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2021-10-04Merge release-20210927.0-28-g6c1237da0 (automated)gVisor bot
2021-10-04Reply to invalid ACKs even when accept queue is fullArthur Sfez
Before checking if there is space in the accept queue, the listener should verify that the cookie is valid. If it is not, instead of silently dropping the packet, reply with an RST. Fixes #6683 PiperOrigin-RevId: 400807346
2021-10-02Merge release-20210921.0-58-g3bab5e566 (automated)gVisor bot
2021-10-01Read lock when getting connectionsGhanan Gowripalan
We should avoid taking the write lock to avoid contention when looking for a packet's tracked connection. No need to reap timed out connections when looking for connections as the reaper (which runs periodically) will handle that. PiperOrigin-RevId: 400322514
2021-10-01Merge release-20210921.0-57-g51c4fbb84 (automated)gVisor bot
2021-10-01Drop ConnTrack.handlePacketGhanan Gowripalan
Move the hook specific logic to the IPTables hook functions. This lets us avoid having to perform checks on the hook to determine what action to take. Later changes will drop the need for handlePacket's return value, reducing the value of this function that all hooks call into. PiperOrigin-RevId: 400298023
2021-10-01Merge release-20210921.0-56-g6e83c4b75 (automated)gVisor bot
2021-10-01Drop conn.tcbHookGhanan Gowripalan
...as the packet's direction gives us the information that tcbHook is used to derive. PiperOrigin-RevId: 400280102
2021-10-01Merge release-20210921.0-55-g8603cce51 (automated)gVisor bot
2021-10-01Annotate checklocks on mutex protected fieldsGhanan Gowripalan
...to catch lock-related bugs in nogo tests. Updates #6566. PiperOrigin-RevId: 400265818
2021-10-01Merge release-20210921.0-54-geac4d9ab2 (automated)gVisor bot
2021-10-01Merge pull request #6551 from sudo-sturbia:msgqueue/procfsgVisor bot
PiperOrigin-RevId: 400258924
2021-10-01Merge release-20210921.0-52-g788bbc290 (automated)gVisor bot
2021-10-01Drop IPTables.checkPacketsGhanan Gowripalan
...and have `CheckOutputPackets`, `CheckPostroutingPackets` call their equivalent methods that operate on a single packet buffer directly. This is so that the `Check{Output, Postrouting}Packets` methods may leverage any hook-specific work that `Check{Output, Postrouting}` may perform. Note: Later changes will add hook-specific logic to the `Check{Output, Postrouting}` methods. PiperOrigin-RevId: 400255651
2021-10-01Merge release-20210921.0-51-g807337000 (automated)gVisor bot
2021-10-01Let connection handle tracked packetsGhanan Gowripalan
...to save a call to `ConnTrack.connFor` when callers already have a reference to the ConnTrack entry. PiperOrigin-RevId: 400244955
2021-10-01Merge release-20210921.0-48-g0db2ab932 (automated)gVisor bot
2021-10-01Move pendingEndpoints to acceptQueueTamir Duberstein
This obsoletes the need for the pendingMu and pending, since they are redundant with acceptMu and pendingAccepted. Fixes #6671. PiperOrigin-RevId: 400162391
2021-09-30Merge release-20210921.0-46-g9fff9469a (automated)gVisor bot
2021-09-30kernel: print PID in addition to TID in task log messagesAndrei Vagin
For multithreads processes, it is hard to read logs without knowing task pids. And let's print a decimal return codeo for syscalls. A hex return code are usefull for system calls that return addresses. For other syscalls, the decimal form is more readable. PiperOrigin-RevId: 400035449
2021-09-29Merge release-20210921.0-42-gf4340b0c9 (automated)gVisor bot
2021-09-29Avoid comparisons to zero value of acceptQueueTamir Duberstein
PiperOrigin-RevId: 399765414
2021-09-29Merge release-20210921.0-41-g36b36a8a7 (automated)gVisor bot
2021-09-29Rename accepted -> acceptQueueTamir Duberstein
