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Ppcroj9LkC7lTvJluYWpcj4iud1twoP62TVjN+n7gnexTWyENjstYnpDl3zCR9MafoQhkJtA3sOt6Ojn/bGStg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR11MB4740 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "UBSAN:shift-out-of-bounds_in_kernel/trace/ftrace.c" on: commit: 0ae6b8ce200da00a78f33c055fdc4fe3225d22ec ("ftrace: Fix accounting of subop hashes") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master 8ffd015db85fea3e15a77027fda6c02ced4d2444] [test failed on linux-next/master b425262c07a6a643ebeed91046e161e20b944164] in testcase: boot config: x86_64-rhel-9.4-kunit 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) +--------------------------------------------------------------------------------------+------------+------------+ | | 04a80a34c2 | 0ae6b8ce20 | +--------------------------------------------------------------------------------------+------------+------------+ | boot_successes | 27 | 0 | | boot_failures | 0 | 30 | | UBSAN:shift-out-of-bounds_in_kernel/trace/ftrace.c | 0 | 30 | | Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN_PTI | 0 | 30 | | KASAN:maybe_wild-memory-access_in_range[#-#] | 0 | 30 | | RIP:__ftrace_hash_move | 0 | 30 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 30 | +--------------------------------------------------------------------------------------+------------+------------+ 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/202504172247.26db367d-lkp@intel.com [ 12.139798][ T1] ------------[ cut here ]------------ [ 12.140960][ T1] UBSAN: shift-out-of-bounds in kernel/trace/ftrace.c:1426:11 [ 12.142488][ T1] shift exponent 51870560556424975 is too large for 32-bit type 'int' [ 12.143262][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.15.0-rc1-00004-g0ae6b8ce200d #1 PREEMPT(voluntary) [ 12.143266][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 12.143266][ T1] Call Trace: [ 12.143266][ T1] [ 12.143266][ T1] dump_stack_lvl (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/lib/dump_stack.c:123 (discriminator 1)) [ 12.143266][ T1] __ubsan_handle_shift_out_of_bounds (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/lib/ubsan.c:232 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/lib/ubsan.c:492) [ 12.143266][ T1] ? __pfx_mutex_unlock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:534) [ 12.143266][ T1] __ftrace_hash_move.cold (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:1426 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:1449) [ 12.143266][ T1] ? kasan_save_track (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/arch/x86/include/asm/current.h:25 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/mm/kasan/common.c:60 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/mm/kasan/common.c:69) [ 12.143266][ T1] ? mutex_unlock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/instrumented.h:96 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/atomic/atomic-instrumented.h:4479 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:166 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:536) [ 12.143266][ T1] ? __kasan_kmalloc (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/mm/kasan/common.c:377 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/mm/kasan/common.c:394) [ 12.143266][ T1] ? alloc_and_copy_ftrace_hash (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:1198 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:1377) [ 12.143266][ T1] ? __pfx_mutex_unlock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:534) [ 12.143266][ T1] __ftrace_hash_move_and_update_ops (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:1483 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:3364) [ 12.143266][ T1] ? __pfx_mutex_unlock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:534) [ 12.143266][ T1] ftrace_update_ops (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:3387) [ 12.143266][ T1] ? __pfx_mutex_unlock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:534) [ 12.143266][ T1] ftrace_startup_subops (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:3566) [ 12.143266][ T1] ? __SCT__fgraph_func (??:?) [ 12.143266][ T1] ? __pfx_ftrace_startup_subops (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:3492) [ 12.143266][ T1] ? __pfx_mutex_unlock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:534) [ 12.143266][ T1] ? __pfx_store_entry (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace_selftest.c:781) [ 12.143266][ T1] register_ftrace_graph (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/fgraph.c:1385) [ 12.143266][ T1] ? ftrace_set_regex (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:6251) [ 12.143266][ T1] ? __pfx_register_ftrace_graph (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/fgraph.c:1322) [ 12.143266][ T1] ? __pfx_ftrace_set_regex (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:6228) [ 12.143266][ T1] test_graph_storage (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace_selftest.c:966 