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X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Dec 2023 14:19:52.9090 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Eb66wgwMoLuFszI13/4GY+9cF6+o2PamGMm4JwDkMe4LIqLi/V4PxRczVbPjMa542v/HKqkFsS7Dp/aPD2H/Ig== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW5PR11MB5811 X-OriginatorOrg: intel.com Hello, we reported "[tip:perf/urgent] [perf] 382c27f4ed: WARNING:at_kernel/events/core.c:#__do_sys_perf_event_open" in https://lore.kernel.org/all/202312052248.1270bdba-oliver.sang@intel.com/ when this commit is commit: 382c27f4ed28f803b1f1473ac2d8db0afc795a1b ("perf: Fix perf_event_validate_size()") https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git perf/urgent now we noticed it is merged into mainline, and observed below issue FYI. kernel test robot noticed "WARNING:at_kernel/events/core.c:#perf_event_validate_size" on: commit: 382c27f4ed28f803b1f1473ac2d8db0afc795a1b ("perf: Fix perf_event_validate_size()") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master 26aff849438cebcd05f1a647390c4aa700d5c0f1] [test failed on linux-next/master abb240f7a2bd14567ab53e602db562bb683391e6] in testcase: trinity version: trinity-i386-abe9de86-1_20230429 with following parameters: runtime: 300s group: group-00 nr_groups: 5 test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ compiler: gcc-12 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (please refer to attached dmesg/kmsg for entire log/backtrace) +-----------------------------------------------------------+----------+------------+ | | v6.7-rc3 | 382c27f4ed | +-----------------------------------------------------------+----------+------------+ | WARNING:at_kernel/events/core.c:#perf_event_validate_size | 0 | 12 | | RIP:perf_event_validate_size | 0 | 12 | +-----------------------------------------------------------+----------+------------+ 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/202312122135.dcf51112-oliver.sang@intel.com [ 180.010094][ T3401] ------------[ cut here ]------------ [ 180.010717][ T3401] WARNING: CPU: 0 PID: 3401 at kernel/events/core.c:1950 perf_event_validate_size (kernel/events/core.c:1950 (discriminator 31)) [ 180.011699][ T3401] Modules linked in: floppy evbug qemu_fw_cfg fuse [ 180.012385][ T3401] CPU: 0 PID: 3401 Comm: trinity-main Not tainted 6.7.0-rc3-00001-g382c27f4ed28 #1 934d94ae775b173a8bcc12c6e74f54b31bec9e32 [ 180.013690][ T3401] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 180.014751][ T3401] RIP: 0010:perf_event_validate_size (kernel/events/core.c:1950 (discriminator 31)) [ 180.015371][ T3401] Code: e8 1a cd 73 02 31 f6 48 c7 c7 50 ac 16 86 83 f8 01 89 c3 40 0f 95 c6 31 c9 31 d2 e8 bf e8 f6 ff 83 fb 01 0f 84 83 fe ff ff 90 <0f> 0b 90 be 01 00 00 00 e9 77 fe ff ff 4c 89 f7 e8 60 b2 1d 00 e9 All code ======== 0: e8 1a cd 73 02 call 0x273cd1f 5: 31 f6 xor %esi,%esi 7: 48 c7 c7 50 ac 16 86 mov $0xffffffff8616ac50,%rdi e: 83 f8 01 cmp $0x1,%eax 11: 89 c3 mov %eax,%ebx 13: 40 0f 95 c6 setne %sil 17: 31 c9 xor %ecx,%ecx 19: 31 d2 xor %edx,%edx 1b: e8 bf e8 f6 ff call 0xfffffffffff6e8df 20: 83 fb 01 cmp $0x1,%ebx 23: 0f 84 83 fe ff ff je 0xfffffffffffffeac 29: 90 nop 2a:* 0f 0b ud2 <-- trapping instruction 2c: 90 nop 2d: be 01 00 00 00 mov $0x1,%esi 32: e9 77 fe ff ff jmp 0xfffffffffffffeae 