Bug 199476
| Summary: | lockdep warning: sighand->siglock | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Bill Nottingham <notting> |
| Component: | kernel | Assignee: | Dave Jones <davej> |
| Status: | CLOSED RAWHIDE | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | rawhide | CC: | mingo, pfrields, rvokal, wtogami |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-10-28 05:38:02 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 202141 | ||
write_lock_irq(&tasklist_lock);
spin_lock(&oldsighand->siglock);
spin_lock(&newsighand->siglock);
rcu_assign_pointer(current->sighand, newsighand);
recalc_sigpending();
spin_unlock(&newsighand->siglock);
spin_unlock(&oldsighand->siglock);
this'll do it
(fs/exec.c)
Thanks Arjan, fixed in cvs, should be fixed in tomorrows rawhide. |
On bootup: Linux version 2.6.17-1.2416.fc6 (brewbuilder.redhat.com) (gcc version 4.1.1 20060711 (Red H at 4.1.1-8)) #1 SMP Tue Jul 18 17:28:35 EDT 2006 ... e1000: eth0: e1000_watchdog: NIC Link is Up 100 Mbps Full Duplex EXT3-fs: INFO: recovery required on readonly filesystem. EXT3-fs: write access will be enabled during recovery. kjournald starting. Commit interval 5 seconds EXT3-fs: recovery complete. EXT3-fs: mounted filesystem with ordered data mode. ============================================= [ INFO: possible recursive locking detected ] --------------------------------------------- init/1 is trying to acquire lock: (&sighand->siglock){....}, at: [<c047a78a>] flush_old_exec+0x3ae/0x859 but task is already holding lock: (&sighand->siglock){....}, at: [<c047a77a>] flush_old_exec+0x39e/0x859 other info that might help us debug this: 2 locks held by init/1: #0: (tasklist_lock){..--}, at: [<c047a76a>] flush_old_exec+0x38e/0x859 #1: (&sighand->siglock){....}, at: [<c047a77a>] flush_old_exec+0x39e/0x859 stack backtrace: [<c04051e1>] show_trace_log_lvl+0x54/0xfd [<c040579d>] show_trace+0xd/0x10 [<c04058b6>] dump_stack+0x19/0x1b [<c043b33a>] __lock_acquire+0x773/0x997 [<c043bacf>] lock_acquire+0x4b/0x6c [<c060630b>] _spin_lock+0x19/0x28 [<c047a78a>] flush_old_exec+0x3ae/0x859 [<c0498053>] load_elf_binary+0x4aa/0x1628 [<c0479cab>] search_binary_handler+0xa7/0x24e [<c047b577>] do_execve+0x15b/0x1f9 [<c04022b4>] sys_execve+0x29/0x4d [<c0403faf>] syscall_call+0x7/0xb audit(1153341893.184:2): enforcing=1 old_enforcing=0 auid=4294967295 Note: root fs is mounted via loopback over NFS. :)