Bug 1294902
| Summary: | Kernel crash in rawhide with kernel 4.4.0-0.rc6.git1.1.fc24.x86_64 | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | stan <gryt2> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED NOTABUG | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | gansalmon, gryt2, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-01-12 21:54:19 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
I haven't seen this with later kernels. Perhaps it was fixed? If I continue without seeing this, I'll close the ticket. I'm not seeing it anymore, so I'm closing this ticket. |
Description of problem: Logged in as root at console. While examining a file with less, got kernel crash message. X running, claws mail downloading messages. Version-Release number of selected component (if applicable): 4.4.0-0.rc6.git1.1.fc24.x86_64 How reproducible: I'm not sure. Steps to Reproduce: 1. Run the latest kernel in a rawhide install while logged in to console 2. 3. Actual results: Noticed the crash Expected results: No crash Additional info: [ 3594.057803] [ 3594.057817] =============================== 92,1 Bot[ 3594.057832] [ INFO: suspicious RCU usage. ] [ 3594.058378] 4.4.0-0.rc6.git1.1.fc24.x86_64 #1 Not tainted [ 3594.058960] ------------------------------- [ 3594.059495] lib/rhashtable.c:522 suspicious rcu_dereference_protected() usage! [ 3594.060099] [ 3594.060099] other info that might help us debug this: [ 3594.060099] [ 3594.061794] [ 3594.061794] rcu_scheduler_active = 1, debug_locks = 0 [ 3594.062976] 2 locks held by lsof/29487: [ 3594.063561] #0: (&p->lock){+.+.+.}, at: [<ffffffff8129f39c>] seq_read+0x4c/0x3e0 [ 3594.064199] #1: (&(&ht->lock)->rlock){+.+...}, at: [<ffffffff8143fc1d>] rhashtable_walk_init+0x5d/0xf0 [ 3594.064848] [ 3594.064848] stack backtrace: [ 3594.066126] CPU: 2 PID: 29487 Comm: lsof Not tainted 4.4.0-0.rc6.git1.1.fc24.x86_64 #1 [ 3594.066780] Hardware name: To be filled by O.E.M. To be filled by O.E.M./M5A97 LE R2.0, BIOS 2501 04/09/2014 [ 3594.067491] 0000000000000000 000000001485dba8 ffff88030863bd08 ffffffff81427e09 [ 3594.068177] ffff88033d820000 ffff88030863bd38 ffffffff81106a47 ffff88031d64dc08 [ 3594.068900] ffff88042b68c000 ffff88042b68c160 ffff880035a38620 ffff88030863bd68 [ 3594.069607] Call Trace: [ 3594.070345] [<ffffffff81427e09>] dump_stack+0x4b/0x72 [ 3594.071085] [<ffffffff81106a47>] lockdep_rcu_suspicious+0xd7/0x110 [ 3594.071805] [<ffffffff8143fc9d>] rhashtable_walk_init+0xdd/0xf0 [ 3594.072578] [<ffffffff8176e9f6>] netlink_walk_start+0x36/0x70 [ 3594.073362] [<ffffffff8176ef75>] netlink_seq_start+0x25/0x60 [ 3594.074103] [<ffffffff8129f4da>] seq_read+0x18a/0x3e0 [ 3594.074877] [<ffffffff812f2032>] proc_reg_read+0x42/0x70 [ 3594.076000] [<ffffffff81275b17>] __vfs_read+0x37/0x100 [ 3594.077447] [<ffffffff8139dfc3>] ? security_file_permission+0xa3/0xc0 [ 3594.078925] [<ffffffff81276629>] vfs_read+0x89/0x130 [ 3594.080396] [<ffffffff812773a8>] SyS_read+0x58/0xd0 [ 3594.081888] [<ffffffff818800f2>] entry_SYSCALL_64_fastpath+0x12/0x76