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace_selftest.c:1014) [ 12.143266][ T1] trace_selftest_startup_function_graph (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace_selftest.c:1181) [ 12.143266][ T1] ? __pfx_trace_selftest_startup_function_graph (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace_selftest.c:1064) [ 12.143266][ T1] ? __pfx_tracing_reset_online_cpus (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace.c:2354) [ 12.143266][ T1] ? mutex_lock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/arch/x86/include/asm/atomic64_64.h:101 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/atomic/atomic-arch-fallback.h:4296 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/atomic/atomic-long.h:1482 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/atomic/atomic-instrumented.h:4458 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:156 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:276) [ 12.143266][ T1] ? __pfx_mutex_lock (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/locking/mutex.c:273) [ 12.143266][ T1] run_tracer_selftest (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace.c:2152 (discriminator 1)) [ 12.143266][ T1] register_tracer (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace.c:2190 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace.c:2306) [ 12.143266][ T1] ? __pfx_init_graph_trace (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/trace_functions_graph.c:1731) [ 12.143266][ T1] do_one_initcall (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1257) [ 12.143266][ T1] ? __pfx_do_one_initcall (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1248) [ 12.143266][ T1] ? __pfx_parse_args (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/params.c:168) [ 12.143266][ T1] ? __kmalloc_noprof (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/kasan.h:260 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/mm/slub.c:4331 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/mm/slub.c:4343) [ 12.143266][ T1] ? do_initcalls (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/slab.h:909 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/include/linux/slab.h:1039 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1328) [ 12.143266][ T1] do_initcalls (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1318 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1335) [ 12.143266][ T1] kernel_init_freeable (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1569) [ 12.143266][ T1] ? __pfx_kernel_init (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1449) [ 12.143266][ T1] kernel_init (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1459) [ 12.143266][ T1] ? calculate_sigpending (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/signal.c:194) [ 12.143266][ T1] ret_from_fork (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/arch/x86/kernel/process.c:159) [ 12.143266][ T1] ? __pfx_kernel_init (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/init/main.c:1449) [ 12.143266][ T1] ret_from_fork_asm (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/arch/x86/entry/entry_64.S:258) [ 12.143266][ T1] [ 12.177300][ T1] ---[ end trace ]--- [ 12.177951][ T1] Oops: general protection fault, probably for non-canonical address 0xeabbfbff80000000: 0000 [#1] SMP KASAN PTI [ 12.178266][ T1] KASAN: maybe wild-memory-access in range [0x55dffffc00000000-0x55dffffc00000007] [ 12.178266][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.15.0-rc1-00004-g0ae6b8ce200d #1 PREEMPT(voluntary) [ 12.178266][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 [ 12.178266][ T1] RIP: 0010:__ftrace_hash_move (kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:1429 kbuild/obj/consumer/x86_64-rhel-9.4-kunit/kernel/trace/ftrace.c:1449) [ 12.178266][ T1] Code: 49 01 e9 49 89 c2 49 89 fc 48 8b 44 24 08 48 c1 e8 03 80 3c 28 00 0f 85 b8 05 00 00 49 8b 5f 08 4c 01 f3 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 81 05 00 00 4c 8b 1b 4d 85 db 0f 84 90 01 00 00 All code ======== 0: 49 01 e9 add %rbp,%r9 3: 49 89 c2 mov %rax,%r10 6: 49 89 fc mov %rdi,%r12 9: 48 8b 44 24 08 mov 0x8(%rsp),%rax e: 48 c1 e8 03 shr $0x3,%rax 12: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 16: 0f 85 b8 05 00 00 jne 0x5d4 1c: 49 8b 5f 08 mov 0x8(%r15),%rbx 20: 4c 01 f3 add %r14,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax 2a:* 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction 2e: 0f 85 81 05 00 00 jne 0x5b5 34: 4c 8b 1b mov (%rbx),%r11 37: 4d 85 db test %r11,%r11 3a: 0f 84 90 01 00 00 je 0x1d0 Code starting with the faulting instruction =========================================== 0: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 4: 0f 85 81 05 00 00 jne 0x58b a: 4c 8b 1b mov (%rbx),%r11 d: 4d 85 db test %r11,%r11 10: 0f 84 90 01 00 00 je 0x1a6 The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250417/202504172247.26db367d-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki