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Reply to notarytool crashes with SIGBUS mid-upload (EXC_BAD_ACCESS, stack guard fault) on nio.nioTransportServices.connectionchannel thread
[quote='906369022, zertour, /thread/847649?answerId=906369022#906369022, /profile/zertour'] Here's the bug number: FB24905316 [/quote] Thanks. Looking at those crash reports it’s clear that you’re not the first person to hit this crash. See this message. I submitted your zip archive and it worked for me. Moreover, you’re running the same tool version as I am: % xcrun notarytool --version 1.1.3 (42) My conclusion is that this is being triggered by something environmental. Unfortunately I don’t have enough insight into the notarytool implementation to offer any suggestions as to what that might be. I’m gonna do some digging and get back to you. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: Notarization Tags:
Sep ’26
Reply to Supported way for an arm64 process to map below the 4 GB __PAGEZERO floor?
I sat down to play with this today and I want to share some results. Using Xcode 27.0 on macOS 26.6.1, I created a new app target and then gutted all the app bits, à la Signing a daemon with a restricted entitlement. I then added a main.swift with this code: import Darwin func main() { print(Hello Cruel World!) var addr: vm_address_t = 0x7ffe0000 // Annoyingly, using `vm_page_size` makes Swift concurrency unhappy, so // let’s get this from BSD. let pageSize = vm_size_t(bitPattern: Int(getpagesize())) print(page size: 0x(String(pageSize, radix: 16))) let kr = vm_allocate(mach_task_self_, &addr, pageSize, VM_FLAGS_FIXED) if kr == KERN_SUCCESS { print(did allocate, addr: 0x(String(addr, radix: 16))) } else { print(did not allocate, kr: (kr)) } if false { print(will pause, pid: (getpid())) pause() print(did pause) } } main() On running that, I saw this: Hello Cruel World! page size: 0x4000 did not allocate, kr: 1 where 1 is KERN_INVALID_ADDRESS. So far, so expected. To get this to work I had to change two thi
Topic: App & System Services SubTopic: Core OS Tags:
Sep ’26
Reply to CNSaveRequest fails with 134092 for any contact that has a note (FB23452026)
Error 134092 is a private Core Data error that roughly translates to permission denied. So… [quote='847426021, takaaki024, /thread/847426, /profile/takaaki024'] is com.apple.developer.contacts.notes required to update any contact that merely has a note, even when the app never reads or writes notes? [/quote] Yes. And I agree that this is weird, so my next step would’ve been to suggest that you file a bug about it, but I see that you’ve already done that (FB23452026). Thanks! Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: General Tags:
Sep ’26
Reply to Supported filesystem quota boundary for VZMacOSInstaller temporary writes
[quote='845542021, sv-vm-dev, /thread/845542, /profile/sv-vm-dev'] Is there a supported mechanism to select or constrain the filesystem for all VZMacOSInstaller … ? [/quote] Virtualization doesn’t not support anything like this. If you’d like to see such support added in the future, I encourage you to file an enhancement request describing your requirements. And if you file such an ER, please post your bug number, just for the record. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Core OS Tags:
Sep ’26
Reply to Can guestDidStopVirtualMachine distinguish clean Linux shutdown from panic/watchdog/emergency stop?
So I want to focus on this bit: [quote='845624021, Borek504, /thread/845624, /profile/Borek504'] Can guestDidStopVirtualMachine also be emitted after panic … ? [/quote] From the perspective of the host, this is very much up to the guest. A typical operating system doesn’t shutdown after a panic. Rather, it either spins or restarts. Both of those are the guest’s concern, and not visible to the host. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Core OS Tags:
Sep ’26
Reply to MacOS 27 EULA: Written agreement to run more than 2 VMs per machine?
