Date: Mon, 20 Aug 2018 21:02:32 +0000 From: bugzilla-noreply@freebsd.org To: wireless@FreeBSD.org Subject: [Bug 230785] Page fault when if_ath module is unloaded Message-ID: <bug-230785-21060@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=230785 Bug ID: 230785 Summary: Page fault when if_ath module is unloaded Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: wireless Assignee: wireless@FreeBSD.org Reporter: aliovx@gmail.com When compiling if_ath as a module. kldload if_ath followed by kldunload if_ath causes a page fault. The chip is AR9380. [ath] unloaded [ar5210] unloaded [ar5211] unloaded [ar5416] unloaded [ar5212] unloaded [ar9300] unloaded Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex ath0 (ath0) r = 0 (0xfffffe004eea0190) locked @ /usr/src/sys/dev/ath/if_ath.c:1423 stack backtrace: #0 0xffffffff8044a2b3 at witness_debugger+0x73 #1 0xffffffff8044b691 at witness_warn+0x461 #2 0xffffffff806ce093 at trap_pfault+0x53 #3 0xffffffff806cd6aa at trap+0x2ba #4 0xffffffff806a84a5 at calltrap+0x8 #5 0xffffffff81d4c745 at ath_pci_detach+0x95 #6 0xffffffff80416d27 at device_detach+0x167 #7 0xffffffff8041629f at devclass_driver_deleted+0x4f #8 0xffffffff804161ad at devclass_delete_driver+0x8d #9 0xffffffff8041bc9f at driver_module_handler+0x10f #10 0xffffffff803c3c52 at module_unload+0x32 #11 0xffffffff803b65cb at linker_file_unload+0x23b #12 0xffffffff803b695c at linker_file_unload+0x5cc #13 0xffffffff803b782d at kern_kldunload+0xcd #14 0xffffffff806ce9c1 at amd64_syscall+0x281 #15 0xffffffff806a8d8d at fast_syscall_common+0x101 Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0xffffffff81cb3180 fault code = supervisor read instruction, page not present instruction pointer = 0x20:0xffffffff81cb3180 stack pointer = 0x28:0xfffffe004e249708 frame pointer = 0x28:0xfffffe004e249730 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 701 (kldunload) -- You are receiving this mail because: You are the assignee for the bug.
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