Rename cap -> capacity to avoid collision with the builtin. PiperOrigin-RevId: 399753630
2021-09-29Merge release-20210921.0-40-g5aa37994c (automated)gVisor bot
2021-09-29Remove syncRcvdCountTamir Duberstein
This is redundant with listenContext.pendingEndpoints PiperOrigin-RevId: 399722472
2021-09-29Merge release-20210921.0-39-g65698b627 (automated)gVisor bot
2021-09-28Move `safecopy.ReplaceSignalHandler` into `sighandling` package.Etienne Perot
PiperOrigin-RevId: 399560357
2021-09-28Merge release-20210921.0-38-gfa4c30c63 (automated)gVisor bot
2021-09-28Inline handleSynSegmentTamir Duberstein
This function has only one caller. Remove segment reference count manipulation since it is only used synchronously. PiperOrigin-RevId: 399525343
2021-09-28Merge release-20210921.0-37-ged083bac4 (automated)gVisor bot
2021-09-28Support naive Masquerade NAT targetGhanan Gowripalan
* Does not accept a port range (Issue #5772). * Does not support checking for tuple conflits (Issue #5773). PiperOrigin-RevId: 399524088
2021-09-27Merge release-20210921.0-36-ge251f6cc5 (automated)gVisor bot
2021-09-27Move `sighandling` package out of `sentry`.Etienne Perot
PiperOrigin-RevId: 399295737
2021-09-27Merge release-20210921.0-35-gdc64617d5 (automated)gVisor bot
2021-09-27Implement S/R for StatsTamir Duberstein
PiperOrigin-RevId: 399276940
2021-09-27Merge release-20210921.0-34-g1fe0a6691 (automated)gVisor bot
2021-09-27Prevent PacketData from being modified.Ayush Ranjan
PacketData should not be modified and should be treated readonly because it represents packet payload. The old DeleteFront method allowed callers to modify the underlying buffer which should not be allowed. Added a way to consume from the PacketData instead of deleting from it. Updated call points to use that instead. Reported-by: syzbot+faee5cb350f769a52d1b@syzkaller.appspotmail.com PiperOrigin-RevId: 399268473
2021-09-27Merge release-20210921.0-33-g455924ee1 (automated)gVisor bot
2021-09-27Store pending endpoints in a setTamir Duberstein
There's no need for synthetic keys here. PiperOrigin-RevId: 399263134
2021-09-27Add procfs files for SysV message queues.Zyad A. Ali
2021-09-24Merge release-20210921.0-30-ge3657847c (automated)gVisor bot
2021-09-24Update the comment for Task.netnsAndrei Vagin
Task.netns can be accessed atomically, so Task.mu isn't needed to access it. PiperOrigin-RevId: 398773947
2021-09-24Merge release-20210921.0-29-gb510c9846 (automated)gVisor bot
2021-09-24Merge pull request #6647 from avagin:task-netnsgVisor bot
PiperOrigin-RevId: 398763161
2021-09-24Merge release-20210921.0-27-g12175748a (automated)gVisor bot
2021-09-23Allow lisafs client to send more data than MaxMessageSize using chunks.Ayush Ranjan
The p9 client does the same. This allows applications to read/write >= 2MB of data. This enables the read write benchmarks to work with lisafs. Updates #5466 PiperOrigin-RevId: 398659947
2021-09-23kernel: allow to access Task.netns without taking Task.muAndrei Vagin
This allows to avoind unnecessary lock-ordering dependencies on task.mu.
2021-09-23Merge release-20210921.0-26-g2b7766333 (automated)gVisor bot
2021-09-23Create the cgroupfs mount point in sysfs.Rahat Mahmood
Create the /sys/fs/cgroup directory when cgroups are available. This creates the empty directory to serve as the mountpoint, actually mounting cgroups is left to the launcher/userspace. This is consistent with Linux behaviour. Without this mountpoint, getdents(2) on /sys/fs indicates an empty directory even if the launcher mounts cgroupfs at /sys/fs/cgroup. The launcher can't create the mountpoint directory since sysfs doesn't support mkdir. PiperOrigin-RevId: 398596698
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