bisecting cause commit starting from 7c30b859a947535f2213277e827d7ac7dcff9c84
building syzkaller on 39acb39de241670ec7f96312c37e4e84f97f5f19
testing commit 7c30b859a947535f2213277e827d7ac7dcff9c84 with gcc (GCC) 8.1.0
kernel signature: 053d7e18641b843be9386f3044cf2512ba955809393641f85b13a71e3f730a28
all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in bdev_read_page
testing release v5.7
testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.1.0
kernel signature: e5d81d892e6b1c71fb619d5086c65c685c411e85b00757b4034997c77c3b7a0b
all runs: OK
# git bisect start 7c30b859a947535f2213277e827d7ac7dcff9c84 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162
Bisecting: 8066 revisions left to test after this (roughly 13 steps)
[a0a4d17e02a80a74a63c7cbb7bc8cea2f0b7d8b1] Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux
testing commit a0a4d17e02a80a74a63c7cbb7bc8cea2f0b7d8b1 with gcc (GCC) 8.1.0
kernel signature: a3b4adbea41260ed8e1d95693e2881266d61738365f7321c70f14fd626c07457
all runs: crashed: general protection fault in bdev_read_page
# git bisect bad a0a4d17e02a80a74a63c7cbb7bc8cea2f0b7d8b1
Bisecting: 4068 revisions left to test after this (roughly 12 steps)
[09587a09ada2ed7c39aedfa2681152b5ac5641ee] arm64: mm: use ARCH_HAS_DEBUG_WX instead of arch defined
testing commit 09587a09ada2ed7c39aedfa2681152b5ac5641ee with gcc (GCC) 8.1.0
kernel signature: 2501304557a873435c00bfdf429c0b61fc9853d5fa4de02cc4f87ce2c06b922b
all runs: crashed: general protection fault in bdev_read_page
# git bisect bad 09587a09ada2ed7c39aedfa2681152b5ac5641ee
Bisecting: 2192 revisions left to test after this (roughly 11 steps)
[cfa3b8068b09f25037146bfd5eed041b78878bee] Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
testing commit cfa3b8068b09f25037146bfd5eed041b78878bee with gcc (GCC) 8.1.0
kernel signature: f9463e22311e82dedae7d823c790272e99c59ed6d2431899fb820931272de4e3
all runs: OK
# git bisect good cfa3b8068b09f25037146bfd5eed041b78878bee
Bisecting: 1106 revisions left to test after this (roughly 10 steps)
[a1fb548962397bb8609bb46e566809a9a1b30044] Merge tag 'drm-intel-next-2020-04-30' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
testing commit a1fb548962397bb8609bb46e566809a9a1b30044 with gcc (GCC) 8.1.0
kernel signature: 82a88859141dea6f199a399b2ed53fbb5c15c604972e45ab05279e0f66fd50a6
all runs: OK
# git bisect good a1fb548962397bb8609bb46e566809a9a1b30044
Bisecting: 634 revisions left to test after this (roughly 9 steps)
[750a02ab8d3c49ca7d23102be90d3d1db19e2827] Merge tag 'for-5.8/block-2020-06-01' of git://git.kernel.dk/linux-block
testing commit 750a02ab8d3c49ca7d23102be90d3d1db19e2827 with gcc (GCC) 8.1.0
kernel signature: b06c8821db74d3e8f42c66282c9638d71d96dd551a4c2c2eb657aac75025262f
all runs: OK
# git bisect good 750a02ab8d3c49ca7d23102be90d3d1db19e2827
Bisecting: 277 revisions left to test after this (roughly 8 steps)
[16d91548d1057691979de4686693f0ff92f46000] Merge tag 'xfs-5.8-merge-8' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
testing commit 16d91548d1057691979de4686693f0ff92f46000 with gcc (GCC) 8.1.0
kernel signature: 21142f1bf6e936430e6ce13ff5144a875bf1e92c23633494195d06cc8aef6d18
all runs: crashed: general protection fault in bdev_read_page
# git bisect bad 16d91548d1057691979de4686693f0ff92f46000
Bisecting: 186 revisions left to test after this (roughly 8 steps)
[bce159d734091fe31340976081577333f52a85e4] Merge tag 'for-5.8/drivers-2020-06-01' of git://git.kernel.dk/linux-block
testing commit bce159d734091fe31340976081577333f52a85e4 with gcc (GCC) 8.1.0
kernel signature: 2a0eed9ea3f30b036d149f9df87ee5ce7f5c63a95070b09e20876792f4ff32ae
all runs: crashed: general protection fault in bdev_read_page
# git bisect bad bce159d734091fe31340976081577333f52a85e4
Bisecting: 84 revisions left to test after this (roughly 6 steps)
[12aebfac27ab69b5ed333c94fda45ef31ba2fc2a] floppy: cleanup: add a few comments about expectations in certain functions
testing commit 12aebfac27ab69b5ed333c94fda45ef31ba2fc2a with gcc (GCC) 8.1.0
revisions tested: 10, total time: 1h53m1.517107879s (build: 53m3.932351635s, test: 58m41.339105045s)
error: drivers/block/aoe/aoeblk.c:410:21: error: 'struct backing_dev_info' has no member named 'name'