https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295870
Bug ID: 295870
Summary: [tcp] page fault in tcp_default_output in response to
TCP input
Product: Base System
Version: 15.0-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
I have encountered this crash twice on FreeBSD 15.0, the later one precisely on
15.0-p9.
(kgdb) bt
#0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57
#1 doadump (textdump=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:399
#2 0xffffffff80b55969 in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:519
#3 0xffffffff80b55e77 in vpanic (fmt=0xffffffff811a72af "%s",
ap=ap@entry=0xfffffe011f345730) at /usr/src/sys/kern/kern_shutdown.c:974
#4 0xffffffff80b55ca3 in panic (fmt=<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:887
#5 0xffffffff81053c08 in trap_fatal (frame=<optimized out>, eva=<optimized
out>) at /usr/src/sys/amd64/amd64/trap.c:969
#6 0xffffffff81053c08 in trap_pfault (frame=0xfffffe011f3457b0,
usermode=false, signo=<optimized out>, ucode=<optimized out>)
#7 <signal handler called>
#8 m_copydata (m=0x0, m@entry=0xfffff80b6ea88100, off=0, len=len@entry=1,
cp=<optimized out>) at /usr/src/sys/kern/uipc_mbuf.c:694
#9 0xffffffff80d35cb8 in tcp_default_output (tp=0xfffff801d7df1000) at
/usr/src/sys/netinet/tcp_output.c:1080
#10 0xffffffff80d2dce3 in tcp_output (tp=0xfffff80b6ea88100,
tp@entry=0xfffff801d7df1000) at /usr/src/sys/netinet/tcp_var.h:662
#11 0xffffffff80d2c372 in tcp_do_segment (tp=0xfffff801d7df1000, m=<optimized
out>, th=0xfffff8014447c296, drop_hdrlen=100, tlen=0, iptos=<optimized out>) at
/usr/src/sys/netinet/tcp_input.c:2842
#12 0xffffffff80d29b8c in tcp_input_with_port (mp=<optimized out>,
offp=<optimized out>, proto=<optimized out>, port=port@entry=0) at
/usr/src/sys/netinet/tcp_input.c:1160
#13 0xffffffff80d29fff in tcp6_input_with_port (mp=<optimized out>,
offp=<optimized out>, proto=<optimized out>, port=0) at
/usr/src/sys/netinet/tcp_input.c:582
#14 tcp6_input (mp=<optimized out>, offp=<optimized out>, proto=<optimized
out>) at /usr/src/sys/netinet/tcp_input.c:589
#15 0xffffffff80d6d14e in ip6_input (m=0x0) at
/usr/src/sys/netinet6/ip6_input.c:963
#16 0xffffffff80c9b668 in netisr_process_workstream_proto
(nwsp=0xfffffe00469d5e00, proto=6) at /usr/src/sys/net/netisr.c:926
#17 swi_net (arg=0xfffffe00469d5e00) at /usr/src/sys/net/netisr.c:973
#18 0xffffffff80b11709 in intr_event_execute_handlers (ie=0xfffff80001482a00,
p=<optimized out>) at /usr/src/sys/kern/kern_intr.c:1191
#19 ithread_execute_handlers (ie=0xfffff80001482a00, p=<optimized out>) at
/usr/src/sys/kern/kern_intr.c:1204
#20 ithread_loop (arg=arg@entry=0xfffff80001401c20) at
/usr/src/sys/kern/kern_intr.c:1297
#21 0xffffffff80b0dcab in fork_exit (callout=0xffffffff80b114d0 <ithread_loop>,
arg=0xfffff80001401c20, frame=0xfffffe011f345f40) at
/usr/src/sys/kern/kern_fork.c:1153
#22 <signal handler called>
(kgdb)
I have a full memory dump, so I can provide additional information.
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