I’d like to clarify your concern here. Are you reading that passage as limiting the count of the number of guests, both Apple and non-Apple? So, for example, using Containerization to run three different Linux guests would be a problem? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Core OS Tags:
Sep ’26
Reply to Apple Distribution signature fails its designated requirement — possible Unicode normalization issue
[quote='906211022, J_unicode_forever, /thread/843700?answerId=906211022#906211022, /profile/J_unicode_forever'] Could you please provide an update on the status of this issue … ? [/quote] If the issue gets fixed, you should be notified via your bug report in Feedback Assistant (FB24633162). [quote='906211022, J_unicode_forever, /thread/843700?answerId=906211022#906211022, /profile/J_unicode_forever'] Could you please provide … an indication of when a fix can be expected? [/quote] No, sorry, I can’t talk about The Future™. See tip 3 in Quinn’s Top Ten DevForums Tips [quote='906211022, J_unicode_forever, /thread/843700?answerId=906211022#906211022, /profile/J_unicode_forever'] As mentioned previously, changing our company name is not an option. [/quote] I’m not suggesting that you change your company name, but rather that you you request that DevPrograms change your team name to remove the diacriticals. Normally your team name exactly matches your company name, but I believe that DevPrograms can make exceptions
Sep ’26
Reply to Can't add /Users/wes/code/wesbiggs/appclip-autologin/app/autologin.xcodeproj Entitlement com.apple.developer.pass-type-identifiers not found and could not be included in profile. This likely is not a valid entitlement and should be removed from your
I was hoping that one of the folks who filed bugs about this would respond, because they can see the status of their own bugs. But I guess not. So I took a look at FB22888282 and FB24678082 and they remain unresolved. If you want to track the status of this yourself, I recommend that you file your own bug and ask that it be marked as a dup of FB22888282. That way you’ll be notified it that bug gets fixed. I talk more about that idea in Bug Reporting: How and Why? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Wallet Tags:
Sep ’26
Reply to Xcode can't debug C++ program when configured to use Terminal instead of console
[quote='906219022, PERockwell, /thread/847185?answerId=906219022#906219022, /profile/PERockwell'] I submitted a bug report via Feedback Assistant [/quote] Thanks. What was that bug number? After zenning on this overnight I have a couple of other alternatives for you. First, you can tweak your code to do something like this: fprintf(stderr, waiting for the debugger, pid: %dn, getpid()); pause(); Then run your program from Terminal and, back in Xcode, choose Debug > Attach to Process > [your tool name]. The act of attaching generates a signal which breaks you out of the pause system call. Alternatively, go to the Info tab of the scheme editor and select Launch > “Wait for the executable to be launch”. Then choose Product > Run and, in Terminal, run the tool. Both of these options are less ugly, but also less convenient, than my previous suggestion. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Sep ’26
Reply to CSSMERR_TP_NOT_TRUSTED for Apple system apps and “No keychain is available” on macOS Tahoe 26.7
If a command like this fails: % codesign -v -vvv --deep --strict /System/Applications/Utilities/Terminal.app /System/Applications/Utilities/Terminal.app: valid on disk /System/Applications/Utilities/Terminal.app: satisfies its Designated Requirement then your overall system has a problem that’s unrelated to developer code signing. The right folks to talk to about that is Apple Support. In such cases I generally point folks in the direction of their Apple Support Community. However, before I do that, I have one suggestion: If you create a new test user account and log in as that, does Terminal still fail to verify? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: General
Sep ’26
Reply to Appropriate API for measuring device-wide network traffic on iOS
[quote='847529021, hitoshi0002, /thread/847529, /profile/hitoshi0002'] Would NEPacketTunnelProvider be an appropriate API for this use case? [/quote] No. Packet tunnel providers are intended to be used for creating VPN products. TN3120 Expected use cases for Network Extension packet tunnel providers discusses that point in general. I’m not aware of any good way to achieve your overall goal. This question comes up from time-to-time, so I have a post dedicated to it: Network Interface Statistics Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Sep ’26
Reply to Supported lifecycle and termination guarantees for an embedded macOS XPC service
[quote='847615021, Alihan1, /thread/847615, /profile/Alihan1'] Does the documented client-lifetime relationship cover client termination, including SIGKILL, during service startup before the first reply? [/quote] Yes. There’s an obvious race condition here, leaving potentially four potential outcomes: The service does not start. The service starts but doesn’t get any messages. The service starts but the connection is invalidated before it replies. (Note that this can only happen in the escaping case, see below, because messages to the service are serialised on the services queue.) The service starts and replies but the reply fails. There’s no explicit indication of this, although the service will see the connection be invalidated. [quote='847615021, Alihan1, /thread/847615, /profile/Alihan1'] Does it also cover an already running service that is blocked or stopped with SIGSTOP? [/quote] SIGSTOP isn’t part of the XPC service world and you should not be using it in this context. As to what happens if the servic
Sep ’26
Reply to notarytool crashes with SIGBUS mid-upload (EXC_BAD_ACCESS, stack guard fault) on nio.nioTransportServices.connectionchannel thread
Please file a bug about this, making sure to attach: An example .ips crash report. A copy of the submission that’s triggered the issue. A sysdiagnose log taken shortly after reproducing it. Once you’re done, reply here with number and I’ll take another look. IMPORTANT Reply as a reply, rather than as a comment. See Quinn’s Top Ten DevForums Tips for this and other titbits. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: Notarization Tags:
Sep ’26
Reply to Notarization submissions stuck "In Progress" then disappear — x64 only, arm64 unaffected
notarytool itself SIGBUSes mid-upload Well, that’s not good. But you started a new thread for this, so I’ll respond in more detail over there shortly. ps It’s better to reply as a reply, rather than in the comments; see Quinn’s Top Ten DevForums Tips for this and other titbits. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: Notarization Tags:
Sep ’26
Reply to notarytool crashes with SIGBUS mid-upload (EXC_BAD_ACCESS, stack guard fault) on nio.nioTransportServices.connectionchannel thread
[quote='906369022, zertour, /thread/847649?answerId=906369022#906369022, /profile/zertour'] Here's the bug number: FB24905316 [/quote] Thanks. Looking at those crash reports it’s clear that you’re not the first person to hit this crash. See this message. I submitted your zip archive and it worked for me. Moreover, you’re running the same tool version as I am: % xcrun notarytool --version 1.1.3 (42) My conclusion is that this is being triggered by something environmental. Unfortunately I don’t have enough insight into the notarytool implementation to offer any suggestions as to what that might be. I’m gonna do some digging and get back to you. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: Notarization Tags:
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Sep ’26
Reply to Supported way for an arm64 process to map below the 4 GB __PAGEZERO floor?
I sat down to play with this today and I want to share some results. Using Xcode 27.0 on macOS 26.6.1, I created a new app target and then gutted all the app bits, à la Signing a daemon with a restricted entitlement. I then added a main.swift with this code: import Darwin func main() { print(Hello Cruel World!) var addr: vm_address_t = 0x7ffe0000 // Annoyingly, using `vm_page_size` makes Swift concurrency unhappy, so // let’s get this from BSD. let pageSize = vm_size_t(bitPattern: Int(getpagesize())) print(page size: 0x(String(pageSize, radix: 16))) let kr = vm_allocate(mach_task_self_, &addr, pageSize, VM_FLAGS_FIXED) if kr == KERN_SUCCESS { print(did allocate, addr: 0x(String(addr, radix: 16))) } else { print(did not allocate, kr: (kr)) } if false { print(will pause, pid: (getpid())) pause() print(did pause) } } main() On running that, I saw this: Hello Cruel World! page size: 0x4000 did not allocate, kr: 1 where 1 is KERN_INVALID_ADDRESS. So far, so expected. To get this to work I had to change two thi
Topic: App & System Services SubTopic: Core OS Tags:
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Sep ’26
Reply to CNSaveRequest fails with 134092 for any contact that has a note (FB23452026)
Error 134092 is a private Core Data error that roughly translates to permission denied. So… [quote='847426021, takaaki024, /thread/847426, /profile/takaaki024'] is com.apple.developer.contacts.notes required to update any contact that merely has a note, even when the app never reads or writes notes? [/quote] Yes. And I agree that this is weird, so my next step would’ve been to suggest that you file a bug about it, but I see that you’ve already done that (FB23452026). Thanks! Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: General Tags:
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Sep ’26
Reply to Supported filesystem quota boundary for VZMacOSInstaller temporary writes
[quote='845542021, sv-vm-dev, /thread/845542, /profile/sv-vm-dev'] Is there a supported mechanism to select or constrain the filesystem for all VZMacOSInstaller … ? [/quote] Virtualization doesn’t not support anything like this. If you’d like to see such support added in the future, I encourage you to file an enhancement request describing your requirements. And if you file such an ER, please post your bug number, just for the record. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Core OS Tags:
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Sep ’26
Reply to Can guestDidStopVirtualMachine distinguish clean Linux shutdown from panic/watchdog/emergency stop?
