed: general protection fault in __tty_fasync run #4: crashed: WARNING: ODEBUG bug in exit_to_usermode_loop run #5: crashed: general protection fault in tty_release run #6: crashed: general protection fault in __tty_fasync run #7: crashed: general protection fault in __tty_fasync run #8: crashed: general protection fault in __tty_fasync run #9: crashed: general protection fault in __tty_fasync # git bisect good dff6a2c2828bce13f32c62029def97195f8830f6 Bisecting: 0 revisions left to test after this (roughly 1 step) [f00d82c3fb4368afb41cba89b287801a7888627c] net: ethernet: mlx4: Fix memory allocation in mlx4_buddy_init() testing commit f00d82c3fb4368afb41cba89b287801a7888627c with gcc (GCC) 8.1.0 kernel signature: 44f40ea7f2be22f8ee21f83b53c438ffd63cb1c89befa4496055a807ec7a2b90 run #0: crashed: general protection fault in __tty_fasync run #1: crashed: general protection fault in __tty_fasync run #2: crashed: general protection fault in tty_release run #3: crashed: general protection fault in __tty_fasync run #4: crashed: general protection fault in tty_release run #5: crashed: WARNING: ODEBUG bug in exit_to_usermode_loop run #6: crashed: general protection fault in __tty_fasync run #7: crashed: general protection fault in __tty_fasync run #8: crashed: general protection fault in __tty_fasync run #9: crashed: general protection fault in tty_release # git bisect good f00d82c3fb4368afb41cba89b287801a7888627c 37d933e8b41b83bb8278815e366aec5a542b7e31 is the first bad commit commit 37d933e8b41b83bb8278815e366aec5a542b7e31 Author: Al Viro Date: Wed Sep 2 11:30:48 2020 -0400 fix regression in "epoll: Keep a reference on files added to the check list" [ Upstream commit 77f4689de17c0887775bb77896f4cc11a39bf848 ] epoll_loop_check_proc() can run into a file already committed to destruction; we can't grab a reference on those and don't need to add them to the set for reverse path check anyway. Tested-by: Marc Zyngier Fixes: a9ed4a6560b8 ("epoll: Keep a reference on files added to the check list") Signed-off-by: Al Viro Signed-off-by: Sasha Levin fs/eventpoll.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) culprit signature: 16f1a7b335a67fec71433b58be0dec63641ad0c5a689e4740ab1131f66c3fc7c parent signature: 44f40ea7f2be22f8ee21f83b53c438ffd63cb1c89befa4496055a807ec7a2b90 revisions tested: 11, total time: 3h1m55.347049413s (build: 1h40m21.871353593s, test: 1h20m9.335698421s) first good commit: 37d933e8b41b83bb8278815e366aec5a542b7e31 fix regression in "epoll: Keep a reference on files added to the check list" recipients (to): ["maz@kernel.org" "sashal@kernel.org" "viro@zeniv.linux.org.uk"] recipients (cc): []