On 06.06.2016 05:57, Herbert Xu wrote: > On Sat, Jun 04, 2016 at 09:35:27AM +0200, Phil Sutter wrote: >> [Cc'ing other interested parties, therefore full-quoting.] >> >> Hi Helge, >> >> On Fri, Jun 03, 2016 at 10:22:26PM +0200, Helge Deller wrote: >>> Hi Phil, >>> >>> I'm testing 4.7.0-rc1-64bit on a parisc/hppa machine and get >>> those message with CONFIG_TEST_RHASHTABLE=y. >>> >>> Is this expected/normal ? >> >> No, this shouldn't happen. Can you possibly bisect the issue? > > This reminds me that I do still have to tackle the multi-page > kmalloc issue. This may or may not be the problem here. Enabling > warnings at the kmalloc call should be an easy way to check.
What warnings do you mean specifically? Some specific CONFIG_ option ? I enabled a few debug CONFIG options and get: [ 0.000000] parisc_cache_init: Only equivalent aliasing supported! [ 0.000000] Memory Ranges: [ 0.000000] 0) Start 0x0000000000000000 End 0x000000003fffffff Size 1024 MB [ 0.000000] 1) Start 0x0000000100000000 End 0x00000001ffdfffff Size 4094 MB [ 0.000000] 2) Start 0x0000004040000000 End 0x00000040ffffffff Size 3072 MB [ 0.000000] Total Memory: 8190 MB [ 0.000000] percpu: Embedded 14 pages/cpu @0000000043c64000 s19168 r8192 d29984 u57344 [ 0.000000] SMP: bootstrap CPU ID is 0 [ 0.000000] Built 3 zonelists in Zone order, mobility grouping on. Total pages: 2067975 [ 0.000000] Kernel command line: HOME=/ root=/dev/sda5 pa64_root=sda5 c3k=sda5 c8k_root=sda5 ip=bootp panic_timeout=60 panic=-1 hugepages=100 console=ttyS0 TERM=vt1x [ 0.000000] log_buf_len individual max cpu contribution: 4096 bytes [ 0.000000] log_buf_len total cpu_extra contributions: 126976 bytes [ 0.000000] log_buf_len min size: 131072 bytes [ 0.000000] log_buf_len: 262144 bytes [ 0.000000] early log buf free: 127768(97%) [ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes) [ 0.000000] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) [ 0.000000] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) [ 0.000000] allocated 16781312 bytes of page_ext [ 0.000000] Backtrace: [ 0.000000] [<0000000040313ef4>] __free_pages+0xdc/0xf0 [ 0.000000] [<0000000040112be4>] 0x40112be4 [ 0.000000] [<0000000040119098>] 0x40119098 [ 0.000000] [<0000000040105594>] 0x40105594 [ 0.000000] [<0000000040101458>] 0x40101458 [ 0.000000] [<0000000040213388>] _raw_spin_trylock+0x0/0x58 [ 0.000000] [ 0.000000] [ 0.000000] Bad Address (null pointer deref?): Code=15 regs=0000000040e03640 (Addr=80000492b273b000) [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.7.0-rc2-64bit+ #428 [ 0.000000] task: 0000000040ef08c0 ti: 0000000040e03000 task.ti: 0000000040e03000 [ 0.000000] [ 0.000000] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [ 0.000000] PSW: 00001000000001001111101100001110 Not tainted [ 0.000000] r00-03 000000ff0804fb0e 0000000040d62590 0000000040311328 0000000040e03520 [ 0.000000] r04-07 0000000040cefd90 0000000000000008 00000001437f2000 0000000000000004 [ 0.000000] r08-11 0000000000000000 0000000000000040 0000000000000000 0000000040e10fc0 [ 0.000000] r12-15 00000001437f2020 0000000000000001 0000000000000010 00000001437f9000 [ 0.000000] r16-19 0000000000007000 00000001437f2000 0000000000000009 0000000000000000 [ 0.000000] r20-23 0000000000000001 0000000000000001 0000000000100000 0000000000000cd0 [ 0.000000] r24-27 0000000000000000 00000000001ffcc0 924924924db99c00 0000000040cefd90 [ 0.000000] r28-31 92492492b273b000 0000000040e03610 0000000040e03640 0000000044a6d000 [ 0.000000] sr00-03 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 0.000000] sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [ 0.000000] [ 0.000000] IASQ: 0000000000000000 0000000000000000 IAOQ: 0000000040311330 0000000040311334 [ 0.000000] IIR: 0f8010dc ISR: 0000000012492000 IOR: 80000492b273b000 [ 0.000000] CPU: 0 CR30: 0000000040e03000 CR31: ffffffffffffffff [ 0.000000] ORIG_R28: 0000000040cefd90 [ 0.000000] IAOQ[0]: __free_pages_ok+0x9a0/0xd28 [ 0.000000] IAOQ[1]: __free_pages_ok+0x9a4/0xd28 [ 0.000000] RP(r2): __free_pages_ok+0x998/0xd28 [ 0.000000] Backtrace: [ 0.000000] [<0000000040313ef4>] __free_pages+0xdc/0xf0 [ 0.000000] [<0000000040112be4>] 0x40112be4 [ 0.000000] [<0000000040119098>] 0x40119098 [ 0.000000] [<0000000040105594>] 0x40105594 [ 0.000000] [<0000000040101458>] 0x40101458 [ 0.000000] [<0000000040213388>] _raw_spin_trylock+0x0/0x58 Helge
