Test-case snippet on original kernel on ESM (3.13.0-174.225) [ 1387.632017] cpu 4/pid 1920/task TWO :: change_prot_numa() :: address = 0x7f4560e00000, end = 0x7f4561000000 [ 1389.640322] cpu 5/pid 1921/task ONE :: do_huge_pmd_numa_page() :: addr/mask = 0x7f4560e00000, addr = 0x7f4560e00000, pmd = 0x80003fff52c009e6, *pmdp = 0x80003fff52c009e6, pmdp = 0xffff880037171838 [ 1389.640329] cpu 4/pid 1920/task TWO :: do_huge_pmd_numa_page() :: addr/mask = 0x7f4560e00000, addr = 0x7f4560e00000, pmd = 0x80003fff52c009e6, *pmdp = 0x80003fff52c009e6, pmdp = 0xffff880037171838 [ 1389.640330] cpu 4/pid 1920/task TWO :: Stage 1. T2 awaking up T1. Task 2 at entry point. [ 1389.640331] cpu 4/pid 1920/task TWO :: Stage 2. T2 waiting on T1. Task 2 waiting for Task 1 at exit/migration point. [ 1389.644003] cpu 5/pid 1921/task ONE :: Stage 1. T1 waiting on T2. Task 1 at entry point, checking for Task 2 at entry point too. [ 1389.644003] cpu 5/pid 1921/task ONE :: Stage 1. T1 resumed by T2 [ 1389.658668] cpu 5/pid 1921/task ONE :: migrate_misplaced_transhuge_page() :: addr/mask = 0x7f4560e00000, addr = 0x7f4560e00000, pmd = 0x80003fff52c009e6, *pmdp = 0x80003fff52c009e6, pmdp = 0xffff880037171838, node = 1 [ 1389.662649] cpu 5/pid 1921/task ONE :: Stage 2. T1 awaking up T2. Task 1 at migration point. [ 1389.662649] cpu 5/pid 1921/task ONE :: Stage 3. T1 waiting on T2. Task 1 waiting for Task 2 to check migration status. [ 1389.644003] cpu 4/pid 1920/task TWO :: Stage 2. T2 resumed by T1 [ 1389.665619] cpu 4/pid 1920/task TWO :: Stage 3. T2 awaking up T1. Task 2 has checked migration status. [ 1389.665619] cpu 4/pid 1920/task TWO :: Stage 4. T2 waiting on T1. Task 2 waiting for Task 1 to clear the PMD. [ 1389.662649] cpu 5/pid 1921/task ONE :: Stage 3. T1 resumed by T2 [ 1389.678390] cpu 5/pid 1921/task ONE :: Stage 4. T1 awaking up T2. Task 1 has cleared the PMD. [ 1389.680304] cpu 5/pid 1921/task ONE :: Stage 4. T1 warning up T2: it may BUG! [ 1389.680304] cpu 5/pid 1921/task ONE :: Stage 5. T1 sleep for 5s. [ 1390.668164] cpu 4/pid 1920/task TWO :: Stage 4. T2 resumed by T1 [ 1390.675697] cpu 4/pid 1920/task TWO :: Stage 4. T2 sleep for 1s. any BUG afterward?
[ 1391.680274] BUG: unable to handle kernel paging request at ffffeaffffffffc0 [ 1391.684094] IP: [<ffffffff811b3e81>] wait_migrate_huge_page+0x51/0x70 ... [ 1391.684094] CPU: 4 PID: 1920 Comm: test Tainted: G OX 3.13.0-174-generic #225-Ubuntu ... [ 1391.684094] RIP: 0010:[<ffffffff811b3e81>] [<ffffffff811b3e81>] wait_migrate_huge_page+0x51/0x70 ... [ 1391.684094] Call Trace: [ 1391.684094] [<ffffffff811b6f3c>] ? do_huge_pmd_numa_page+0x32c/0x390 [ 1391.684094] [<ffffffff811839e2>] handle_mm_fault+0x8f2/0xfb0 [ 1391.684094] [<ffffffff81748a73>] __do_page_fault+0x183/0x570 ... [ 1391.684094] RIP [<ffffffff811b3e81>] wait_migrate_huge_page+0x51/0x70 [ 1391.684094] RSP <ffff880037349d00> [ 1391.684094] CR2: ffffeaffffffffc0 [ 1391.684094] ---[ end trace dd39d1735fecdcae ]--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1813018 Title: Kernel Oops - unable to handle kernel paging request; RIP is at wait_migrate_huge_page+0x51/0x70 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813018/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
