** Tags removed: verification-needed-cosmic ** Tags added: verification-done-cosmic
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1797139 Title: arm64: snapdragon: WARNING: CPU: 0 PID: 1 arch/arm64/kernel/setup.c:271 reserve_memblock_reserved_regions Status in linux package in Ubuntu: Invalid Status in linux source package in Bionic: Fix Committed Status in linux source package in Cosmic: Invalid Bug description: Impact: Upon boot on a dragonboard410c using a recent Bionic or Cosmic kernel: ... [ 0.049776] WARNING: CPU: 0 PID: 1 at arch/arm64/kernel/setup.c:271 reserve_memblock_reserved_regions+0xe0/0x148 [ 0.049783] Modules linked in: [ 0.049797] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.18.0-8-snapdragon #9 [ 0.049803] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT) [ 0.049813] pstate: 80400005 (Nzcv daif +PAN -UAO) [ 0.049821] pc : reserve_memblock_reserved_regions+0xe0/0x148 [ 0.049829] lr : reserve_memblock_reserved_regions+0xd8/0x148 [ 0.049836] sp : ffff000008033d40 [ 0.049841] x29: ffff000008033d40 x28: 0000000000000000 [ 0.049852] x27: ffff000009410584 x26: ffff000009577018 [ 0.049863] x25: 0000000000000000 x24: 0000000000488020 [ 0.049874] x23: 00000000bfffffff x22: ffff0000090e8928 [ 0.049885] x21: ffff000008ffb578 x20: ffff000009a48708 [ 0.049896] x19: ffff80003a409280 x18: 0000000000000000 [ 0.049906] x17: 0000000000000000 x16: 0000000000000000 [ 0.049917] x15: ffffffffffffffff x14: ffff000009a48708 [ 0.049927] x13: 0000000000000000 x12: 0000000000000028 [ 0.049938] x11: 0101010101010101 x10: 7f7f7f7f7f7f7f7f [ 0.049949] x9 : 0000000000000000 x8 : ffff80003a409300 [ 0.049959] x7 : 0000000000000000 x6 : 000000000000003f [ 0.049969] x5 : 0000000000000040 x4 : ffff80003d9ffc70 [ 0.049980] x3 : 00000000bd9fffff x2 : ffff000009c241b0 [ 0.049990] x1 : 0000000000000000 x0 : 0000000000000000 [ 0.050001] Call trace: [ 0.050010] reserve_memblock_reserved_regions+0xe0/0x148 [ 0.050021] do_one_initcall+0x54/0x1e0 [ 0.050031] kernel_init_freeable+0x254/0x2f8 [ 0.050043] kernel_init+0x18/0x110 [ 0.050052] ret_from_fork+0x10/0x18 [ 0.050063] ---[ end trace dc768b294fafe4aa ]--- ... commit 50d7ba36b916 upstream ("arm64: export memblock_reserve()d regions via /proc/iomem") backported in commit 62289841 in bionic/master, wrongly assumed that memblock_reserve() would not be used to reserve regions that aren't memory. It turns out, this is exactly what early_init_dt_reserve_memory_arch() will do if it finds a reservation that was also carved out of the memory node. Fix: Apply the attached patch and recompile The fix wad discussed here: https://www.spinics.net/lists/arm- kernel/msg675580.html How to test: Boot the patched kernel and check for the above WARNING in dmesg Regression potential: The patch didn't make it upstream yet, but the fix is very small and was tested on the lkml. Proposing for Bionic and Cosmic. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1797139/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
