1 Reply
      Latest reply on Apr 20, 2019 4:13 AM by eskimo
      levili Level 1 Level 1 (0 points)

        {"bug_type":"210","timestamp":"2019-04-13 09:04:24.07 +0800","os_version":"iPhone OS 12.2 (16E227)","incident_id":"9419D360-D6FC-44D0-A200-AACFB3F9A42B"}

        {

          "build" : "iPhone OS 12.2 (16E227)",

          "product" : "iPhone10,3",

          "kernel" : "Darwin Kernel Version 18.5.0: Tue Mar  5 19:52:18 PST 2019; root:xnu-4903.252.2~1/RELEASE_ARM64_T8015",

          "incident" : "9419D360-D6FC-44D0-A200-AACFB3F9A42B",

          "crashReporterKey" : "35f1dd31cf51a993ff64f9eb168ba44454782533",

          "date" : "2019-04-13 09:04:13.40 +0800",

          "panicString" : "panic(cpu 0 caller 0xfffffff01944a7cc): mbuf_watchdog: 2 waiters stuck for 15 secs

        21817/21904 mbufs in use:

        21647 mbufs allocated to data

        170 mbufs allocated to packet headers

        87 mbufs allocated to caches

        21502/21504 mbuf 2KB clusters in use

        0/168 mbuf 4KB clusters in use

        0/242 mbuf 16KB clusters in use

        53236 KB allocated to network (approx. 91% in use)

        6124 KB returned to the system

        VM allocation failures: contiguous 0, normal 0, one page 0

        worker thread runs: 796, expansions: 52, cl 558/0, bigcl 0/0, 16k 237/6822

        worker thread last run time: 71964 (15 seconds ago)

        drain routine last run time: 71858 (121 seconds ago)

         

         

        mbuf leak detection table:

        total captured: 29271 (one per 500)

        total allocs outstanding: 222

        new hash recorded: 27884 allocs, 20356 traces

        hash collisions: 212 allocs, 1361 traces

        overwrites: 27180 allocs, 0 traces

        lock conflicts: 0

         

         

        top 5 outstanding traces:

        [1] 81 outstanding alloc(s), 6743 hit(s), 718 collision(s)

        [2] 66 outstanding alloc(s), 534 hit(s), 290 collision(s)

        [3] 29 outstanding alloc(s), 115 hit(s), 0 collision(s)

        [4] 18 outstanding alloc(s), 76 hit(s), 2 collision(s)

        [5] 13 outstanding alloc(s), 18 hit(s), 2 collision(s)

         

         

            trace [1]           trace [2]           trace [3]        trace [4]           trace [5]    

            ------------------  ------------------  ------------------      ------------------  ------------------

        1: 0xfffffff0074c4c8c  0xfffffff0074c4c8c  0xfffffff0074c4c8c  0xfffffff0074c4c8c  0xfffffff0074c4c8c

        2: 0xfffffff00749e5a8  0xfffffff00749e678  0xfffffff00749e678  0xfffffff00749e678  0xfffffff00749e5a8

        3: 0xfffffff0074cb818  0xfffffff0074c38fc  0xfffffff0074cb818  0xfffffff0074c38a0  0xfffffff0074c38fc

        4: 0xfffffff007497dc0  0xfffffff00749e540  0xfffffff007497dc0  0xfffffff00749e540  0xfffffff00749e540

        5: 0xfffffff006bfb2cc  0xfffffff0074cb818  0xfffffff006bfb2cc  0xfffffff0074cb818  0xfffffff0074cb818

        6: 0xfffffff006bfb070  0xfffffff007497dc0  0xfffffff006bfb070  0xfffffff007497dc0  0xfffffff007497dc0

        7: 0xfffffff006c07030  0xfffffff006bfb2cc  0xfffffff006c07030  0xfffffff006bfb2cc  0xfffffff006bfb2cc

        8: 0xfffffff006c06d10  0xfffffff006bfb070  0xfffffff006c06d10  0xfffffff006bfb070  0xfffffff006bfb070

        9: 0xfffffff0075bbe14  0xfffffff006c07030  0xfffffff0075bbe14  0xfffffff006c07030  0xfffffff006c07030

        10: 0xfffffff0075bb708  0xfffffff006c06d10  0xfffffff0075bb708  0xfffffff006c06d10  0xfffffff006c06d10

        11:                     0xfffffff0075bbe14                      0xfffffff0075bbe14  0xfffffff0075bbe14

        12:                     0xfffffff0075bb708                      0xfffffff0075bb708  0xfffffff0075bb708

        13:                                                                                                   

        14:                                                                                                   

        15:                                                                                                   

        16:                                                                                                   

         

         

        Debugger message: panic

        Memory ID: 0x1

        OS version: 16E227

        Kernel version: Darwin Kernel Version 18.5.0: Tue Mar  5 19:52:18 PST 2019; root:xnu-4903.252.2~1/RELEASE_ARM64_T8015

        KernelCache UUID: 1C047665002578B524F6F61EAEC95660

        Kernel UUID: 917345B1-8E9D-3737-B13C-698AFAD3322A

        iBoot version: iBoot-4513.250.288

        secure boot?: YES

        Paniclog version: 12

        Kernel slide:     0x0000000011f84000

        Kernel text base: 0xfffffff018f88000

        Epoch Time:        sec       usec

          Boot    : 0x5cb007a1 0x000a48db

          Sleep   : 0x5cb1336e 0x00028f77

          Wake    : 0x5cb1336e 0x000b3319

          Calendar: 0x5cb13572 0x0008d92f

         

         

        Panicked task 0xffffffe0039350e0: 216 pages, 3 threads: pid 122: mDNSResponder

        Panicked thread: 0xffffffe003f14fc0, backtrace: 0xffffffe0005aac00, tid: 1772

            lr: 0xfffffff01909671c  fp: 0xffffffe0005aac90

            lr: 0xfffffff01918a190  fp: 0xffffffe0005aadc0

            lr: 0xfffffff019061610  fp: 0xffffffe0005aadd0

            lr: 0xfffffff019095cd8  fp: 0xffffffe0005ab140

            lr: 0xfffffff019096050  fp: 0xffffffe0005ab180

            lr: 0xfffffff019095ea4  fp: 0xffffffe0005ab1a0

            lr: 0xfffffff01944a7cc  fp: 0xffffffe0005ab390

            lr: 0xfffffff019448080  fp: 0xffffffe0005ab430

            lr: 0xfffffff019422540  fp: 0xffffffe0005ab4d0

            lr: 0xfffffff0194478fc  fp: 0xffffffe0005ab5a0

            lr: 0xfffffff019422540  fp: 0xffffffe0005ab640

            lr: 0xfffffff01944f818  fp: 0xffffffe0005ab720

            lr: 0xfffffff01922fd1c  fp: 0xffffffe0005ab780

            lr: 0xfffffff019231a38  fp: 0xffffffe0005ab7d0

            lr: 0xfffffff019233c74  fp: 0xffffffe0005ab840

            lr: 0xfffffff0192dacf8  fp: 0xffffffe0005ab8b0

            lr: 0xfffffff01931bbd0  fp: 0xffffffe0005ab8e0

            lr: 0xfffffff0194583dc  fp: 0xffffffe0005ab970

            lr: 0xfffffff019458818  fp: 0xffffffe0005ab9b0

            lr: 0xfffffff0193cfb94  fp: 0xffffffe0005aba30

            lr: 0xfffffff0193cf724  fp: 0xffffffe0005abb00

            lr: 0xfffffff0193d30d8  fp: 0xffffffe0005abb50

            lr: 0xfffffff01918a65c  fp: 0xffffffe0005abc80

            lr: 0xfffffff019061610  fp: 0xffffffe0005abc90

            lr: 0x0000000212b92f1c  fp: 0x0000000000000000

         

         

        ",

          "panicFlags" : "0x2",

          "otherString":" ** Stackshot Succeeded ** Bytes Traced 470048 ** ",

            "memoryStatus":{

                "compressorSize":25476,

                "compressions":2021079,

                "decompressions":1242276,

                "busyBufferCount":0,

                "pageSize":16384,

                "memoryPressure":false,

                "memoryPages":{

                    "active":49489,

                    "throttled":0,

                    "fileBacked":42180,

                    "wired":28411,

                    "purgeable":925,

                    "inactive":45867,

                    "free":17061,

                    "speculative":3680

                }

            },

        • Re: iOS 12 system reboot  mbuf_watchdog: 2 waiters stuck for 15 secs
          eskimo Apple Staff Apple Staff (11,475 points)

          You haven’t actually asked a question here, so I’m going to give you a very generic response…

          In general, iOS should never kernel panic.  If you see such a panic, that’s always bugworthy.  Please file a bug about this, making to sure to include whatever information you might have about reproducing the problem.

          Share and Enjoy

          Quinn “The Eskimo!”
          Apple Developer Relations, Developer Technical Support, Core OS/Hardware
          let myEmail = "eskimo" + "1" + "@apple.com"