[Bug 288904] [tcp] page fault in tcp_default_output

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288904

[email protected] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |satanist+freebsd@bureaucrac
                   |                            |y.de

--- Comment #16 from [email protected] ---
I had a similar crash today with 15.0-RELEASE-p9:

May 30 12:37:38 hades dhclient[97393]: My address (192.168.0.121) was deleted,
dhclient exiting
May 30 12:37:38 hades dhclient[97393]: connection closed
May 30 12:37:38 hades dhclient[97393]: exiting.
May 30 12:37:38 hades wpa_supplicant[97627]: wlan0: CTRL-EVENT-DISCONNECTED
bssid=ec:a8:1f:bc:8
6:98 reason=3 locally_generated=1
May 30 12:37:38 hades wpa_supplicant[97627]: wlan0: CTRL-EVENT-DSCP-POLICY
clear_all
May 30 12:37:38 hades syslogd: last message repeated 1 times
May 30 12:37:38 hades wpa_supplicant[97627]: wlan0: CTRL-EVENT-TERMINATING 
May 30 12:37:38 hades rtsold[13529]: <rtsock_input_ifannounce> interface wlan0
removed
May 30 12:37:38 hades kernel: wlan0: link state changed to DOWN
May 30 12:38:48 hades syslogd: kernel boot file is /boot/kernel/kernel
May 30 12:38:48 hades kernel: 
May 30 12:38:48 hades syslogd: last message repeated 1 times
May 30 12:38:48 hades kernel: Fatal trap 12: page fault while in kernel mode
May 30 12:38:48 hades kernel: cpuid = 1; apic id = 01
May 30 12:38:48 hades kernel: fault virtual address     = 0x10
May 30 12:38:48 hades kernel: fault code                = supervisor read data,
page not present
May 30 12:38:48 hades kernel: instruction pointer       =
0x20:0xffffffff80d8e2f5
May 30 12:38:48 hades kernel: stack pointer             =
0x28:0xfffffe013da118d0
May 30 12:38:48 hades kernel: frame pointer             =
0x28:0xfffffe013da11900
May 30 12:38:48 hades kernel: code segment              = base 0x0, limit
0xfffff, type 0x1b
May 30 12:38:48 hades kernel:                   = DPL 0, pres 1, long 1, def32
0, gran 1
May 30 12:38:48 hades kernel: processor eflags  = interrupt enabled, resume,
IOPL = 0
May 30 12:38:48 hades kernel: current process           = 25609 (Socket Thread)
May 30 12:38:48 hades kernel: rdi: fffff8000e9b7000 rsi: 000000000000001c rdx:
fffff801b3e30a78
May 30 12:38:48 hades kernel: rcx: fffff8000e9b7000  r8: 00000000ffffffbd  r9:
0000000000000000
May 30 12:38:48 hades kernel: rax: 0000000000000000 rbx: 0000000000000000 rbp:
fffffe013da11900
May 30 12:38:48 hades kernel: r10: fffffe013da11880 r11: 0000000000000008 r12:
0000000000018700
May 30 12:38:48 hades kernel: r13: 0000000000000000 r14: fffffe013da118dc r15:
fffff8002cc26900
May 30 12:38:48 hades kernel: trap number               = 12
May 30 12:38:48 hades kernel: panic: page fault
May 30 12:38:48 hades kernel: cpuid = 1
May 30 12:38:48 hades kernel: time = 1780137458
May 30 12:38:48 hades kernel: KDB: stack backtrace:
May 30 12:38:48 hades kernel: #0 0xffffffff80bbe18d at kdb_backtrace+0x5d
May 30 12:38:48 hades kernel: #1 0xffffffff80b71506 at vpanic+0x136
May 30 12:38:48 hades kernel: #2 0xffffffff80b713c3 at panic+0x43
May 30 12:38:48 hades kernel: #3 0xffffffff81079f99 at trap_pfault+0x3c9
May 30 12:38:48 hades kernel: #4 0xffffffff81050018 at calltrap+0x8
May 30 12:38:48 hades kernel: #5 0xffffffff80d5a1be at
tcp_default_output+0x1c8e
May 30 12:38:48 hades kernel: #6 0xffffffff80d6bcda at tcp_usr_send+0x1fa
May 30 12:38:48 hades kernel: #7 0xffffffff80c1960f at
sosend_generic_locked+0x5ef
May 30 12:38:48 hades kernel: #8 0xffffffff80c18ef1 at sosend_generic+0x61
May 30 12:38:48 hades kernel: #9 0xffffffff80c19b6f at sousrsend+0x5f
May 30 12:38:48 hades kernel: #10 0xffffffff80c21b60 at kern_sendit+0x1c0
May 30 12:38:48 hades kernel: #11 0xffffffff80c21e88 at sendit+0x1a8
May 30 12:38:48 hades kernel: #12 0xffffffff80c21ccd at sys_sendto+0x4d
May 30 12:38:48 hades kernel: #13 0xffffffff8107a8d6 at amd64_syscall+0x126
May 30 12:38:48 hades kernel: #14 0xffffffff8105090b at
fast_syscall_common+0xf8
May 30 12:38:48 hades kernel: Uptime: 3h19m57s
May 30 12:38:48 hades kernel: 
May 30 12:38:48 hades kernel: Dump failed. Partition too small (about 2414MB
were needed this time).
May 30 12:38:48 hades kernel: Automatic reboot in 15 seconds - press a key on
the console to abort
May 30 12:38:48 hades kernel: --> Press a key on the console to reboot,
May 30 12:38:48 hades kernel: --> or switch off the system now.
May 30 12:38:48 hades kernel: ---<<BOOT>>---

This happend while I run "service netif restart wlan0"[0]. I'm not sure if this
is connected and if this is the same bug (because the stack trace is a bit
different).

[0] I sometimes have the problem that ipv6 stops working and restarting the
interface works a workaround. But this is another problem.

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