Hi,
On 05/08/2024 19:48, Kees Cook wrote:
This seems like some kind of pre-existing issue in the igt test, reachable
via eb_copy_relocations(). The only warning in kvmalloc_node_noprof() is:
/* Don't even allow crazy sizes */
if (unlikely(size > INT_MAX)) {
WARN_ON_ONCE(!(flags & __GFP_NOWARN));
return NULL;
}
So, something is too big in the test?
Yes, and I think it was reported before, _and_ I tried to fix it..
(https://patchwork.freedesktop.org/patch/594928/?series=133871&rev=1) It
looks it fell through the cracks. Now pushed, thank you for reviews!
Regards,
Tvrtko
-Kees
On Sun, Aug 04, 2024 at 04:56:40PM +0800, kernel test robot wrote:
hi, Kees Cook,
as we understand, this commit is not the root cause of WARNING. the WARNING just
changes the form from (2) to (1) due to this commit.
67f2df3b82d091ed 2e8000b826fcd2716449d09753d
---------------- ---------------------------
fail:runs %reproduction fail:runs
| | |
:6 100% 6:6 dmesg.WARNING:at_mm/util.c:#__kvmalloc_node_noprof <--- (1)
6:6 -67% :6 dmesg.WARNING:at_mm/util.c:#kvmalloc_node_noprof <--- (2)
however, we failed to bisect (2). so below report is FYI what we observed in our
tests. not sure if it can give any hint to some real issues.
Hello,
kernel test robot noticed "WARNING:at_mm/util.c:#__kvmalloc_node_noprof" on:
commit: 2e8000b826fcd2716449d09753d5ed843067881e ("mm/slab: Introduce kvmalloc_buckets_node() that can take kmem_buckets argument")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master 786c8248dbd33a5a7a07f7c6e55a7bfc68d2ca48]
[test failed on linux-next/master 9ec6ec93f2c1e6cd2911e2a4acd5ac85e13bb3e2]
in testcase: igt
version: igt-x86_64-73e21b2bb-1_20240623
with following parameters:
group: gem_exec_reloc
compiler: gcc-13
test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (Kaby Lake) with 32G memory
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202408041614.dbe4b7fd-lkp@xxxxxxxxx
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240804/202408041614.dbe4b7fd-lkp@xxxxxxxxx
[ 928.741334][ T5136] ------------[ cut here ]------------
[ 928.747005][ T5136] WARNING: CPU: 2 PID: 5136 at mm/util.c:650 __kvmalloc_node_noprof+0x142/0x190
[ 928.755967][ T5136] Modules linked in: btrfs blake2b_generic xor zstd_compress raid6_pq libcrc32c intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal ipmi_devintf ipmi_msghandler sd_mod intel_powerclamp t10_pi coretemp crc64_rocksoft_generic crc64_rocksoft crc64 kvm_intel sg i915 kvm crct10dif_pclmul crc32_pclmul crc32c_intel drm_buddy ghash_clmulni_intel intel_gtt sha512_ssse3 drm_display_helper mei_wdt ttm rapl drm_kms_helper ahci wmi_bmof libahci mei_me video intel_cstate intel_uncore idma64 libata mei i2c_designware_platform i2c_i801 i2c_designware_core i2c_smbus pinctrl_sunrisepoint wmi acpi_pad binfmt_misc loop drm fuse dm_mod ip_tables
[ 928.812981][ T5136] CPU: 2 PID: 5136 Comm: gem_exec_reloc Tainted: G S 6.10.0-rc1-00009-g2e8000b826fc #1
[ 928.823924][ T5136] Hardware name: Dell Inc. OptiPlex 7050/062KRH, BIOS 1.2.0 12/22/2016
[ 928.832080][ T5136] RIP: 0010:__kvmalloc_node_noprof+0x142/0x190
[ 928.838186][ T5136] Code: c4 06 0e 00 48 83 c4 18 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e c3 cc cc cc cc 49 be 00 00 00 00 00 20 00 00 eb 9f 80 e7 20 75 de <0f> 0b eb da 48 c7 c7 f0 fe cf 84 e8 5e 2c 19 00 e9 3f ff ff ff 48
[ 928.857727][ T5136] RSP: 0018:ffffc9000e82f6f8 EFLAGS: 00010246
[ 928.863744][ T5136] RAX: 0000000000000000 RBX: 00000000000000c0 RCX: 0000000000000013
[ 928.871647][ T5136] RDX: 000000000007ffff RSI: ffffffff81a13806 RDI: 0000000000000000
[ 928.879565][ T5136] RBP: 0000000080000000 R08: 0000000000000001 R09: 0000000000000000
[ 928.887466][ T5136] R10: ffffc9000e82f6f8 R11: 0000000000000000 R12: 00000000ffffffff
[ 928.895375][ T5136] R13: 0000000000000000 R14: 0000000004000000 R15: ffffc9000e82f9b0
[ 928.903288][ T5136] FS: 00007f0ff830d8c0(0000) GS:ffff88879db00000(0000) knlGS:0000000000000000
[ 928.912151][ T5136] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 928.918679][ T5136] CR2: 00007f0ff8100000 CR3: 00000008162e0004 CR4: 00000000003706f0
[ 928.926595][ T5136] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 928.934489][ T5136] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 928.942382][ T5136] Call Trace:
[ 928.945631][ T5136] <TASK>
[ 928.948499][ T5136] ? __warn+0xcc/0x260
[ 928.952503][ T5136] ? __kvmalloc_node_noprof+0x142/0x190
[ 928.957994][ T5136] ? report_bug+0x261/0x2c0
[ 928.962429][ T5136] ? handle_bug+0x6d/0x90
[ 928.966692][ T5136] ? exc_invalid_op+0x17/0x40
[ 928.971327][ T5136] ? asm_exc_invalid_op+0x1a/0x20
[ 928.976295][ T5136] ? __kmalloc_node_noprof+0x3b6/0x4e0
[ 928.981709][ T5136] ? __kvmalloc_node_noprof+0x142/0x190
[ 928.987199][ T5136] ? __kvmalloc_node_noprof+0x53/0x190
[ 928.992590][ T5136] eb_copy_relocations+0x166/0x450 [i915]
[ 928.998467][ T5136] eb_relocate_parse_slow+0xd5/0x860 [i915]
[ 929.004513][ T5136] i915_gem_do_execbuffer+0xaa5/0x2420 [i915]
[ 929.010657][ T5136] ? unwind_get_return_address+0x5e/0xa0
[ 929.016135][ T5136] ? arch_stack_walk+0xac/0x100
[ 929.020836][ T5136] ? __pfx_i915_gem_do_execbuffer+0x10/0x10 [i915]
[ 929.027424][ T5136] ? kasan_save_track+0x14/0x30
[ 929.032147][ T5136] ? __kasan_kmalloc+0x8f/0xa0
[ 929.036759][ T5136] ? __pfx___might_resched+0x10/0x10
[ 929.041892][ T5136] ? check_heap_object+0x6f/0x4b0
[ 929.046766][ T5136] i915_gem_execbuffer2_ioctl+0x2b2/0x680 [i915]
[ 929.053171][ T5136] ? __pfx_i915_gem_execbuffer2_ioctl+0x10/0x10 [i915]
[ 929.060100][ T5136] drm_ioctl_kernel+0x16f/0x2e0 [drm]
[ 929.065417][ T5136] ? __pfx_drm_ioctl_kernel+0x10/0x10 [drm]
[ 929.071239][ T5136] drm_ioctl+0x4d0/0xad0 [drm]
[ 929.075948][ T5136] ? __pfx_i915_gem_execbuffer2_ioctl+0x10/0x10 [i915]
[ 929.082882][ T5136] ? __pfx_drm_ioctl+0x10/0x10 [drm]
[ 929.088119][ T5136] ? __fget_light+0x57/0x420
[ 929.092587][ T5136] __x64_sys_ioctl+0x137/0x1b0
[ 929.097212][ T5136] do_syscall_64+0x5f/0x170
[ 929.101572][ T5136] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 929.107321][ T5136] RIP: 0033:0x7f0ffa6b7c5b
[ 929.111603][ T5136] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[ 929.131013][ T5136] RSP: 002b:00007ffda154ae00 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 929.139261][ T5136] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f0ffa6b7c5b
[ 929.147077][ T5136] RDX: 00007ffda154af10 RSI: 0000000040406469 RDI: 0000000000000004
[ 929.154890][ T5136] RBP: 00007ffda154af10 R08: 0000000000000004 R09: 0000000100000000
[ 929.162704][ T5136] R10: 00007f0ffa7a8298 R11: 0000000000000246 R12: 0000000040406469
[ 929.170515][ T5136] R13: 0000000000000004 R14: 00007f0f78200000 R15: 0000000000000002
[ 929.178329][ T5136] </TASK>
[ 929.181207][ T5136] ---[ end trace 0000000000000000 ]---
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
