Hi Willy Tarreau wrote: >> Is there a dependency I missed in 4.1? I don't really see anything that >> could have gone wrong there. > > Or maybe Thomas can run a bisect ? I cannot follow. I did a bisect between 4.1.7 and 4.1.8 as I have written in my first mail. The bad commit was: > commit 0571ba52a19e18a1c20469454231eef681cb1310 > Author: Herbert Xu > Date: Wed Dec 30 11:47:53 2015 +0800 > > crypto: af_alg - Disallow bind/setkey/... after accept(2) > > [ Upstream commit c840ac6af3f8713a71b4d2363419145760bd6044 ] > > Each af_alg parent socket obtained by socket(2) corresponds to a > tfm object once bind(2) has succeeded. An accept(2) call on that > parent socket creates a context which then uses the tfm object. > > Therefore as long as any child sockets created by accept(2) exist > the parent socket must not be modified or freed. > > This patch guarantees this by using locks and a reference count > on the parent socket. Any attempt to modify the parent socket will > fail with EBUSY. bisect log: > Bisecting: 114 revisions left to test after this (roughly 7 steps) > [3a1e81ad84e4d880b00ecf7ad8d03b9b772ddfa7] crypto: algif_hash - Fix race condition in hash_check_key > Bisecting: 56 revisions left to test after this (roughly 6 steps) > [d6341753c418d3699948290d8c0b9d9dc78bd209] udf: Prevent buffer overrun with multi-byte characters > Bisecting: 28 revisions left to test after this (roughly 5 steps) > [13aedd784b84cb7d8a3bb835941d80e99f5c796e] dmaengine: dw: fix cyclic transfer setup > Bisecting: 14 revisions left to test after this (roughly 4 steps) > [664ecf4f243bac17065cd9878790d40a592e2f3d] zram/zcomp: use GFP_NOIO to allocate streams > Bisecting: 7 revisions left to test after this (roughly 3 steps) > [0571ba52a19e18a1c20469454231eef681cb1310] crypto: af_alg - Disallow bind/setkey/... after accept(2) > Bisecting: 3 revisions left to test after this (roughly 2 steps) > [2c641f5b0c8e87d43235ce39890bcc4d0c7cd2fb] memcg: only free spare array when readers are done > Bisecting: 1 revision left to test after this (roughly 1 step) > [0e19e24c3fe0abde8e2c5f4543616a251ccea6bf] kernel/panic.c: turn off locks debug before releasing console lock > Bisecting: 0 revisions left to test after this (roughly 0 steps) > [bc24ac15b0746172a8f603171352aa54abcf7c78] printk: do cond_resched() between lines while outputting to consoles > 0571ba52a19e18a1c20469454231eef681cb1310 is the first bad commit -Thomas -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html