So I want to focus on this bit: [quote='845624021, Borek504, /thread/845624, /profile/Borek504'] Can guestDidStopVirtualMachine also be emitted after panic … ? [/quote] From the perspective of the host, this is very much up to the guest. A typical operating system doesn’t shutdown after a panic. Rather, it either spins or restarts. Both of those are the guest’s concern, and not visible to the host. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Core OS Tags:
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Sep ’26
Reply to MacOS 27 EULA: Written agreement to run more than 2 VMs per machine?
I’d like to clarify your concern here. Are you reading that passage as limiting the count of the number of guests, both Apple and non-Apple? So, for example, using Containerization to run three different Linux guests would be a problem? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Core OS Tags:
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Sep ’26
Reply to Apple Distribution signature fails its designated requirement — possible Unicode normalization issue
[quote='906211022, J_unicode_forever, /thread/843700?answerId=906211022#906211022, /profile/J_unicode_forever'] Could you please provide an update on the status of this issue … ? [/quote] If the issue gets fixed, you should be notified via your bug report in Feedback Assistant (FB24633162). [quote='906211022, J_unicode_forever, /thread/843700?answerId=906211022#906211022, /profile/J_unicode_forever'] Could you please provide … an indication of when a fix can be expected? [/quote] No, sorry, I can’t talk about The Future™. See tip 3 in Quinn’s Top Ten DevForums Tips [quote='906211022, J_unicode_forever, /thread/843700?answerId=906211022#906211022, /profile/J_unicode_forever'] As mentioned previously, changing our company name is not an option. [/quote] I’m not suggesting that you change your company name, but rather that you you request that DevPrograms change your team name to remove the diacriticals. Normally your team name exactly matches your company name, but I believe that DevPrograms can make exceptions
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Sep ’26
Reply to Can't add /Users/wes/code/wesbiggs/appclip-autologin/app/autologin.xcodeproj Entitlement com.apple.developer.pass-type-identifiers not found and could not be included in profile. This likely is not a valid entitlement and should be removed from your
I was hoping that one of the folks who filed bugs about this would respond, because they can see the status of their own bugs. But I guess not. So I took a look at FB22888282 and FB24678082 and they remain unresolved. If you want to track the status of this yourself, I recommend that you file your own bug and ask that it be marked as a dup of FB22888282. That way you’ll be notified it that bug gets fixed. I talk more about that idea in Bug Reporting: How and Why? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Wallet Tags:
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Sep ’26
Reply to Xcode can't debug C++ program when configured to use Terminal instead of console
[quote='906219022, PERockwell, /thread/847185?answerId=906219022#906219022, /profile/PERockwell'] I submitted a bug report via Feedback Assistant [/quote] Thanks. What was that bug number? After zenning on this overnight I have a couple of other alternatives for you. First, you can tweak your code to do something like this: fprintf(stderr, waiting for the debugger, pid: %dn, getpid()); pause(); Then run your program from Terminal and, back in Xcode, choose Debug > Attach to Process > [your tool name]. The act of attaching generates a signal which breaks you out of the pause system call. Alternatively, go to the Info tab of the scheme editor and select Launch > “Wait for the executable to be launch”. Then choose Product > Run and, in Terminal, run the tool. Both of these options are less ugly, but also less convenient, than my previous suggestion. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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Sep ’26
Reply to CSSMERR_TP_NOT_TRUSTED for Apple system apps and “No keychain is available” on macOS Tahoe 26.7
If a command like this fails: % codesign -v -vvv --deep --strict /System/Applications/Utilities/Terminal.app /System/Applications/Utilities/Terminal.app: valid on disk /System/Applications/Utilities/Terminal.app: satisfies its Designated Requirement then your overall system has a problem that’s unrelated to developer code signing. The right folks to talk to about that is Apple Support. In such cases I generally point folks in the direction of their Apple Support Community. However, before I do that, I have one suggestion: If you create a new test user account and log in as that, does Terminal still fail to verify? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: General
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Sep ’26
Reply to Appropriate API for measuring device-wide network traffic on iOS
[quote='847529021, hitoshi0002, /thread/847529, /profile/hitoshi0002'] Would NEPacketTunnelProvider be an appropriate API for this use case? [/quote] No. Packet tunnel providers are intended to be used for creating VPN products. TN3120 Expected use cases for Network Extension packet tunnel providers discusses that point in general. I’m not aware of any good way to achieve your overall goal. This question comes up from time-to-time, so I have a post dedicated to it: Network Interface Statistics Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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Sep ’26
Reply to Supported lifecycle and termination guarantees for an embedded macOS XPC service
[quote='847615021, Alihan1, /thread/847615, /profile/Alihan1'] Does the documented client-lifetime relationship cover client termination, including SIGKILL, during service startup before the first reply? [/quote] Yes. There’s an obvious race condition here, leaving potentially four potential outcomes: The service does not start. The service starts but doesn’t get any messages. The service starts but the connection is invalidated before it replies. (Note that this can only happen in the escaping case, see below, because messages to the service are serialised on the services queue.) The service starts and replies but the reply fails. There’s no explicit indication of this, although the service will see the connection be invalidated. [quote='847615021, Alihan1, /thread/847615, /profile/Alihan1'] Does it also cover an already running service that is blocked or stopped with SIGSTOP? [/quote] SIGSTOP isn’t part of the XPC service world and you should not be using it in this context. As to what happens if the servic
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Sep ’26
Reply to notarytool crashes with SIGBUS mid-upload (EXC_BAD_ACCESS, stack guard fault) on nio.nioTransportServices.connectionchannel thread
Please file a bug about this, making sure to attach: An example .ips crash report. A copy of the submission that’s triggered the issue. A sysdiagnose log taken shortly after reproducing it. Once you’re done, reply here with number and I’ll take another look. IMPORTANT Reply as a reply, rather than as a comment. See Quinn’s Top Ten DevForums Tips for this and other titbits. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: Notarization Tags:
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Sep ’26
Reply to Notarization submissions stuck "In Progress" then disappear — x64 only, arm64 unaffected
notarytool itself SIGBUSes mid-upload Well, that’s not good. But you started a new thread for this, so I’ll respond in more detail over there shortly. ps It’s better to reply as a reply, rather than in the comments; see Quinn’s Top Ten DevForums Tips for this and other titbits. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: Code Signing SubTopic: Notarization Tags:
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Sep ’26
Reply to All records in CloudKit database gone...
Just a quick admin note: I fixed your spelling of CloudKit in this thread’s title. I’ll leave it to the CloudKit experts to talk about your technical issue. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: iCloud Tags:
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Sep ’26