Hi, On stable v4.14.40-rc1, commit below breaks kernel boot on ARMv7 board (Odroid XU3 with Samsung Exynos5422, exynos_defconfig). The kernel hangs on "Starting kernel ...". Full log: http://www.krzk.eu/#/builders/1/builds/1897 The board boots from TFTP with NFS root (NFSv4). commit 449a8040a3b68a58131453b8f3dcfb411e85b1f5 Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> Date: Mon Jan 8 14:35:52 2018 -0800 rcu: Create RCU-specific workqueues with rescuers [ Upstream commit ad7c946b35ad455417fdd4bc0e17deda4011841b ] Bisect log: git bisect start # good: [7d6240f0fb85430ae4f490824fdf8d0a078dfcd2] Linux 4.14.39 git bisect good 7d6240f0fb85430ae4f490824fdf8d0a078dfcd2 # bad: [c8cd674cefa12376b3f7f993ddb5b262f9c64dbf] Linux 4.14.40-rc1 git bisect bad c8cd674cefa12376b3f7f993ddb5b262f9c64dbf # good: [f122a2d150d85721e1c48561ed9073154a9afcc8] bonding: fix the err path for dev hwaddr sync in bond_enslave git bisect good f122a2d150d85721e1c48561ed9073154a9afcc8 # good: [e353b1ee991a8aa64103db2b8dba975f1c7f1f0f] usb: dwc2: hcd: Fix host channel halt flow git bisect good e353b1ee991a8aa64103db2b8dba975f1c7f1f0f # good: [95bcea0185094ba218ab24261658993a9af29d9f] serial: xuartps: Fix out-of-bounds access through DT alias git bisect good 95bcea0185094ba218ab24261658993a9af29d9f # good: [58d6d43c0d69602b9325bbc6194188711d1132cd] crypto: inside-secure - fix the extra cache computation git bisect good 58d6d43c0d69602b9325bbc6194188711d1132cd # good: [e1c90fdb0fd515dabb4e56a0cf5ebc276e16c3c7] drm: rcar-du: lvds: Fix LVDS startup on R-Car Gen3 git bisect good e1c90fdb0fd515dabb4e56a0cf5ebc276e16c3c7 # good: [d3ab1eddcbca4b4eb8ba43451e04df07d2ca5c99] ARM: dts: imx7d: cl-som-imx7: fix pinctrl_enet git bisect good d3ab1eddcbca4b4eb8ba43451e04df07d2ca5c99 # good: [6a4469c29bddd0e7c646b2534787d47c77729720] ASoC: samsung: i2s: Ensure the RCLK rate is properly determined git bisect good 6a4469c29bddd0e7c646b2534787d47c77729720 # good: [60f7a71df26eca547c542d7d80895257ba10fda6] kdb: make "mdr" command repeat git bisect good 60f7a71df26eca547c542d7d80895257ba10fda6 # bad: [449a8040a3b68a58131453b8f3dcfb411e85b1f5] rcu: Create RCU-specific workqueues with rescuers git bisect bad 449a8040a3b68a58131453b8f3dcfb411e85b1f5 # good: [b5e56644256a462033f6b52212b9dd135e5fed10] xhci: Show what USB release number the xHC supports from protocol capablity git bisect good b5e56644256a462033f6b52212b9dd135e5fed10 # first bad commit: [449a8040a3b68a58131453b8f3dcfb411e85b1f5] rcu: Create RCU-specific workqueues with rescuers Let me know if you need any more information. Best regards, Krzysztof
