[Bug 292884] nfsd causes kernel panic
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Date: Tue, 03 Feb 2026 18:42:02 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292884
--- Comment #7 from Arrigo Triulzi <arrigo@alchemistowl.org> ---
Three identical crashes so far, â-tâ flag added to nfsd and restarted.
Requested kgdb output below:
(kgdb) frame 10
#10 0xffffffff80e7ec02 in svc_getreq (
xprt=0xfffff80105227000, rqstp_ret=<optimized out>)
at /usr/src/sys/rpc/svc.c:935
warning: 935 /usr/src/sys/rpc/svc.c: No such file or directory
(kgdb) p/x *xprt->xp_socket
$1 = {so_lock = {lock_object = {
lo_name = 0xffffffff811f19c3,
lo_flags = 0x1420000, lo_data = 0x0,
lo_witness = 0x0}, mtx_lock = 0x4},
so_count = 0x0, so_rdsel = {si_tdlist = {
tqh_first = 0x0, tqh_last = 0x0}, si_note = {
kl_list = {slh_first = 0x0},
kl_lock = 0xffffffff80c16ba0,
kl_unlock = 0xffffffff80c16c80,
kl_assert_lock = 0xffffffff80c16ce0,
kl_lockarg = 0xfffff80231b56400,
kl_autodestroy = 0x0}, si_mtx = 0x0}, so_wrsel = {
si_tdlist = {tqh_first = 0x0, tqh_last = 0x0},
si_note = {kl_list = {slh_first = 0x0},
kl_lock = 0xffffffff80c16cf0,
kl_unlock = 0xffffffff80c16dd0,
kl_assert_lock = 0xffffffff80c16e30,
kl_lockarg = 0xfffff80231b56400,
kl_autodestroy = 0x0}, si_mtx = 0x0},
so_options = 0x0, so_type = 0x2, so_state = 0x0,
so_pcb = 0x0, so_vnet = 0xfffff8010151d040,
so_proto = 0xffffffff81905fe8, so_linger = 0x0,
so_timeo = 0x0, so_error = 0x0, so_rerror = 0x0,
so_sigio = 0x0, so_cred = 0xfffff82081789300,
so_label = 0x0, so_gencnt = 0x691c7,
so_emuldata = 0x0, so_dtor = 0x0, osd = {
osd_nslots = 0x0, osd_slots = 0x0, osd_next = {
le_next = 0x0, le_prev = 0x0}}, so_fibnum = 0x0,
so_user_cookie = 0x0, so_ts_clock = 0x0,
so_max_pacing_rate = 0x0, so_splice = 0x0,
--Type <RET> for more, q to quit, c to continue without paging--c
so_splice_back = 0x0, so_splice_sent = 0x0,
so_snd_sx = {lock_object = {
lo_name = 0xffffffff811c250a,
lo_flags = 0x2320000, lo_data = 0x0,
lo_witness = 0x0}, sx_lock = 0x6}, so_snd_mtx = {
lock_object = {lo_name = 0xffffffff8122d246,
lo_flags = 0x1020000, lo_data = 0x0,
lo_witness = 0x0}, mtx_lock = 0x4}, so_rcv_sx = {
lock_object = {lo_name = 0xffffffff81237f82,
lo_flags = 0x2320000, lo_data = 0x0,
lo_witness = 0x0}, sx_lock = 0x6}, so_rcv_mtx = {
lock_object = {lo_name = 0xffffffff81262902,
lo_flags = 0x1020000, lo_data = 0x0,
lo_witness = 0x0}, mtx_lock = 0x4}, {{so_rcv = {
sb_sel = 0xfffff80231b56428, sb_state = 0x0,
sb_flags = 0x20, sb_acc = 0x0, sb_ccc = 0x0,
sb_mbcnt = 0x0, sb_ctl = 0x0, sb_hiwat = 0x0,
sb_lowat = 0x1, sb_mbmax = 0x0, sb_timeo = 0x0,
sb_upcall = 0xffffffff80e802d0,
sb_upcallarg = 0xfffff80105227000,
sb_aiojobq = {tqh_first = 0x0,
tqh_last = 0xfffff80231b56640}, sb_aiotask = {