37: 4c 89 f7 mov %r14,%rdi 3a: e8 60 b2 1d 00 call 0x1db29f 3f: e9 .byte 0xe9 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 90 nop 3: be 01 00 00 00 mov $0x1,%esi 8: e9 77 fe ff ff jmp 0xfffffffffffffe84 d: 4c 89 f7 mov %r14,%rdi 10: e8 60 b2 1d 00 call 0x1db275 15: e9 .byte 0xe9 [ 180.017292][ T3401] RSP: 0018:ffffc90002abfd10 EFLAGS: 00010297 [ 180.017871][ T3401] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 180.018648][ T3401] RDX: 1ffffffff0c2d58e RSI: 0000000000000001 RDI: ffffffff8616ac70 [ 180.019419][ T3401] RBP: ffffc90002abfd30 R08: 0000000000000001 R09: fffffbfff0dffeff [ 180.020209][ T3401] R10: ffffffff86fff7ff R11: ffff8881563f88e2 R12: ffff888157f3b040 [ 180.020959][ T3401] R13: 0000000000000001 R14: ffff888157f3b0c0 R15: fffffffffffffff9 [ 180.021788][ T3401] FS: 0000000000000000(0000) GS:ffffffff852df000(0063) knlGS:00000000f7edb280 [ 180.022713][ T3401] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 180.023413][ T3401] CR2: 0000000057cff06c CR3: 000000015654e000 CR4: 00000000000406f0 [ 180.024212][ T3401] Call Trace: [ 180.024558][ T3401] [ 180.024869][ T3401] ? show_regs (arch/x86/kernel/dumpstack.c:479) [ 180.025372][ T3401] ? __warn (kernel/panic.c:677) [ 180.025795][ T3401] ? perf_event_validate_size (kernel/events/core.c:1950 (discriminator 31)) [ 180.026407][ T3401] ? report_bug (lib/bug.c:180 lib/bug.c:219) [ 180.026866][ T3401] ? handle_bug (arch/x86/kernel/traps.c:237) [ 180.027322][ T3401] ? exc_invalid_op (arch/x86/kernel/traps.c:258 (discriminator 1)) [ 180.027797][ T3401] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:568) [ 180.028342][ T3401] ? perf_event_validate_size (kernel/events/core.c:1950 (discriminator 31)) [ 180.028931][ T3401] __do_sys_perf_event_open (kernel/events/core.c:12655) [ 180.029576][ T3401] ? __pfx___do_sys_perf_event_open (kernel/events/core.c:12391) [ 180.030215][ T3401] ? __lock_release+0x10a/0x580 [ 180.030741][ T3401] ? __ct_user_exit (kernel/context_tracking.c:623) [ 180.031295][ T3401] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4567) [ 180.031960][ T3401] ? syscall_enter_from_user_mode_prepare (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:77 kernel/entry/common.c:122) [ 180.032669][ T3401] __ia32_sys_perf_event_open (kernel/events/core.c:12388) [ 180.033281][ T3401] __do_fast_syscall_32 (arch/x86/entry/common.c:164 arch/x86/entry/common.c:230) [ 180.033807][ T3401] do_fast_syscall_32 (arch/x86/entry/common.c:255) [ 180.034360][ T3401] do_SYSENTER_32 (arch/x86/entry/common.c:294) [ 180.034816][ T3401] entry_SYSENTER_compat_after_hwframe (arch/x86/entry/entry_64_compat.S:121) [ 180.035486][ T3401] RIP: 0023:0xf7ee0589 [ 180.035922][ T3401] Code: 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 All code ======== 0: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi ... 20:* 00 51 52 add %dl,0x52(%rcx) <-- trapping instruction 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 2a: 5d pop %rbp 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop Code starting with the faulting instruction =========================================== 0: 5d pop %rbp 1: 5a pop %rdx 2: 59 pop %rcx 3: c3 ret 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20231212/202312122135.dcf51112-oliver.sang@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki