Hey guys! Yeah, it seems my. I will look into it today.
Thanks! пт, 22 трав. 2026 р. о 18:35 Ryan Libby <[email protected]> пише: > On Fri, May 22, 2026 at 1:46 AM Bjoern A. Zeeb > <[email protected]> wrote: > > > > Hi, > > > > I was using the mouse in tmux on v1 when everying stopped. > > Sadly we didn't switch to v0 for console but it seems I managed to get a > dump only checking now; the kernel from then is already gone. > > > > core.txt said. > > > > panic: mtx_lock_spin: recursed on non-recursive mutex vtbuf @ > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/dev/vt/vt_buf.c:744 > > > > cpuid = 1 > > time = 1779437567 > > KDB: stack backtrace: > > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame > 0xfffffe00d773e7a0 > > vpanic() at vpanic+0x149/frame 0xfffffe00d773e8d0 > > panic() at panic+0x43/frame 0xfffffe00d773e930 > > __mtx_lock_spin_flags() at __mtx_lock_spin_flags+0x11b/frame > 0xfffffe00d773e970 > > vtbuf_flush_mark() at vtbuf_flush_mark+0x82/frame 0xfffffe00d773e9b0 > > vtbuf_unmark_on_cross() at vtbuf_unmark_on_cross+0xcc/frame > 0xfffffe00d773e9d0 > > vtterm_fill() at vtterm_fill+0x27/frame 0xfffffe00d773ea00 > > teken_subr_erase_line() at teken_subr_erase_line+0x90/frame > 0xfffffe00d773ea20 > > teken_state_2() at teken_state_2+0x497/frame 0xfffffe00d773ea40 > > teken_input_char() at teken_input_char+0x47/frame 0xfffffe00d773ea60 > > teken_input() at teken_input+0x9f/frame 0xfffffe00d773ea90 > > termtty_outwakeup() at termtty_outwakeup+0xcf/frame 0xfffffe00d773eb60 > > ttydisc_write() at ttydisc_write+0x337/frame 0xfffffe00d773ecd0 > > ttydev_write() at ttydev_write+0x13f/frame 0xfffffe00d773ed10 > > devfs_write_f() at devfs_write_f+0xf3/frame 0xfffffe00d773ed70 > > dofilewrite() at dofilewrite+0x81/frame 0xfffffe00d773edc0 > > sys_writev() at sys_writev+0x69/frame 0xfffffe00d773ee00 > > amd64_syscall() at amd64_syscall+0x168/frame 0xfffffe00d773ef30 > > fast_syscall_common() at fast_syscall_common+0xf8/frame > 0xfffffe00d773ef30 > > --- syscall (121, FreeBSD ELF64, writev), rip = 0x82601d5aa, rsp = > 0x8207a3408, rbp = 0x8207a3430 --- > > KDB: enter: panic > > > > > > In case it helps, I believe this is file:line as reported by gdb in > core.txt: > > > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/kern/kern_mutex.c:353 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/dev/vt/vt_buf.c:744 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/dev/vt/vt_buf.c:864 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/dev/vt/vt_buf.c:210 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/dev/vt/vt_buf.c:232 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/dev/vt/vt_core.c:1201 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/teken/teken.c:121 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/teken/teken_subr.h:558 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/teken/teken.c:255 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/teken/teken.c:284 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/teken/teken.c:317 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/kern/subr_terminal.c:422 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/sys/ttydevsw.h:114 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/kern/tty_ttydisc.c:658 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/kern/tty.c:550 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/fs/devfs/devfs_vnops.c:1980 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/sys/file.h:372 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/kern/sys_generic.c:565 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/kern/sys_generic.c:492 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/kern/sys_generic.c:478 > > at > /usr/home/test/Sources/git/FreeBSD/freebsd-src.git/sys/amd64/amd64/../../kern/subr_syscall.c:193 > > > > > > -- > > Bjoern A. Zeeb r15:7 > > > > I think it's probably related to or a regression from > 8db0553ed6d8 ("vt: Clear cut-paste selection if the area intersects > with the filled region") > > https://cgit.freebsd.org/src/commit/?id=8db0553ed6d8636d82a26896237099526b93be19 > > which added vtbuf_unmark_on_cross() which is in your panic stack. > > I don't know this code but it looks like the mutex is first taken by > teken_input / teken_funcs_pre_input / vtterm_pre_input and then again > by teken_input with your panic stack. > > Ryan >