ta_link = {stqe_next = 0x0},
ta_pending = 0x0, ta_priority = 0x0,
ta_flags = 0x0, ta_func = 0xffffffff80bec060,
ta_context = 0xfffff80231b56400}, {{
sb_mtx = 0xfffff80231b565e0, sb_mb = 0x0,
sb_mbtail = 0x0, sb_lastrecord = 0x0,
sb_sndptr = 0x0, sb_fnrdy = 0x0,
sb_sndptroff = 0x0, sb_tlscc = 0x0,
sb_tlsdcc = 0x0, sb_mtls = 0x0,
sb_mtlstail = 0x0, sb_tls_seqno = 0x0,
sb_tls_info = 0x0}, {uxst_mbq = {
stqh_first = 0xfffff80231b565e0,
stqh_last = 0x0}, uxst_fnrdy = 0x0,
uxst_peer = 0x0, uxst_flags = 0x0}, {
uxdg_mb = {stqh_first = 0xfffff80231b565e0,
stqh_last = 0x0}, uxdg_peeked = 0x0, {
uxdg_conns = {tqh_first = 0x0,
tqh_last = 0x0}, uxdg_clist = {
tqe_next = 0x0, tqe_prev = 0x0}},
uxdg_cc = 0x0, uxdg_ctl = 0x0,
uxdg_mbcnt = 0x0}, {nl_queue = {
tqh_first = 0xfffff80231b565e0,
tqh_last = 0x0}}}}, so_snd = {
sb_sel = 0xfffff80231b56470, sb_state = 0x0,
sb_flags = 0x0, sb_acc = 0x0, sb_ccc = 0x0,
sb_mbcnt = 0x0, sb_ctl = 0x0, sb_hiwat = 0x0,
sb_lowat = 0x800, sb_mbmax = 0x0,
sb_timeo = 0x0, sb_upcall = 0x0,
sb_upcallarg = 0x0, sb_aiojobq = {
tqh_first = 0x0,
tqh_last = 0xfffff80231b56710}, sb_aiotask = {
ta_link = {stqe_next = 0x0},
ta_pending = 0x0, ta_priority = 0x0,
ta_flags = 0x0, ta_func = 0xffffffff80bec740,
ta_context = 0xfffff80231b56400}, {{
sb_mtx = 0xfffff80231b565a0, sb_mb = 0x0,
sb_mbtail = 0x0, sb_lastrecord = 0x0,
sb_sndptr = 0x0, sb_fnrdy = 0x0,
sb_sndptroff = 0x0, sb_tlscc = 0x0,
sb_tlsdcc = 0x0, sb_mtls = 0x0,
sb_mtlstail = 0x0, sb_tls_seqno = 0x0,
sb_tls_info = 0x0}, {uxst_mbq = {
stqh_first = 0xfffff80231b565a0,
stqh_last = 0x0}, uxst_fnrdy = 0x0,
uxst_peer = 0x0, uxst_flags = 0x0}, {
uxdg_mb = {stqh_first = 0xfffff80231b565a0,
stqh_last = 0x0}, uxdg_peeked = 0x0, {
uxdg_conns = {tqh_first = 0x0,
tqh_last = 0x0}, uxdg_clist = {
tqe_next = 0x0, tqe_prev = 0x0}},
uxdg_cc = 0x0, uxdg_ctl = 0x0,
uxdg_mbcnt = 0x0}, {nl_queue = {
tqh_first = 0xfffff80231b565a0,
tqh_last = 0x0}}}}, so_list = {
tqe_next = 0x0, tqe_prev = 0x0},
so_listen = 0x0, so_qstate = 0x0,
so_peerlabel = 0x0, so_oobmark = 0x0,
so_ktls_rx_list = {stqe_next = 0x0}}, {
sol_incomp = {tqh_first = 0xfffff80231b56428,
tqh_last = 0x200000}, sol_comp = {
tqh_first = 0x0, tqh_last = 0x0},
sol_qlen = 0x1, sol_incqlen = 0x0,
sol_qlimit = 0x0,
sol_accept_filter = 0xffffffff80e802d0,
sol_accept_filter_arg = 0xfffff80105227000,
sol_accept_filter_str = 0x0,
sol_upcall = 0xfffff80231b56640,
sol_upcallarg = 0x0, sol_sbrcv_lowat = 0x0,
sol_sbsnd_lowat = 0x0,
sol_sbrcv_hiwat = 0x80bec060,
sol_sbsnd_hiwat = 0xffffffff,
sol_sbrcv_flags = 0x6400,
sol_sbsnd_flags = 0x31b5,
sol_sbrcv_timeo = 0xfffff80231b565e0,
sol_sbsnd_timeo = 0x0, sol_lastover = {
tv_sec = 0x0, tv_usec = 0x0},
sol_overcount = 0x0}}}
(kgdb)
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