Date: Sat, 16 May 2026 23:55:03 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 295348] ufs: support unmapped bufs causing panic: vm_fault_lookup Message-ID: <bug-295348-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295348 Bug ID: 295348 Summary: ufs: support unmapped bufs causing panic: vm_fault_lookup Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: agh@riseup.net On 16-CURRENT, the recently committed "ufs: support unmapped bufs for indirect blocks in bmap"[1], is causing a panic if the host is loaded. This is reproducible locally when a release.sh build, and poudriere-(testport|bulk) are run concurrently. release.sh is using null mounted ${SRC}, and ${PORTS}, and tmpfs ${CHROOTDIR}, poudriere is configured with tmpfs all. The host is an AMD EPYC 7742 64-Core Processor with 125GiB usable system memory. > panic: vm_fault_lookup: fault on nofault entry, addr: 0xfffffe00b2840000 > cpuid = 34 > time = 1778975305 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0453921470 > vpanic() at vpanic+0x149/frame 0xfffffe04539215a0 > panic() at panic+0x43/frame 0xfffffe0453921600 > vm_fault() at vm_fault+0x1c0a/frame 0xfffffe0453921780 > vm_fault_trap() at vm_fault_trap+0x65/frame 0xfffffe04539217c0 > trap_pfault() at trap_pfault+0x274/frame 0xfffffe0453921830 > calltrap() at calltrap+0x8/frame 0xfffffe0453921830 > --- trap 0xc, rip = 0xffffffff80a9b100, rsp = 0xfffffe0453921900, rbp = 0xfffffe04539219a0 --- > ufs_bmap_seekdata() at ufs_bmap_seekdata+0x340/frame 0xfffffe04539219a0 > ufs_ioctl() at ufs_ioctl+0x5f/frame 0xfffffe04539219d0 > VOP_IOCTL_APV() at VOP_IOCTL_APV+0x51/frame 0xfffffe0453921a00 > vn_generic_copy_file_range() at vn_generic_copy_file_range+0x3b4/frame 0xfffffe0453921c00 > vn_copy_file_range() at vn_copy_file_range+0x2e7/frame 0xfffffe0453921ce0 > kern_copy_file_range() at kern_copy_file_range+0x47c/frame 0xfffffe0453921dc0 > sys_copy_file_range() at sys_copy_file_range+0x78/frame 0xfffffe0453921e10 > amd64_syscall() at amd64_syscall+0x164/frame 0xfffffe0453921f30 > fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0453921f30 > --- syscall (569, FreeBSD ELF64, copy_file_range), rip = 0x824a11aba, rsp = 0x820893a38, rbp = 0x820893d70 --- > KDB: enter: panic > [ thread pid 3235 tid 101303 ] > Stopped at kdb_enter+0x33: movq $0,0xba0cd2(%rip) > db> 1: https://codeberg.org/FreeBSD/freebsd-src/commit/bab04ddf1fd4b7a77d1cfae4a67ededf1f35ee0d -- You are receiving this mail because: You are the assignee for the bug.home | help
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