[Bug 257387] MMCCAM : LOR when setting freq
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Date: Sat, 24 Jul 2021 17:43:59 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=257387 Bug ID: 257387 Summary: MMCCAM : LOR when setting freq Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: manu@freebsd.org There is a Lock Out of Order when we set the frequency on the mmc controller. Logs : (sdda0:aw_mmc1:0:0:0): Set SD freq to 52 MHz (min out of host f=150 MHz and card f=52 MHz) h: /lib /usr/lib /usr/lib/compat /usr/local/lib /usr/local/lib/compat/pkg /usr/llock order reversal: (sleepable after non-sleep able) 1st 0xffffa0000d6f8588 (aw_mmc_sim, sleep mutex) @ /usr/home/manu/Work/freebsd/src/wipbsd/sys/cam/cam_xpt.c:2804 2nd 0xffff000000a44bd8 Clock topology lock (Clock topology lock, sx) @ /usr/home/manu/Work/freebsd/src/wipbsd/sys/dev/extres/c lk/clk.c:1245 ocal/lib/compat/lock order aw_mmc_sim -> Clock topology lock attempted at: #0 0pkg /usr/local/lxffff000000426d98 at witness_checkorder+0xc0c #1 0xffff0000003cib/gcc10 /usr/lo5144 at _sx_slock_int+0x7c #2 0xffff00000014cfe4 at clk_disablecal/lib/perl5/5.32/mach/CORE /us+0x44 #3 0xffff0000d2a13018 at aw_mmc_set_tran_settings+0x584 #r/local/lib/qt5 4 0xffff000000038a98 at mmc_cam_sim_default_action+0x154 #5 0xf/usr/local/llvm1fff000000009bb0 at xpt_action_default+0xcac #6 0xffff000000008e0/lib /usr/locald4 at xpt_action+0x270 #7 0xffff00000003b160 at sdda_start_init/llvm80/lib _task+0x1264 #8 0xffff000000419f64 at taskqueue_run_locked+0x188 #9 0xffff00000041ae78 at taskqueue_thread_loop+0xc8 #10 0xffff0000003730a0 at fork_exit+0x74 #11 0xffff0000006b6b9c at fork_trampoline+0x14 We need to do that in a taskqueue (or anything async). -- You are receiving this mail because: You are the assignee for the bug.