Date: Wed, 18 Mar 2026 13:43:25 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 293901] panic: mutex ACPI global lock owned at ../../../kern/kern_event.c:LINE Message-ID: <bug-293901-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293901 Bug ID: 293901 Summary: panic: mutex ACPI global lock owned at ../../../kern/kern_event.c:LINE Product: Base System Version: 15.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: r772577952@gmail.com Hi FreeBSD maintainers, We discovered an issue while fuzzing freebsd kernel with syzkaller and our generated syscall descriptions. From the report I think the root cause of this issue appears to be located within ACPI subsystem. This issue is reproducible on the latest release (release/15.0.0-p4, commit 8ef0ed690df2dca0cc22b827819d112f868470bb). The kernel console output, kernel config, and C/syz reproducers can be found at https://drive.google.com/drive/folders/1A0e4OChcrWfSBgJHEpKxSL5envELKzNY?usp=sharing. The issue report is also listed below (symbolized by our modified syz-symbolize) to assist with the analysis: ``` TITLE: panic: mutex ACPI global lock owned at ../../../kern/kern_event.c:LINE CORRUPTED: false () SUPPRESSED: false MAINTAINERS (TO): [] MAINTAINERS (CC): [] login: panic: mutex ACPI global lock owned at ../../../kern/kern_event.c:2615 cpuid = 2 time = 1773840955 KDB: stack backtrace: #0 0xffffffff81608a59 at kdb_backtrace+0x119 /usr/obj/usr/src/kern/subr_kdb.c:452 #1 0xffffffff81537d67 at vpanic+0x257 /usr/obj/usr/src/kern/kern_shutdown.c:960 #2 0xffffffff81537b05 at panic+0xb5 /usr/obj/usr/src/kern/kern_shutdown.c:887 #3 0xffffffff814e6f44 at __mtx_assert+0x224 /usr/obj/usr/src/kern/kern_mutex.c:0 #4 0xffffffff81474f27 at knlist_add+0x57 /usr/obj/usr/src/kern/kern_event.c:2531 #5 0xffffffff8203c4ef at apmkqfilter+0xcf /usr/obj/usr/src/x86/acpica/acpi_apm.c:413 #6 0xffffffff811cc54b at devfs_kqfilter_f+0x18b /usr/obj/usr/src/fs/devfs/devfs_vnops.c:1003 #7 0xffffffff81470f16 at kqueue_register+0xd66 /usr/obj/usr/src/kern/kern_event.c:1769 #8 0xffffffff81473a49 at kqueue_kevent+0x1b9 /usr/obj/usr/src/kern/kern_event.c:1444 #9 0xffffffff814737f9 at kern_kevent_fp+0xf9 /usr/obj/usr/src/kern/kern_event.c:1475 #10 0xffffffff81473617 at kern_kevent+0x157 /usr/obj/usr/src/kern/kern_event.c:1415 #11 0xffffffff81472bb4 at kern_kevent_generic+0x174 /usr/obj/usr/src/kern/kern_event.c:1271 #12 0xffffffff8147288f at sys_kevent+0x1ef /usr/obj/usr/src/kern/kern_event.c:1245 #13 0xffffffff820f9372 at amd64_syscall+0x4e2 /usr/obj/usr/src/kern/subr_syscall.c:193 #14 0xffffffff8209ffab at fast_syscall_common+0xf8 /usr/obj/usr/src/amd64/amd64/exception.S:571 Uptime: 53s Automatic reboot in 15 seconds - press a key on the console to abort ``` -- You are receiving this mail because: You are the assignee for the bug.home | help
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