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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, as we understand, this commit is not the root-cause of this WARNING. the WARNING just shows in another way by commit changes. 53ed0af496422959 7bd230a26648ac68ab3731ebbc4 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | 6:6 -83% :6 dmesg.RIP:kvmalloc_node :6 33% 6:6 dmesg.RIP:kvmalloc_node_noprof 6:6 -83% :6 dmesg.WARNING:at_mm/util.c:#kvmalloc_node :6 33% 6:6 dmesg.WARNING:at_mm/util.c:#kvmalloc_node_noprof but we failed to bisect "dmesg.WARNING:at_mm/util.c:#kvmalloc_node". we still made this report FYI what we observed in our tests, not sure if it could give somebody some hints to find the real problem then judge if a fix is needed. below is full report. kernel test robot noticed "WARNING:at_mm/util.c:#kvmalloc_node_noprof" on: commit: 7bd230a26648ac68ab3731ebbc449090f0ac6a37 ("mm/slab: enable slab allocation tagging for kmalloc and friends") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master 6ba6c795dc73c22ce2c86006f17c4aa802db2a60] in testcase: igt version: igt-x86_64-86712f2ef-1_20240511 with following parameters: group: gem_exec_reloc compiler: gcc-13 test machine: 20 threads 1 sockets (Commet Lake) with 16G 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 | Closes: https://lore.kernel.org/oe-lkp/202405151008.6ddd1aaf-oliver.sang@intel.com [ 940.101700][ T5353] ------------[ cut here ]------------ [ 940.107107][ T5353] WARNING: CPU: 1 PID: 5353 at mm/util.c:649 kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) [ 940.116178][ T5353] Modules linked in: netconsole btrfs blake2b_generic xor zstd_compress intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common raid6_pq libcrc32c x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel sd_mod t10_pi crc64_rocksoft_generic crc64_rocksoft ipmi_devintf crc64 sg ipmi_msghandler kvm crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel i915 sha512_ssse3 sdhci_pci drm_buddy cqhci ahci rapl intel_gtt drm_display_helper sdhci libahci mei_me ttm intel_cstate i2c_designware_platform ppdev intel_uncore intel_wmi_thunderbolt wmi_bmof libata mei i2c_designware_core idma64 drm_kms_helper mmc_core i2c_i801 i2c_smbus intel_pch_thermal parport_pc video parport pinctrl_cannonlake wmi acpi_pad acpi_tad serio_raw binfmt_misc drm fuse loop dm_mod ip_tables [ 940.188041][ T5353] CPU: 1 PID: 5353 Comm: gem_exec_reloc Not tainted 6.9.0-rc4-00085-g7bd230a26648 #1 [ 940.197459][ T5353] RIP: 0010:kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) [ 940.203412][ T5353] Code: 04 a3 0d 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 10 ec af 84 e8 0e a6 18 00 e9 3f ff ff ff 48 All code ======== 0: 04 a3 add $0xa3,%al 2: 0d 00 48 83 c4 or $0xc4834800,%eax 7: 18 48 83 sbb %cl,-0x7d(%rax) a: c4 (bad) b: 08 5b 5d or %bl,0x5d(%rbx) e: 41 5c pop %r12 10: 41 5d pop %r13 12: 41 5e pop %r14 14: c3 retq 15: cc int3 16: cc int3 17: cc int3 18: cc int3 19: 49 be 00 00 00 00 00 movabs $0x200000000000,%r14 20: 20 00 00 23: eb 9f jmp 0xffffffffffffffc4 25: 80 e7 20 and $0x20,%bh 28: 75 de jne 0x8 2a:* 0f 0b ud2 <-- trapping instruction 2c: eb da jmp 0x8 2e: 48 c7 c7 10 ec af 84 mov $0xffffffff84afec10,%rdi 35: e8 0e a6 18 00 callq 0x18a648 3a: e9 3f ff ff ff jmpq 0xffffffffffffff7e 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: eb da jmp 0xffffffffffffffde 4: 48 c7 c7 10 ec af 84 mov $0xffffffff84afec10,%rdi b: e8 0e a6 18 00 callq 0x18a61e 10: e9 3f ff ff ff jmpq 0xffffffffffffff54 15: 48 rex.W [ 940.222971][ T5353] RSP: 0018:ffffc90000b576f8 EFLAGS: 00010246 [ 940.228978][ T5353] RAX: 0000000000000000 RBX: 00000000000000c0 RCX: 0000000000000013 [ 940.236885][ T5353] RDX: 000000000007ffff RSI: 0000000080000000 RDI: 0000000000000000 [ 940.244792][ T5353] RBP: 0000000080000000 R08: 0000000000000001 R09: 0000000000000000 [ 940.252700][ T5353] R10: ffffc90000b576f8 R11: 0000000000000000 R12: 00000000ffffffff [ 940.260626][ T5353] R13: 0000000000000000 R14: 0000000004000000 R15: ffffc90000b579a8 [ 940.268566][ T5353] FS: 00007f2043c5e8c0(0000) GS:ffff8883ee080000(0000) knlGS:0000000000000000 [ 940.277455][ T5353] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 940.283988][ T5353] CR2: 00007f2043b5d000 CR3: 000000022f74a002 CR4: 00000000003706f0 [ 940.291922][ T5353] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 940.299872][ T5353] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 940.307791][ T5353] Call Trace: [ 940.311021][ T5353] [ 940.313926][ T5353] ? __warn (kernel/panic.c:694) [ 940.317930][ T5353] ? kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) [ 940.323187][ T5353] ? report_bug (lib/bug.c:180 lib/bug.c:219) [ 940.327596][ T5353] ? handle_bug (arch/x86/kernel/traps.c:239 (discriminator 1)) [ 940.331835][ T5353] ? exc_invalid_op (arch/x86/kernel/traps.c:260 (discriminator 1)) [ 940.336419][ T5353] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621) [ 940.341348][ T5353] ? kvmalloc_node_noprof (mm/util.c:649 (discriminator 1)) [ 940.346602][ T5353] ? kvmalloc_node_noprof (mm/util.c:640) [ 940.351795][ T5353] eb_copy_relocations (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:1685) i915 [ 940.357636][ T5353] eb_relocate_parse_slow (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:1815) i915 [ 940.363616][ T5353] i915_gem_do_execbuffer (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:1960 drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3466) i915 [ 940.369790][ T5353] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 (discriminator 1)) [ 940.375305][ T5353] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) [ 940.380084][ T5353] ? __pfx_i915_gem_do_execbuffer (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3359) i915 [ 940.386673][ T5353] ? kasan_save_track (arch/x86/include/asm/current.h:49 (discriminator 1) mm/kasan/common.c:60 (discriminator 1) mm/kasan/common.c:69 (discriminator 1)) [ 940.391449][ T5353] ? __kasan_kmalloc (mm/kasan/common.c:370 mm/kasan/common.c:387) [ 940.396121][ T5353] ? __pfx___might_resched (kernel/sched/core.c:10152) [ 940.401339][ T5353] ? check_heap_object (arch/x86/include/asm/bitops.h:206 (discriminator 1) arch/x86/include/asm/bitops.h:238 (discriminator 1) include/asm-generic/bitops/instrumented-non-atomic.h:142 (discriminator 1) include/linux/page-flags.h:527 (discriminator 1) mm/usercopy.c:194 (discriminator 1)) [ 940.406359][ T5353] i915_gem_execbuffer2_ioctl (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3612) i915 [ 940.412769][ T5353] ? __pfx_i915_gem_execbuffer2_ioctl (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3572) i915 [ 940.419658][ T5353] drm_ioctl_kernel (drivers/gpu/drm/drm_ioctl.c:744) drm [ 940.425039][ T5353] ? __pfx_drm_ioctl_kernel (drivers/gpu/drm/drm_ioctl.c:729) drm [ 940.430914][ T5353] drm_ioctl (drivers/gpu/drm/drm_ioctl.c:842) drm [ 940.435660][ T5353] ? __pfx_i915_gem_execbuffer2_ioctl (drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c:3572) i915 [ 940.442610][ T5353] ? __pfx_drm_ioctl (drivers/gpu/drm/drm_ioctl.c:763) drm [ 940.447822][ T5353] ? __fget_light (include/linux/atomic/atomic-arch-fallback.h:479 (discriminator 2) include/linux/atomic/atomic-instrumented.h:50 (discriminator 2) fs/file.c:1145 (discriminator 2)) [ 940.452318][ T5353] __x64_sys_ioctl (fs/ioctl.c:51 fs/ioctl.c:904 fs/ioctl.c:890 fs/ioctl.c:890) [ 940.457008][ T5353] do_syscall_64 (arch/x86/entry/common.c:52 (discriminator 1) arch/x86/entry/common.c:83 (discriminator 1)) [ 940.461440][ T5353] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 940.467236][ T5353] RIP: 0033:0x7f2046007c5b [ 940.471588][ T5353] 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 All code ======== 0: 00 48 89 add %cl,-0x77(%rax) 3: 44 24 18 rex.R and $0x18,%al 6: 31 c0 xor %eax,%eax 8: 48 8d 44 24 60 lea 0x60(%rsp),%rax d: c7 04 24 10 00 00 00 movl $0x10,(%rsp) 14: 48 89 44 24 08 mov %rax,0x8(%rsp) 19: 48 8d 44 24 20 lea 0x20(%rsp),%rax 1e: 48 89 44 24 10 mov %rax,0x10(%rsp) 23: b8 10 00 00 00 mov $0x10,%eax 28: 0f 05 syscall 2a:* 89 c2 mov %eax,%edx <-- trapping instruction 2c: 3d 00 f0 ff ff cmp $0xfffff000,%eax 31: 77 1c ja 0x4f 33: 48 8b 44 24 18 mov 0x18(%rsp),%rax 38: 64 fs 39: 48 rex.W 3a: 2b .byte 0x2b 3b: 04 25 add $0x25,%al 3d: 28 00 sub %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: 89 c2 mov %eax,%edx 2: 3d 00 f0 ff ff cmp $0xfffff000,%eax 7: 77 1c ja 0x25 9: 48 8b 44 24 18 mov 0x18(%rsp),%rax e: 64 fs f: 48 rex.W 10: 2b .byte 0x2b 11: 04 25 add $0x25,%al 13: 28 00 sub %al,(%rax) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20240515/202405151008.6ddd1aaf-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki