Date: Tue, 10 Mar 2020 02:55:42 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 244706] [panic] NULL dereference inside __mtx_lock_sleep() Message-ID: <bug-244706-227-XjA7wMzHyY@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-244706-227@https.bugs.freebsd.org/bugzilla/> References: <bug-244706-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D244706 --- Comment #2 from Eugene Grosbein <eugen@freebsd.org> --- Also, this system does not clear RAM between reboots, so dmesg buffer survi= ves panic and saved to the log after reboot: Fatal trap 12: page fault while in kernel mode cpuid =3D 1; apic id =3D 02 fault virtual address =3D 0x3b8 fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff80b024ad stack pointer =3D 0x28:0xfffffe022b5ed720 frame pointer =3D 0x28:0xfffffe022b5ed7a0 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 12 (swi4: clock (0)) trap number =3D 12 panic: page fault cpuid =3D 1 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff803b4bbb =3D db_trace_self_wrapper+0x2b/frame 0xfffffe022b5ed3d0 vpanic() at 0xffffffff80b2253e =3D vpanic+0x17e/frame 0xfffffe022b5ed430 panic() at 0xffffffff80b223b3 =3D panic+0x43/frame 0xfffffe022b5ed490 trap_pfault() at 0xffffffff80fb8d00 =3D trap_pfault/frame 0xfffffe022b5ed4e0 trap_pfault() at 0xffffffff80fb8d49 =3D trap_pfault+0x49/frame 0xfffffe022b= 5ed540 trap() at 0xffffffff80fb83dd =3D trap+0x29d/frame 0xfffffe022b5ed650 calltrap() at 0xffffffff80f979e3 =3D calltrap+0x8/frame 0xfffffe022b5ed650 --- trap 0xc, rip =3D 0xffffffff80b024ad, rsp =3D 0xfffffe022b5ed720, rbp = =3D 0xfffffe022b5ed7a0 --- __mtx_lock_sleep() at 0xffffffff80b024ad =3D __mtx_lock_sleep+0xbd/frame 0xfffffe022b5ed7a0 ipreass_slowtimo() at 0xffffffff80ca1078 =3D ipreass_slowtimo+0x28/frame 0xfffffe022b5ed7e0 pfslowtimo() at 0xffffffff80baa504 =3D pfslowtimo+0x54/frame 0xfffffe022b5e= d810 softclock_call_cc() at 0xffffffff80b3acbf =3D softclock_call_cc+0x14f/frame 0xfffffe022b5ed8c0 softclock() at 0xffffffff80b3b1b9 =3D softclock+0x79/frame 0xfffffe022b5ed8= e0 intr_event_execute_handlers() at 0xffffffff80ae7119 =3D intr_event_execute_handlers+0xe9/frame 0xfffffe022b5ed920 ithread_loop() at 0xffffffff80ae7807 =3D ithread_loop+0xe7/frame 0xfffffe022b5ed970 fork_exit() at 0xffffffff80ae44c3 =3D fork_exit+0x83/frame 0xfffffe022b5ed9= b0 fork_trampoline() at 0xffffffff80f989fe =3D fork_trampoline+0xe/frame 0xfffffe022b5ed9b0 --- trap 0, rip =3D 0, rsp =3D 0, rbp =3D 0 --- KDB: enter: panic Uptime: 24d16h23m51s --=20 You are receiving this mail because: You are the assignee for the bug.=
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