Tool/software: Linux
Hello,
I am seeing an occasional kernel panic, similar to that reported elsewhere.
[ 27.756757] Unable to handle kernel NULL pointer dereference at virtual address 00000020 [ 27.767878] pgd = c0004000 [ 27.770705] [00000020] *pgd=00000000 [ 27.784138] Internal error: Oops: 17 [#1] PREEMPT ARM [ 27.784143] Modules linked in: wl18xx wlcore sensedaq_driver(O) sense_multicolor_led(O) wlcore_sdio [ 27.784170] CPU: 0 PID: 5 Comm: kworker/u2:0 Tainted: G O 4.14.79-rt47 #1 [ 27.784173] Hardware name: Generic AM33XX (Flattened Device Tree) [ 27.784311] Workqueue: wl12xx_wq wl1271_netstack_work [wlcore] [ 27.784317] task: db451800 task.stack: db460000 [ 27.784336] PC is at ieee80211_scan_rx+0xc0/0x150 [ 27.784339] LR is at 0x79c [ 27.784343] pc : [<c06e7790>] lr : [<0000079c>] psr: a0070113 [ 27.784347] sp : db461d70 ip : 00000000 fp : db461e4c [ 27.784351] r10: 00000000 r9 : 00000000 r8 : da8a0800 [ 27.784355] r7 : 00000000 r6 : daaed300 r5 : d9a244c0 r4 : d9925040 [ 27.784360] r3 : ac34feed r2 : 0000dba8 r1 : 00000197 r0 : ac34f6ec [ 27.784366] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 27.784371] Control: 10c5387d Table: 9a990019 DAC: 00000051 [ 27.784376] Process kworker/u2:0 (pid: 5, stack limit = 0xdb460210) [ 27.784381] Stack: (0xdb461d70 to 0xdb462000) [ 27.784389] 1d60: db461db4 db461d80 c0159fe0 c0159e84 [ 27.784398] 1d80: d9925064 000000be 00000000 c014469c 00000000 db511100 00000002 00000001 [ 27.784408] 1da0: db461e60 c0b133d8 db461ddc db461db8 c015a06c c015c594 db461de4 00002000 [ 27.784418] 1dc0: db511100 c0b4dc10 00000008 db451800 db461e04 db461de0 c01507b4 c0161394 [ 27.784427] 1de0: db451830 c0b13408 0555c018 00000004 00001b58 dad54f88 db461e2c db461e08 [ 27.784437] 1e00: c0149408 c07276b0 c0b13408 dad34030 010b3e8c 00000000 db451830 00000001 [ 27.784446] 1e20: db461e6c db461e30 daaed300 d9a244c0 d9925040 00000000 da8a0800 00000000 [ 27.784456] 1e40: db461ed4 db461e50 c06fe9d4 c06e76dc db451830 dad34030 db451800 00000000 [ 27.784465] 1e60: db461e9c 00000000 c014a614 bf043a04 00000000 c0b133d8 00000001 00000000 [ 27.784474] 1e80: daaed300 d9a244c0 00000000 00000000 00000000 00000000 00000010 00000010 [ 27.784483] 1ea0: 00000000 00000000 db461ed4 d9a24f20 daaed300 d9a250e8 d9a244c0 da8a0800 [ 27.784493] 1ec0: 00000000 00000088 db461ef4 db461ed8 bf02327c c06fe4c8 d9a251d4 d9a24f20 [ 27.784502] 1ee0: db405000 00000000 db461f0c db461ef8 bf0232a0 bf023218 db435080 d9a251d4 [ 27.784512] 1f00: db461f44 db461f10 c013974c bf023290 db461f2c db461f20 c013abe4 db435080 [ 27.784522] 1f20: db405000 db405000 c0b18fc0 db405028 db435098 00000088 db461f74 db461f48 [ 27.784531] 1f40: c013a710 c01395a0 00000000 db430680 db4305c0 db460000 00000000 db435080 [ 27.784541] 1f60: c013a468 db44fe8c db461fac db461f78 c013f014 c013a474 db430698 db430698 [ 27.784550] 1f80: db461fac db4305c0 c013eed4 00000000 00000000 00000000 00000000 00000000 [ 27.784558] 1fa0: 00000000 db461fb0 c0107310 c013eee0 00000000 00000000 00000000 00000000 [ 27.784567] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 27.784575] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [ 27.784577] Backtrace: [ 27.784599] [<c06e76d0>] (ieee80211_scan_rx) from [<c06fe9d4>] (ieee80211_rx_napi+0x518/0x7cc) [ 27.784609] r9:00000000 r8:da8a0800 r7:00000000 r6:d9925040 r5:d9a244c0 r4:daaed300 [ 27.784665] [<c06fe4bc>] (ieee80211_rx_napi) from [<bf02327c>] (wl1271_flush_deferred_work+0x70/0x78 [wlcore]) [ 27.784675] r10:00000088 r9:00000000 r8:da8a0800 r7:d9a244c0 r6:d9a250e8 r5:daaed300 [ 27.784678] r4:d9a24f20 [ 27.784767] [<bf02320c>] (wl1271_flush_deferred_work [wlcore]) from [<bf0232a0>] (wl1271_netstack_work+0x1c/0x2c [wlcore]) [ 27.784773] r7:00000000 r6:db405000 r5:d9a24f20 r4:d9a251d4 [ 27.784827] [<bf023284>] (wl1271_netstack_work [wlcore]) from [<c013974c>] (process_one_work+0x1b8/0x304) [ 27.784832] r5:d9a251d4 r4:db435080 [ 27.784842] [<c0139594>] (process_one_work) from [<c013a710>] (worker_thread+0x2a8/0x454) [ 27.784851] r10:00000088 r9:db435098 r8:db405028 r7:c0b18fc0 r6:db405000 r5:db405000 [ 27.784854] r4:db435080 [ 27.784868] [<c013a468>] (worker_thread) from [<c013f014>] (kthread+0x140/0x158) [ 27.784876] r10:db44fe8c r9:c013a468 r8:db435080 r7:00000000 r6:db460000 r5:db4305c0 [ 27.784880] r4:db430680 r3:00000000 [ 27.784896] [<c013eed4>] (kthread) from [<c0107310>] (ret_from_fork+0x14/0x24) [ 27.784904] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c013eed4 [ 27.784907] r4:db4305c0 [ 27.784916] Code: e1d430b8 e0233002 e1903003 0a000002 (e59c3020) [ 28.211510] ---[ end trace 0000000000000002 ]---
For reference:
[ 5.632437] wlcore: wl18xx HW: 183x or 180x, PG 2.2 (ROM 0x11)
[ 5.642934] wlcore: loaded
[ 14.660557] wlcore: PHY firmware version: Rev 8.2.0.0.242
[ 14.744510] wlcore: firmware booted (Rev 8.9.0.0.79)
This is using the R8.7 SP3 package. I don't have more details about what was happening at the time of the panic, but given that the uptime was only 27 seconds, I suspect that the machine was probably in the process of associating with WiFi at the time.
Please advise on severity and next steps.
