9a9740469f
kcov: move thread attach from open to start
...
The current kcov code attaches a kcov object to the thread which opened
it. This is not desirable, as syzkaller opens /dev/kcov in a parent
process and passes it down to the child.
Move the thread attachment from open() time to start time.
2026-10-08 18:42:25 -03:00
bb555d0620
dpc: make dpc queues FIFO
2026-10-07 23:00:21 +03:00
91491d825b
kernel: remove the list_t alias since it's just a typedef for node
2026-10-07 14:08:36 +03:00
9cffe521f3
kernel: use circular lists in various places
2026-10-07 10:32:08 +03:00
513faa92c7
kernel: use list.h for scheduling run queues
2026-10-07 10:24:50 +03:00
3894be1a15
kernel: use list.h for DPC queues
2026-10-07 10:23:18 +03:00
e4a4896b4b
kcov: initial implementation
...
Implement a device (/dev/kcov) that exposes coverage info for the
kernel. This will be especially useful for coverage-based fuzzing (e.g.
syzkaller).
Exclude a lot of functions which would crash/otherwise interfere in the
coverage, including only processing coverage callbacks when not handling
an irq.
2026-10-06 11:51:02 -03:00
011309d43d
cpu: add irq depth counting
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Add a way of checking if a cpu is in the middle of handling an irq and
how deep it is into it. This will allow for future code to conditionally
run only in/outside interrupts.
2026-10-06 11:51:01 -03:00
0cdd03eba8
smp: fix race between cpu exposure and smp init
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The SMP code exposes that a cpu woke up before it is properly
initialized in sched_ap_entry(). Fix this by initializing it first,
exposing it and then stopping the bootstrap thread.
2026-10-06 11:51:01 -03:00
1ed159489d
scheduler: only run load balance when appropriate
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Prevent the load balancer from balancing when running uniprocessor
machines and when not all CPUs are online yet.
This prevents a race between ap initialization and load balancing.
2026-10-06 11:51:00 -03:00
d214326e8e
print: add nouserprint argument
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For some usecases, silencing syscall_print()s is ideal. A good example
of that is syzkaller, which uses logs to detect crashes and a badly
timed syscall_print() could interfere.
Add a nouserprint argument which skips printing on syscall_print().
2026-10-06 11:51:00 -03:00
e8da0eba6a
statvfs: handle vnodes without a vfs
2026-10-06 11:50:58 -03:00
68af759f20
Merge pull request #43 from wnsntgs/Kernel/Sched/NanosleepTimerFix
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Fix timer cleanup in interrupted nanosleep
2026-09-23 15:09:28 -03:00
6780626f29
kernel: cancel interrupted nanosleep timer without remaining pointer
2026-09-23 20:48:29 +03:00
c347afc761
sched: if last cpu is idle, run on it
2026-09-19 12:50:00 -03:00
7a533242ad
scheduler: make idle cpus steal work
2026-09-16 00:22:05 -03:00
74c0bb2450
sched: actually set cpus as idle
2026-09-15 23:19:56 -03:00
3a421a58ad
futex: style
2026-09-15 15:06:16 -03:00
58d2e468da
futex: refactor and optimize
2026-09-15 14:57:19 -03:00
cdee765643
raw sockets: make creating them a privileged operation
2026-09-14 14:03:39 -03:00
d1cc050d76
sched: fix race on thread switching
2026-09-14 13:21:47 -03:00
3eaca91ff1
vfs: properly sync metadata
2026-09-14 10:11:31 -03:00
66b0cb9076
sockets: expose raw sockets to userspace
2026-09-10 17:56:54 -03:00
79752fb5e0
sock: pass protocol to sockets
2026-09-10 16:41:21 -03:00
1b4e257793
work: initial implementation
2026-09-08 23:37:19 -03:00
d7343e7b55
scheduler: rework load balancing locking
2026-08-17 21:47:00 -03:00
7a03f3cb0f
jobctl: fix ctty stealing
2026-08-14 12:22:14 -03:00
65358e6705
sysctl: SYS_CTL_HW_CPUS_ONLINE
2026-08-13 00:43:15 -03:00
afd9d8d3a0
rename: RENAME_NOREPLACE
2026-07-14 16:37:48 -03:00
1512b2f3c6
mm: properly implement page locking
2026-07-08 01:37:12 -03:00
57879f48da
thread: fix release of proc refcounts on multithreaded applications
2026-07-07 17:10:21 -03:00
f46d85fe6d
socket: fix close shutdown properly
2026-07-07 16:49:45 -03:00
c05163f191
socket: zero addresses on accept/recv by default
2026-07-07 11:24:44 -03:00
bf03d99211
getsockname: remove print
2026-07-07 01:14:49 -03:00
7f8fd07f39
sock: sock_copy_addr_to_user
2026-07-05 16:16:05 -03:00
239c267ed3
mm: rename vmm api to mm
2026-07-01 15:00:46 -03:00
d890eb5fb2
mm: vmmcache -> mm_cache
2026-07-01 12:25:18 -03:00
6f8700e678
mm: refactor pmm -> page
2026-07-01 11:56:06 -03:00
6a9fee0b41
proc: fix event loop while waiting
2026-06-30 18:43:56 -03:00
7c19244208
signal: fix possible context corruption
2026-06-30 17:37:23 -03:00
99701d2fb9
sched: fix bsp getting higher priority than target during bringup
2026-06-30 17:35:29 -03:00
17334c8533
advlock: general fixes
2026-06-29 11:33:03 -03:00
eb798d24b4
scheduler: copy arguments in checktrampoline to prevent a race
2026-06-29 02:13:37 -03:00
09d7f8cd1d
sysctl: console_lock sysctl
2026-06-29 00:49:11 -03:00
b186bf333d
proc: unlock console on exit if locked by the dying process
2026-06-29 00:46:51 -03:00
73d60efd53
jobctl: jobctl_getsession
2026-06-29 00:45:11 -03:00
85e12f7e7b
stat: fit AT_EMPTY_PATH
2026-06-28 11:45:17 -03:00
b74f36e984
kernel: implement eventfs/eventfd
2026-06-18 01:53:59 -03:00
9194741bd8
signal: fix signal_suspend and restoring signal mask
2026-06-17 23:16:23 -03:00
29bae6bda1
fcntl: stub F_GETLK64
2026-06-17 23:11:13 -03:00
Matheus