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X-MS-Exchange-Transport-CrossTenantHeadersStamped: CYYPR11MB8331 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "BUG:KASAN:slab-use-after-free_in_raw_spin_lock_irq" on: commit: de4b59d652646cf00cf632174348ca2266099edc ("locking/lockdep: Add kasan_check_byte() check in lock_acquire()") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master afa9a6f4f5744d907954f5b708d76c9bffa43234] [test failed on linux-next/master 2aeda9592360c200085898a258c4754bfe879921] in testcase: trinity version: with following parameters: runtime: 600s config: x86_64-randconfig-104-20250415 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) the issue does not always happen. 23 times out of 142 runs as below. parent keeps clean. ee57ab5a32129f59 de4b59d652646cf00cf63217434 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | :142 16% 23:142 dmesg.BUG:KASAN:slab-use-after-free_in_raw_spin_lock_irq 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/202506300447.102c9e45-lkp@intel.com [ 154.326222][ T1658] BUG: KASAN: slab-use-after-free in _raw_spin_lock_irq (include/linux/spinlock_api_smp.h:120 kernel/locking/spinlock.c:170) [ 154.327485][ T1658] Read of size 1 at addr ffff888101655868 by task trinity-c3/1658 [ 154.328688][ T1658] [ 154.329089][ T1658] CPU: 0 UID: 536870912 PID: 1658 Comm: trinity-c3 Tainted: G T 6.14.0-rc5-00228-gde4b59d65264 #1 [ 154.330915][ T1658] Tainted: [T]=RANDSTRUCT [ 154.331547][ T1658] Call Trace: [ 154.332090][ T1658] [ 154.332553][ T1658] dump_stack_lvl (lib/dump_stack.c:123) [ 154.333291][ T1658] print_address_description+0x8a/0x34b [ 154.334384][ T1658] print_report (mm/kasan/report.c:522) [ 154.335159][ T1658] ? __virt_addr_valid (arch/x86/mm/physaddr.c:66) [ 154.335979][ T1658] ? _raw_spin_lock_irq (include/linux/spinlock_api_smp.h:120 kernel/locking/spinlock.c:170) [ 154.336775][ T1658] kasan_report (mm/kasan/report.c:636) [ 154.337475][ T1658] ? _raw_spin_lock_irq (include/linux/spinlock_api_smp.h:120 kernel/locking/spinlock.c:170) [ 154.338283][ T1658] ? _raw_spin_lock_irq (include/linux/spinlock_api_smp.h:120 kernel/locking/spinlock.c:170) [ 154.339112][ T1658] ? __wait_for_common (kernel/sched/completion.c:84 kernel/sched/completion.c:116) [ 154.339920][ T1658] __kasan_check_byte (mm/kasan/common.c:561) [ 154.340707][ T1658] lock_acquire (include/trace/events/lock.h:24 include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) [ 154.341554][ T1658] ? pci_mmcfg_reserved (kernel/sched/core.c:6646) [ 154.342337][ T1658] ? __sanitizer_cov_trace_pc (kernel/kcov.c:217) [ 154.343252][ T1658] ? irq_trace (kernel/trace/trace_irqsoff.c:59 (discriminator 6)) [ 154.343968][ T1658] ? write_comp_data (kernel/kcov.c:246) [ 154.344741][ T1658] ? usleep_range_state (kernel/time/sleep_timeout.c:62) [ 154.345597][ T1658] _raw_spin_lock_irq (include/linux/spinlock_api_smp.h:120 kernel/locking/spinlock.c:170) [ 154.346429][ T1658] ? __wait_for_common (kernel/sched/completion.c:84 kernel/sched/completion.c:116) [ 154.347266][ T1658] __wait_for_common (kernel/sched/completion.c:84 kernel/sched/completion.c:116) [ 154.348111][ T1658] ? _printk (kernel/printk/printk.c:2452) [ 154.348825][ T1658] ? out_of_line_wait_on_bit_lock (kernel/sched/completion.c:110) [ 154.349775][ T1658] wait_for_completion_state (kernel/sched/completion.c:268) [ 154.350731][ T1658] kmod_dup_request_exists_wait (kernel/module/dups.c:210) [ 154.351725][ T1658] ? inet_create (net/ipv4/af_inet.c:1382) [ 154.352749][ T1658] __request_module (kernel/module/kmod.c:167) [ 154.353587][ T1658] ? free_modprobe_argv (kernel/module/kmod.c:132) [ 154.354406][ T1658] ? mark_lock (kernel/locking/lockdep.c:4726 (discriminator 3)) [ 154.355134][ T1658] ? __lock_acquire (kernel/locking/lockdep.c:5235) [ 154.355920][ T1658] ? rcu_read_unlock (include/linux/rcupdate.h:347 include/linux/rcupdate.h:880) [ 154.356711][ T1658] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 154.357535][ T1658] ? local_clock_noinstr (kernel/sched/clock.c:301) [ 154.358370][ T1658] ? __lock_release+0xc0/0x16f [ 154.358993][ T1658] ? inet_create (net/ipv4/af_inet.c:1382) [ 154.359749][ T1658] inet_create (net/ipv4/af_inet.c:1382) [ 154.360375][ T1658] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 154.360824][ T1658] inet_create (net/ipv4/af_inet.c:266) [ 154.361197][ T1658] ? rcu_read_unlock (include/linux/rcupdate.h:878) [ 154.361659][ T1658] __sock_create (net/socket.c:1549) [ 154.362058][ T1658] __sys_socket_create (net/socket.c:1644) [ 154.362599][ T1658] ? sock_create (net/socket.c:1629) [ 154.363222][ T1658] ? rcu_read_unlock (include/linux/rcupdate.h:347 include/linux/rcupdate.h:880) [ 154.363796][ T1658] __sys_socket (net/socket.c:1692) [ 154.364376][ T1658] __x64_sys_socket (net/socket.c:1702) [ 154.364848][ T1658] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 154.365258][ T1658] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4663) [ 154.366074][ T1658] ? syscall_exit_to_user_mode (include/linux/entry-common.h:362 kernel/entry/common.c:220) [ 154.366845][ T1658] ? do_syscall_64 (arch/x86/entry/common.c:102) [ 154.367412][ T1658] ? rcu_read_unlock (include/linux/rcupdate.h:347 include/linux/rcupdate.h:880) [ 154.367834][ T1658] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 154.368274][ T1658] ? local_clock_noinstr (kernel/sched/clock.c:301) [ 154.368702][ T1658] ? local_clock (arch/x86/include/asm/preempt.h:84 kernel/sched/clock.c:316) [ 154.369074][ T1658] ? __lock_release+0xc0/0x16f [ 154.369792][ T1658] ? __sanitizer_cov_trace_pc (kernel/kcov.c:217) [ 154.370652][ T1658] ? __sanitizer_cov_trace_pc (kernel/kcov.c:217) [ 154.371504][ T1658] ? irq_trace (kernel/trace/trace_irqsoff.c:59 (discriminator 6)) [ 154.372218][ T1658] ? write_comp_data (kernel/kcov.c:246) [ 154.372976][ T1658] ? tracer_hardirqs_on (kernel/trace/trace_irqsoff.c:630) [ 154.373837][ T1658] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4663) [ 154.374908][ T1658] ? syscall_exit_to_user_mode (include/linux/entry-common.h:362 kernel/entry/common.c:220) [ 154.375824][ T1658] ? do_syscall_64 (arch/x86/entry/common.c:102) [ 154.376619][ T1658] ? __sanitizer_cov_trace_pc (kernel/kcov.c:217) [ 154.377531][ T1658] ? __sanitizer_cov_trace_pc (kernel/kcov.c:217) [ 154.378445][ T1658] ? irq_trace (kernel/trace/trace_irqsoff.c:59 (discriminator 6)) [ 154.379157][ T1658] ? write_comp_data (kernel/kcov.c:246) [ 154.379923][ T1658] ? tracer_hardirqs_on (kernel/trace/trace_irqsoff.c:630) [ 154.380723][ T1658] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4663) [ 154.381723][ T1658] ? syscall_exit_to_user_mode (include/linux/entry-common.h:362 kernel/entry/common.c:220) [ 154.382608][ T1658] ? do_syscall_64 (arch/x86/entry/common.c:102) [ 154.383220][ T1658] ? rcu_read_unlock (include/linux/rcupdate.h:347 include/linux/rcupdate.h:880) [ 154.383811][ T1658] ? kvm_sched_clock_read (arch/x86/kernel/kvmclock.c:91) [ 154.384524][ T1658] ? local_clock_noinstr (kernel/sched/clock.c:301) [ 154.385261][ T1658] ? local_clock (arch/x86/include/asm/preempt.h:84 kernel/sched/clock.c:316) [ 154.385979][ T1658] ? __lock_release+0xc0/0x16f [ 154.386876][ T1658] ? __sanitizer_cov_trace_pc (kernel/kcov.c:217) [ 154.387784][ T1658] ? __sanitizer_cov_trace_pc (kernel/kcov.c:217) [ 154.388666][ T1658] ? irq_trace (kernel/trace/trace_irqsoff.c:59 (discriminator 6)) [ 154.389383][ T1658] ? write_comp_data (kernel/kcov.c:246) [ 154.390168][ T1658] ? tracer_hardirqs_on (kernel/trace/trace_irqsoff.c:630) [ 154.390997][ T1658] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4663) [ 154.392108][ T1658] ? syscall_exit_to_user_mode (include/linux/entry-common.h:362 kernel/entry/common.c:220) [ 154.393047][ T1658] ? clear_bhb_loop (arch/x86/entry/entry_64.S:1538) [ 154.393829][ T1658] ? clear_bhb_loop (arch/x86/entry/entry_64.S:1538) [ 154.394600][ T1658] ? clear_bhb_loop (arch/x86/entry/entry_64.S:1538) [ 154.395191][ T1658] ? clear_bhb_loop (arch/x86/entry/entry_64.S:1538) [ 154.395845][ T1658] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 154.396678][ T1658] RIP: 0033:0x463519 [ 154.397279][ T1658] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db 59 00 00 c3 66 2e 0f 1f 84 00 00 00 00 All code ======== 0: 00 f3 add %dh,%bl 2: c3 ret 3: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) a: 00 00 00 d: 0f 1f 40 00 nopl 0x0(%rax) 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 0f 83 db 59 00 00 jae 0x5a11 36: c3 ret 37: 66 data16 38: 2e cs 39: 0f .byte 0xf 3a: 1f (bad) 3b: 84 00 test %al,(%rax) 3d: 00 00 add %al,(%rax) ... Code starting with the faulting instruction =========================================== 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 0f 83 db 59 00 00 jae 0x59e7 c: c3 ret d: 66 data16 e: 2e cs f: 0f .byte 0xf 10: 1f (bad) 11: 84 00 test %al,(%rax) 13: 00 00 add %al,(%rax) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250630/202506300447.102c9e45-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki