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To: freebsd-current Current Content-Type: text/plain; charset="UTF-8" X-Spamd-Result: default: False [-4.85 / 15.00]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-0.997]; NEURAL_HAM_SHORT(-0.85)[-0.848]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; TO_DN_ALL(0.00)[]; RCPT_COUNT_ONE(0.00)[1]; FROM_HAS_DN(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; MIME_TRACE(0.00)[0:+]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; FREEMAIL_ENVFROM(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MISSING_XM_UA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::52f:from]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; SUBJECT_HAS_QUESTION(0.00)[] X-Rspamd-Queue-Id: 4fY1pX1Bzwz47hs X-Spamd-Bar: ---- Hi, The latest FreeBSD 16-CURRENT panics during some disk activities (e.g.: installing a packages, starting some services, for example /etc/rc.d/devd) -- Fatal trap 12: page fault while in kernel mode cpuid = 6; apic id = 06 fault virtual address = 0x45e4db029e00 fault code = supervisor write data, protection violation instruction pointer = 0x20:0xffffffff81127826 stack pointer = 0x28:0xfffffe00ff03b930 frame pointer = 0x28:0xfffffe00ff03b930 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 1042 (sh) rdi: 000045e4db029e00 rsi: fffff80063fed000 rdx: 0000000000000400 rcx: 0000000000000400 r8: fffff80063fed000 r9: 000000000000261f rax: 0000000000000000 rbx: fffff80063fed000 rbp: fffffe00ff03b930 r10: 0000000000000400 r11: fffff8000fb9ccd0 r12: fffffe00ff03bde8 r13: 0000000000000400 r14: 0000000000000400 r15: fffffe00ff03bda8 trap number = 12 panic: page fault cpuid = 6 time = 1773492421 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00ff03b640 vpanic() at vpanic+0x136/frame 0xfffffe00ff03b770 panic() at panic+0x43/frame 0xfffffe00ff03b7d0 trap_fatal() at trap_fatal+0x68/frame 0xfffffe00ff03b7f0 trap_pfault() at trap_pfault+0x2ac/frame 0xfffffe00ff03b860 calltrap() at calltrap+0x8/frame 0xfffffe00ff03b860 --- trap 0xc, rip = 0xffffffff81127826, rsp = 0xfffffe00ff03b930, rbp = 0xfffffe00ff03b930 --- copyout_smap_erms() at copyout_smap_erms+0x196/frame 0xfffffe00ff03b930 uiomove_fromphys() at uiomove_fromphys+0x15f/frame 0xfffffe00ff03b990 vn_read_from_obj() at vn_read_from_obj+0x13f/frame 0xfffffe00ff03ba70 VOP_READ_PGCACHE_APV() at VOP_READ_PGCACHE_APV+0x2a/frame 0xfffffe00ff03ba90 vn_read() at vn_read+0x94/frame 0xfffffe00ff03bb10 vn_io_fault_doio() at vn_io_fault_doio+0x45/frame 0xfffffe00ff03bb70 vn_io_fault1() at vn_io_fault1+0x15e/frame 0xfffffe00ff03bcb0 vn_io_fault() at vn_io_fault+0x19d/frame 0xfffffe00ff03bd40 dofileread() at dofileread+0x80/frame 0xfffffe00ff03bd90 sys_read() at sys_read+0x127/frame 0xfffffe00ff03be00 amd64_syscall() at amd64_syscall+0x169/frame 0xfffffe00ff03bf30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00ff03bf30 --- syscall (3, FreeBSD ELF64, read), rip = 0x3e8c57b7232a, rsp = 0x3e8c53973298, rbp = 0x3e8c539732e0 --- KDB: enter: panic Uptime: 17s -- Other info + messages in dmesg: Kernel: GENERIC uname -a: FreeBSD host1.my.domain 16.0-CURRENT FreeBSD 16.0-CURRENT #0 main-f91464171d61: Sat Mar 14 12:35:27 UTC 2026 root@host1.my.domain:/usr/obj/usr/jails/src/src_16/src/amd64.amd64/sys/GENERIC amd64 Filesystem: UFS2 dmesg with suspicious entries: ``` lock order reversal: (sleepable after non-sleepable) 1st 0xffffffff81da28a8 dev mtx (devd, sleep mutex) @ /usr/jails/src/src_16/src/sys/kern/kern_devctl.c:572 2nd 0xffffffff82300d50 umareclaim (umareclaim, sx) @ /usr/jails/src/src_16/src/sys/vm/uma_core.c:3428 lock order devd -> umareclaim attempted at: #0 0xffffffff80c43fbf at witness_checkorder+0xcaf #1 0xffffffff80bd40f0 at _sx_xlock+0x60 #2 0xffffffff80f9903d at uma_zdestroy+0x3d #3 0xffffffff80b64fce at sysctl_devctl_queue+0x8e #4 0xffffffff80bdb3ec at sysctl_root_handler_locked+0x9c #5 0xffffffff80bda74f at sysctl_root+0x22f #6 0xffffffff80bdae56 at userland_sysctl+0x1b6 #7 0xffffffff80bdac65 at sys___sysctl+0x65 #8 0xffffffff8112b719 at amd64_syscall+0x169 #9 0xffffffff810fa54b at fast_syscall_common+0xf8 Freed UMA keg (DEVCTL) was not empty (455 items). Lost 114 pages of memory. ```