Bug 216405
| Summary: | 5.19.3 rcu_sched detected expedited stalls on CPUs/tasks: task:apparmor_parser | ||
|---|---|---|---|
| Product: | Other | Reporter: | Robert Dinse (nanook) |
| Component: | Loadable Security Modules (LSM) | Assignee: | Other/LSM (other_lsm) |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | Subsystem: | ||
| Regression: | No | Bisected commit-id: | |
I've tried to add the configuration file and the xml file for the kvm/qemu virtual machine but I am getting a post error from Bugzilla. The regression could be elsewhere. Please perform git bisect. https://docs.kernel.org/admin-guide/bug-bisect.html https://ldpreload.com/blog/git-bisect-run https://wiki.gentoo.org/wiki/Kernel_git-bisect It's become clear that this bug is a duplicate of 216399, it has also become clear that this bug was introduced between 5.18.19 which runs totally clean and 5.19.0 through 5.19.6 (so far) which does not. *** This bug has been marked as a duplicate of bug 216399 *** |
[ 6.832919] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 4-... } 4 jiffies s: 101 root: 0x10/. [ 6.832940] rcu: blocking rcu_node structures (internal RCU debug): [ 6.832943] Task dump for CPU 4: [ 6.832945] task:apparmor_parser state:R running task stack: 0 pid: 546 ppid: 530 flags:0x00000008 [ 6.832949] Call Trace: [ 6.832956] <TASK> [ 6.832960] ? longest_match+0x1c0/0x250 [ 6.832984] ? deflate_slow+0x2d0/0x580 [ 6.832986] ? zlib_deflate+0x172/0x560 [ 6.832988] ? aa_unpack+0x1045/0x1cb0 [ 6.833000] ? aa_replace_profiles+0x9d/0x10b0 [ 6.833003] ? policy_update+0xc4/0x150 [ 6.833006] ? profile_replace+0xaa/0x120 [ 6.833007] ? vfs_write+0xbb/0x260 [ 6.833020] ? ksys_write+0x6b/0xf0 [ 6.833022] ? __x64_sys_write+0x19/0x20 [ 6.833025] ? do_syscall_64+0x58/0x80 [ 6.833041] ? putname+0x57/0x70 [ 6.833048] ? do_sys_openat2+0x86/0x160 [ 6.833050] ? exit_to_user_mode_prepare+0x41/0x1e0 [ 6.833065] ? syscall_exit_to_user_mode+0x1b/0x40 [ 6.833070] ? do_syscall_64+0x67/0x80 [ 6.833072] ? do_syscall_64+0x67/0x80 [ 6.833074] ? exc_page_fault+0x86/0x160 [ 6.833077] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 6.833087] </TASK> This is in a KVM/Qemu guest running Linux 5.19.3 OS Ubuntu 22.04. The host machine is an i7-6700k based system running 5.19.1 OS Ubuntu 22.04. Both compiled with gcc 12.1.0 on an i7-9700k machine.