Date: Mon, 11 Sep 2023 13:47:19 +0000 (UTC) From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: current@FreeBSD.org Subject: kernel trap 12 .. cam_periph_release_locked_buses() panics under panic? Message-ID: <514n7872-pp9r-np6p-q6q3-044q4q90709o@yvfgf.mnoonqbm.arg>
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Hi,
had a kernel hitting an alll-to-known wifi issue and panic (I was actually
happy I could reproduce) and then the screen kept scrolling for a while
panicing all over again and ddb was unusable (not so happy).
I assume the problem is cam_periph_release_locked_buses()?
/bz
...
--- trap 0x80bc1f07, rip = 0xffffffff80381e83, rsp = 0x3d7bb6db69f8, rbp = 0xfffffe00907fa4a0 ---
cam_periph_release_locked_buses() at cam_periph_release_locked_buses+0x43/frame 0xfffffe00907fa4a0
kernel trap 12 with interrupts disabled
Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 02
fault virtual address = 0xfffffe00907fa4a8
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff8101f660
stack pointer = 0x0:0xfffffe00907f8f90
frame pointer = 0x0:0xfffffe00907f9020
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = resume, IOPL = 0
current process = 0 (iwlwifi0 net80211 t)
rdi: fffffe00907f8f90 rsi: 0000000000000008 rdx: fffffe00907fa4a8
rcx: fffffe00907f9030 r8: 0000000000000000 r9: 0000000000000000
rax: 0000000000000000 rbx: fffffe00907f90f0 rbp: fffffe00907f9020
r10: 0000000000000000 r11: 0000000000000000 r12: fffffe00907fa4a8
r13: 0000000000000008 r14: 0000000000000000 r15: fffffe00907f9030
trap number = 12
panic: page fault
cpuid = 2
time = 1694439681
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00907f8c60
vpanic() at vpanic+0x132/frame 0xfffffe00907f8d90
panic() at panic+0x43/frame 0xfffffe00907f8df0
trap_fatal() at trap_fatal+0x40c/frame 0xfffffe00907f8e50
trap_pfault() at trap_pfault+0xae/frame 0xfffffe00907f8ec0
calltrap() at calltrap+0x8/frame 0xfffffe00907f8ec0
--- trap 0xc, rip = 0xffffffff8101f660, rsp = 0xfffffe00907f8f90, rbp = 0xfffffe00907f9020 ---
db_read_bytes() at db_read_bytes+0xa0/frame 0xfffffe00907f9020
db_get_value() at db_get_value+0x31/frame 0xfffffe00907f9060
db_backtrace() at db_backtrace+0x1d9/frame 0xfffffe00907f90e0
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00907f9160
vpanic() at vpanic+0x132/frame 0xfffffe00907f9290
panic() at panic+0x43/frame 0xfffffe00907f92f0
trap_fatal() at trap_fatal+0x40c/frame 0xfffffe00907f9350
trap_pfault() at trap_pfault+0xae/frame 0xfffffe00907f93c0
calltrap() at calltrap+0x8/frame 0xfffffe00907f93c0
--- trap 0xc, rip = 0xffffffff8101f660, rsp = 0xfffffe00907f9490, rbp = 0xfffffe00907f9520 ---
db_read_bytes() at db_read_bytes+0xa0/frame 0xfffffe00907f9520
db_get_value() at db_get_value+0x31/frame 0xfffffe00907f9560
db_backtrace() at db_backtrace+0x1d9/frame 0xfffffe00907f95e0
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00907f9660
vpanic() at vpanic+0x132/frame 0xfffffe00907f9790
panic() at panic+0x43/frame 0xfffffe00907f97f0
trap_fatal() at trap_fatal+0x40c/frame 0xfffffe00907f9850
trap_pfault() at trap_pfault+0xae/frame 0xfffffe00907f98c0
calltrap() at calltrap+0x8/frame 0xfffffe00907f98c0
--- trap 0xc, rip = 0xffffffff8101f660, rsp = 0xfffffe00907f9990, rbp = 0xfffffe00907f9a20 ---
db_read_bytes() at db_read_bytes+0xa0/frame 0xfffffe00907f9a20
db_get_value() at db_get_value+0x31/frame 0xfffffe00907f9a60
db_backtrace() at db_backtrace+0x1d9/frame 0xfffffe00907f9ae0
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00907f9b60
vpanic() at vpanic+0x132/frame 0xfffffe00907f9c90
panic() at panic+0x43/frame 0xfffffe00907f9cf0
lkpi_sta_auth_to_scan() at lkpi_sta_auth_to_scan+0x388/frame 0xfffffe00907f9d70
lkpi_iv_newstate() at lkpi_iv_newstate+0x2eb/frame 0xfffffe00907f9df0
ieee80211_newstate_cb() at ieee80211_newstate_cb+0x1e7/frame 0xfffffe00907f9e40
taskqueue_run_locked() at taskqueue_run_locked+0xab/frame 0xfffffe00907f9ec0
taskqueue_thread_loop() at taskqueue_thread_loop+0xd3/frame 0xfffffe00907f9ef0
fork_exit() at fork_exit+0x82/frame 0xfffffe00907f9f30
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00907f9f30
--- trap 0x80bc1f07, rip = 0xffffffff80381e83, rsp = 0x3d7bb6db69f8, rbp = 0xfffffe00907fa4a0 ---
cam_periph_release_locked_buses() at cam_periph_release_locked_buses+0x43/frame 0xfffffe00907fa4a0
kernel trap 12 with interrupts disabled
...
--
Bjoern A. Zeeb r15:7
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