bisecting fixing commit since cbfa1702aaf69b2311ea1b35e04f113c48368c67 building syzkaller on 1a3f94087169f62f9a5832828f62b4900e98b781 testing commit cbfa1702aaf69b2311ea1b35e04f113c48368c67 with gcc (GCC) 8.1.0 kernel signature: 68c6c87e58b2dd281aaa6b3ca7d3eea3b45d107bb0653bfec07b633a194afcef run #0: crashed: BUG: unable to handle kernel paging request in dqput run #1: crashed: BUG: unable to handle kernel paging request in dqput run #2: crashed: BUG: unable to handle kernel paging request in dqput run #3: crashed: BUG: unable to handle kernel paging request in dqput run #4: crashed: BUG: unable to handle kernel run #5: crashed: BUG: unable to handle kernel paging request in dqput run #6: crashed: BUG: unable to handle kernel paging request in dqput run #7: crashed: BUG: unable to handle kernel paging request in dqput run #8: crashed: BUG: unable to handle kernel paging request in dqput run #9: crashed: BUG: unable to handle kernel paging request in dqput testing current HEAD 2762b48e9611529239da2e68cba908dbbec9805f testing commit 2762b48e9611529239da2e68cba908dbbec9805f with gcc (GCC) 8.1.0 kernel signature: 7fc3f60990e6c91aa4bce78fa7bc0d74c589204cda3f7f03ee69af5ebf10ad15 all runs: OK # git bisect start 2762b48e9611529239da2e68cba908dbbec9805f cbfa1702aaf69b2311ea1b35e04f113c48368c67 Bisecting: 672 revisions left to test after this (roughly 9 steps) [3ac95d9564041a4f469e5c71884f4d7821ce68b2] tipc: fix use-after-free in tipc_bcast_get_mode testing commit 3ac95d9564041a4f469e5c71884f4d7821ce68b2 with gcc (GCC) 8.1.0 kernel signature: c7e9f8a7accb30d91e66f0a4cca27c46aecb2cddf47f005c64545673194ed637 all runs: crashed: BUG: unable to handle kernel paging request in dqput # git bisect good 3ac95d9564041a4f469e5c71884f4d7821ce68b2 Bisecting: 336 revisions left to test after this (roughly 8 steps) [6ccb22ebd1976d2d68b21285600f033d96626728] net: stmmac: delete the eee_ctrl_timer after napi disabled testing commit 6ccb22ebd1976d2d68b21285600f033d96626728 with gcc (GCC) 8.1.0 kernel signature: 3163bcd14980044d68b5e2a354e21aa714b791ec489b019903875e7443ce9870 run #0: crashed: BUG: unable to handle kernel paging request in dqput run #1: crashed: BUG: unable to handle kernel paging request in dqput run #2: crashed: BUG: unable to handle kernel paging request in dqput run #3: crashed: BUG: unable to handle kernel run #4: crashed: BUG: unable to handle kernel paging request in dqput run #5: crashed: BUG: unable to handle kernel paging request in dqput run #6: crashed: BUG: unable to handle kernel paging request in dqput run #7: crashed: BUG: unable to handle kernel paging request in dqput run #8: crashed: BUG: unable to handle kernel paging request in dqput run #9: crashed: BUG: unable to handle kernel paging request in dqput # git bisect good 6ccb22ebd1976d2d68b21285600f033d96626728 Bisecting: 168 revisions left to test after this (roughly 7 steps) [aca4660cbebcfb45817bc4bfe2a54a5d5404271e] s390/smp: perform initial CPU reset also for SMT siblings testing commit aca4660cbebcfb45817bc4bfe2a54a5d5404271e with gcc (GCC) 8.1.0 kernel signature: 413e222197e199581cfc725087288546e953ab7e8e11fb7cb850a6ad0e04aabb all runs: OK # git bisect bad aca4660cbebcfb45817bc4bfe2a54a5d5404271e Bisecting: 83 revisions left to test after this (roughly 6 steps) [ba327081d8bdc40b2b4843fd852680f2dabfdd70] memstick: fix a double-free bug in memstick_check testing commit ba327081d8bdc40b2b4843fd852680f2dabfdd70 with gcc (GCC) 8.1.0 kernel signature: 4bde1b0232cbcb9da2fb6fb173a9eac30be2068f7df16e7391506cb1e89a6d27 all runs: OK # git bisect bad ba327081d8bdc40b2b4843fd852680f2dabfdd70 Bisecting: 41 revisions left to test after this (roughly 5 steps) [13b25b55a2dd728fa5af9165a8c30433d5c799b2] md: fix a warning caused by a race between concurrent md_ioctl()s testing commit 13b25b55a2dd728fa5af9165a8c30433d5c799b2 with gcc (GCC) 8.1.0 kernel signature: 04084bd0d7ef01f31e2cc8f4c348ce194f9558681ce9b2564d26dd0f3b962b76 all runs: OK # git bisect bad 13b25b55a2dd728fa5af9165a8c30433d5c799b2 Bisecting: 20 revisions left to test after this (roughly 4 steps) [8859f5899ab92da690d6287dd339805155fa4fb6] kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling testing commit 8859f5899ab92da690d6287dd339805155fa4fb6 with gcc (GCC) 8.1.0 kernel signature: f749f2cfddfc4204675948d7ad2e2e3b2ca74ffcfb5550aa9af98e68ac3fe061 all runs: crashed: BUG: unable to handle kernel paging request in dqput # git bisect good 8859f5899ab92da690d6287dd339805155fa4fb6 Bisecting: 10 revisions left to test after this (roughly 3 steps) [27e1b18af55f85c57dddaf4c0d4d99d507a00b84] usb: gadget: f_fs: Re-use SS descriptors for SuperSpeedPlus testing commit 27e1b18af55f85c57dddaf4c0d4d99d507a00b84 with gcc (GCC) 8.1.0 kernel signature: c73b373452b7015cf9f2d088436643ad2a7641430e5b20b3dbbf64fcab70fbe6 run #0: crashed: BUG: unable to handle kernel run #1: crashed: BUG: unable to handle kernel paging request in dqput run #2: crashed: BUG: unable to handle kernel paging request in dqput run #3: crashed: BUG: unable to handle kernel paging request in dqput run #4: crashed: BUG: unable to handle kernel paging request in dqput run #5: crashed: BUG: unable to handle kernel paging request in dqput run #6: crashed: BUG: unable to handle kernel paging request in dqput run #7: crashed: BUG: unable to handle kernel paging request in dqput run #8: crashed: BUG: unable to handle kernel paging request in dqput run #9: crashed: BUG: unable to handle kernel paging request in dqput # git bisect good 27e1b18af55f85c57dddaf4c0d4d99d507a00b84 Bisecting: 5 revisions left to test after this (roughly 3 steps) [81ad6b09b27f34d668174fe19715bbc00c4eda82] ARM: dts: exynos: fix USB 3.0 pins supply being turned off on Odroid XU testing commit 81ad6b09b27f34d668174fe19715bbc00c4eda82 with gcc (GCC) 8.1.0 kernel signature: 3647b2c2d34fc61c2ea4dc9004db38e76eb0bc33d71b2d4818194a87339b00ba all runs: crashed: BUG: unable to handle kernel paging request in dqput # git bisect good 81ad6b09b27f34d668174fe19715bbc00c4eda82 Bisecting: 2 revisions left to test after this (roughly 2 steps) [a9c625fcddc078624e1e7a673443b29c71be3431] quota: Sanity-check quota file headers on load testing commit a9c625fcddc078624e1e7a673443b29c71be3431 with gcc (GCC) 8.1.0 kernel signature: 897b94b6b320b555b86784bc1957d18ade1499ac21d1bd2247182315238a6af9 all runs: OK # git bisect bad a9c625fcddc078624e1e7a673443b29c71be3431 Bisecting: 0 revisions left to test after this (roughly 1 step) [cf394db8b470c41589a7e8a2da0192b7a49c9cac] serial_core: Check for port state when tty is in error state testing commit cf394db8b470c41589a7e8a2da0192b7a49c9cac with gcc (GCC) 8.1.0 kernel signature: 3f0d5a04cd938863a9c9023b1c377203c63961255898cc4d4eb1023fc87bcd7a run #0: crashed: BUG: unable to handle kernel paging request in dqput run #1: crashed: BUG: unable to handle kernel paging request in dqput run #2: crashed: BUG: unable to handle kernel paging request in dqput run #3: crashed: BUG: unable to handle kernel paging request in dqput run #4: crashed: BUG: unable to handle kernel paging request in dqput run #5: crashed: BUG: unable to handle kernel paging request in dqput run #6: crashed: BUG: unable to handle kernel run #7: crashed: BUG: unable to handle kernel paging request in dqput run #8: crashed: BUG: unable to handle kernel paging request in dqput run #9: crashed: BUG: unable to handle kernel paging request in dqput # git bisect good cf394db8b470c41589a7e8a2da0192b7a49c9cac a9c625fcddc078624e1e7a673443b29c71be3431 is the first bad commit commit a9c625fcddc078624e1e7a673443b29c71be3431 Author: Jan Kara Date: Mon Nov 2 16:16:29 2020 +0100 quota: Sanity-check quota file headers on load commit 11c514a99bb960941535134f0587102855e8ddee upstream. Perform basic sanity checks of quota headers to avoid kernel crashes on corrupted quota files. CC: stable@vger.kernel.org Reported-by: syzbot+f816042a7ae2225f25ba@syzkaller.appspotmail.com Reviewed-by: Andreas Dilger Signed-off-by: Jan Kara Signed-off-by: Greg Kroah-Hartman fs/quota/quota_v2.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) culprit signature: 897b94b6b320b555b86784bc1957d18ade1499ac21d1bd2247182315238a6af9 parent signature: 3f0d5a04cd938863a9c9023b1c377203c63961255898cc4d4eb1023fc87bcd7a revisions tested: 12, total time: 2h41m36.692436483s (build: 1h38m21.332012307s, test: 1h2m10.126212852s) first good commit: a9c625fcddc078624e1e7a673443b29c71be3431 quota: Sanity-check quota file headers on load recipients (to): ["adilger@dilger.ca" "gregkh@linuxfoundation.org" "jack@suse.cz"] recipients (cc): []