CPU: 1 PID: 10026 Comm: udevd Not tainted 6.0.0-rc5-syzkaller-48543-g968c2729e576 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:dev_watchdog+0x9bb/0x9f0 net/sched/sch_generic.c:525 Code: 85 c0 75 49 b0 01 84 c0 74 4a 48 c7 c7 27 c7 ea 8e 48 8b 5d c0 48 89 de 4c 89 f2 4c 8b bd 78 ff ff ff 44 89 f9 e8 c5 2c 35 f6 <0f> 0b 4c 8b 65 b0 e9 9b fc ff ff 8b 3a e8 13 2d 05 f7 e9 bb fc ff ===================================================== BUG: KMSAN: uninit-value in show_iret_regs+0x215/0x230 arch/x86/kernel/dumpstack.c:150 show_iret_regs+0x215/0x230 arch/x86/kernel/dumpstack.c:150 __show_regs+0x31/0xc90 arch/x86/kernel/process_64.c:74 show_regs+0x6e/0xd0 arch/x86/kernel/dumpstack.c:469 __warn+0x242/0x580 kernel/panic.c:621 report_bug+0x7ff/0xa10 lib/bug.c:198 handle_bug+0x41/0x70 arch/x86/kernel/traps.c:316 exc_invalid_op+0x1b/0x50 arch/x86/kernel/traps.c:336 asm_exc_invalid_op+0x1b/0x20 dev_watchdog+0x9bb/0x9f0 net/sched/sch_generic.c:525 call_timer_fn+0x43/0x480 kernel/time/timer.c:1474 expire_timers+0x272/0x610 kernel/time/timer.c:1519 __run_timers+0x5bd/0x8c0 kernel/time/timer.c:1790 run_timer_softirq+0x64/0xe0 kernel/time/timer.c:1803 __do_softirq+0x1cc/0x7fb kernel/softirq.c:571 invoke_softirq+0x8f/0x100 kernel/softirq.c:445 __irq_exit_rcu+0x5a/0x110 kernel/softirq.c:650 irq_exit_rcu+0xe/0x10 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x9a/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x1b/0x20 filter_irq_stacks+0x12c/0x1a0 kernel/stacktrace.c:394 __stack_depot_save+0x21/0x4b0 lib/stackdepot.c:439 kmsan_save_stack_with_flags mm/kmsan/core.c:78 [inline] kmsan_internal_poison_memory+0x61/0x90 mm/kmsan/core.c:58 kmsan_slab_free+0xcd/0x130 mm/kmsan/hooks.c:89 slab_free_hook mm/slub.c:1739 [inline] slab_free_freelist_hook+0x1b8/0x650 mm/slub.c:1795 slab_free mm/slub.c:3549 [inline] kfree+0x26f/0x980 mm/slub.c:4577 tomoyo_path2_perm+0xacc/0xc80 security/tomoyo/file.c:947 tomoyo_path_rename+0x1fb/0x240 security/tomoyo/tomoyo.c:287 security_path_rename+0x207/0x310 security/security.c:1201 do_renameat2+0x143a/0x1dc0 fs/namei.c:4894 __do_sys_rename fs/namei.c:4953 [inline] __se_sys_rename fs/namei.c:4951 [inline] __x64_sys_rename+0xe8/0x140 fs/namei.c:4951 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Local variable bucket_expiry created at: __mod_timer+0x4c/0x1b90 mod_timer+0x33/0x40 kernel/time/timer.c:1161 CPU: 1 PID: 10026 Comm: udevd Not tainted 6.0.0-rc5-syzkaller-48543-g968c2729e576 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 =====================================================