Hello! Trying to boot latest git kernel 4.14.0-12995-g0c86a6bd85ff does not boot on my sparc64 LDOM [1], kernel config [2]. If I revert latest git sparc tree merge, with $ git show 1deab8ce2c91e3b16563b7a7ea150f82334262ec --oneline 1deab8ce2c91 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc mator@ttip:linux-2.6$ git revert -n -m 1 1deab8ce2c91e3b16563b7a7ea150f82334262ec it is able to boot successfully. Can you please teach me on how to git bisect merge commit? Thanks. [1]. http://paste.debian.net/plain/997067 [2]. http://paste.debian.net/plain/997071 LDOM console boot log (first 100 lines. Full log in the URL[1] above): Loading Linux 4.14.0-12995-g0c86a6bd85ff ... Loading initial ramdisk ... [ 0.000017] PROMLIB: Sun IEEE Boot Prom 'OBP 4.38.8 2017/02/22 13:51' [ 0.000028] PROMLIB: Root node compatible: sun4v [ 0.000070] Linux version 4.14.0-12995-g0c86a6bd85ff (mator@ttip) (gcc version 7.2.0 (Debian 7.2.0-16)) #523 SMP Wed Nov 22 18:03:05 MSK 2017 [ 0.000358] bootconsole [earlyprom0] enabled [ 0.000404] ARCH: SUN4V [ 0.000452] Ethernet address: 00:14:4f:fa:06:f2 [ 0.000504] MM: PAGE_OFFSET is 0xfff8000000000000 (max_phys_bits == 47) [ 0.000568] MM: VMALLOC [0x0000000100000000 --> 0x0006000000000000] [ 0.000630] MM: VMEMMAP [0x0006000000000000 --> 0x000c000000000000] [ 0.012719] Kernel: Using 5 locked TLB entries for main kernel image. [ 0.012787] Remapping the kernel... [ 0.012816] done. [ 0.020800] kmemleak: Kernel memory leak detector disabled [ 0.044638] OF stdout device is: /virtual-devices@100/console@1 [ 0.044700] PROM: Built device tree with 74487 bytes of memory. [ 0.044758] MDESC: Size is 30976 bytes. [ 0.044865] PLATFORM: banner-name [SPARC T5-2] [ 0.044912] PLATFORM: name [ORCL,SPARC-T5-2] [ 0.044958] PLATFORM: hostid [84fa06f2] [ 0.044997] PLATFORM: serial# [0035260e] [ 0.045041] PLATFORM: stick-frequency [3b9aca00] [ 0.045086] PLATFORM: mac-address [144ffa06f2] [ 0.045132] PLATFORM: watchdog-resolution [1000 ms] [ 0.045181] PLATFORM: watchdog-max-timeout [31536000000 ms] [ 0.045236] PLATFORM: max-cpus [1024] [ 0.045324] Top of RAM: 0x40bf8b4000, Total RAM: 0x7ff37c000 [ 0.045380] Memory hole size: 232453MB [ 0.168499] Allocated 40960 bytes for kernel page tables. [ 0.168615] Zone ranges: [ 0.168657] Normal [mem 0x0000000040400000-0x00000040bf8b3fff] [ 0.168724] Movable zone start for each node [ 0.168771] Early memory node ranges [ 0.168809] node 0: [mem 0x0000000040400000-0x000000007febffff] [ 0.168869] node 0: [mem 0x000000007ff40000-0x000000007ff47fff] [ 0.168927] node 0: [mem 0x0000000080000000-0x000000077fffffff] [ 0.168988] node 0: [mem 0x0000002000000000-0x000000202fffffff] [ 0.169045] node 0: [mem 0x0000004030000000-0x00000040bf8b3fff] [ 0.169107] Initmem setup node 0 [mem 0x0000000040400000-0x00000040bf8b3fff] [ 0.169200] Unable to handle kernel NULL pointer dereference [ 0.169258] tsk->{mm,active_mm}->context = 0000000000000000 [ 0.169311] tsk->{mm,active_mm}->pgd = fff8004030002000 [ 0.169364] \|/ ____ \|/ [ 0.169364] "@'/ .. \`@" [ 0.169364] /_| \__/ |_\ [ 0.169364] \__U_/ [ 0.169488] swapper(0): Oops [#1] [ 0.169535] CPU: 0 PID: 0 Comm: swapper Not tainted 4.14.0-12995-g0c86a6bd85ff #523 [ 0.169607] task: 0000000000c06c80 task.stack: 0000000000be8000 [ 0.169663] TSTATE: 0000000080e01600 TPC: 00000000009f8c04 TNPC: 00000000009f8c08 Y: 0000000f Not tainted [ 0.169756] TPC: <minmax_running_max+0x4/0xa0> [ 0.169801] g0: 0000000000000000 g1: 0000000001fb4000 g2: 0000000000080000 g3: 0000000001512730 [ 0.169879] g4: 0000000000c06c80 g5: 0000000000000000 g6: 0000000000be8000 g7: 0000000000d16400 [ 0.169957] o0: 0000000000cac148 o1: 0000000000b701f0 o2: 00000000014c8970 o3: 0000000000000000 [ 0.170037] o4: 000000000000000e o5: 00000000014b9c00 sp: 0000000000beb0b1 ret_pc: 00000000004cfc74 [ 0.170121] RPC: <lockdep_init_map+0x14/0x40> [ 0.170166] l0: 000000000000000e l1: 0000000000c29c00 l2: 0000000000000000 l3: 0000000000000002 [ 0.170243] l4: 000000000000002d l5: 000000000000000c l6: 000000000000001b l7: 0000000000c571d0 [ 0.171323] i0: 0000000000000018 i1: 0000000000b701f0 i2: 00000000014c8970 i3: 0000000000000000 [ 0.171400] i4: 000000000000000e i5: 00000000c0000000 i6: 0000000000beb171 i7: 00000000005cd34c [ 0.171482] I7: <zone_batchsize.isra.7+0x4c/0x80> [ 0.171528] Call Trace: [ 0.171560] [00000000005cd34c] zone_batchsize.isra.7+0x4c/0x80 [ 0.171620] [0000000000cfb8f8] free_area_init_node+0x4ac/0x51c [ 0.171681] [0000000000cdc968] free_area_init_nodes+0x548/0x574 [ 0.171744] [0000000000ccef1c] paging_init+0xf7c/0xf98 [ 0.171796] [0000000000cc96bc] setup_arch+0x284/0x708 [ 0.171848] [0000000000cc6718] start_kernel+0x60/0x4c8 [ 0.171900] [0000000000cc9394] start_early_boot+0x2c8/0x2d8 [ 0.171958] [0000000000a08500] tlb_fixup_done+0x4c/0x6c [ 0.172011] [000000000011d8a4] 0x11d8a4 [ 0.172053] Disabling lock debugging due to kernel taint [ 0.172103] Caller[00000000005cd34c]: zone_batchsize.isra.7+0x4c/0x80 [ 0.172162] Caller[0000000000cfb8f8]: free_area_init_node+0x4ac/0x51c [ 0.172223] Caller[0000000000cdc968]: free_area_init_nodes+0x548/0x574 [ 0.172282] Caller[0000000000ccef1c]: paging_init+0xf7c/0xf98 [ 0.172335] Caller[0000000000cc96bc]: setup_arch+0x284/0x708 [ 0.172388] Caller[0000000000cc6718]: start_kernel+0x60/0x4c8 [ 0.172443] Caller[0000000000cc9394]: start_early_boot+0x2c8/0x2d8 [ 0.172499] Caller[0000000000a08500]: tlb_fixup_done+0x4c/0x6c [ 0.172553] Caller[000000000011d8a4]: 0x11d8a4 [ 0.172597] Instruction DUMP: [ 0.172600] 01000000 [ 0.172632] 01000000 [ 0.172658] 9de3bf40 [ 0.172685] <c2062004> [ 0.172712] f627a7fb [ 0.172737] 80a0401b [ 0.172764] 08400007 [ 0.172792] f427a7f7 [ 0.172818] c2062010 [ 0.172845] [ 0.172890] Kernel panic - not syncing: Attempted to kill the idle task! [ 0.173132] Unable to handle kernel NULL pointer dereference [ 0.173186] tsk->{mm,active_mm}->context = 0000000000000000 [ 0.173238] tsk->{mm,active_mm}->pgd = fff8004030002000 -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
