Messages in this thread |  | | Date | Wed, 13 Nov 2013 18:12:38 +0000 | From | Al Viro <> | Subject | Re: getcwd() rcu locking bug. |
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On Wed, Nov 13, 2013 at 01:02:38PM -0500, Dave Jones wrote: > On Wed, Nov 13, 2013 at 12:47:06PM -0500, Dave Jones wrote: > > My fuzzer just hit this on v3.12-7033-g42a2d923cc34 > > > > ===================================== > > [ BUG: bad unlock balance detected! ] > > 3.12.0+ #2 Not tainted > > ------------------------------------- > > trinity-child1/11681 is trying to release lock (rcu_read_lock) at: > > [<ffffffff811d287c>] SyS_getcwd+0x11c/0x300 > > but there are no more locks to release! > > > > other info that might help us debug this: > > no locks held by trinity-child1/11681. > > > > stack backtrace: > > CPU: 1 PID: 11681 Comm: trinity-child1 Not tainted 3.12.0+ #2 > > ffffffff81c480a0 ffff88009a40fea0 ffffffff8171b3dc ffff8802399b1560 > > ffff88009a40fec8 ffffffff810d370e ffff8802399b1560 ffffffff81c480a0 > > ffffffff811d287c ffff88009a40ff00 ffffffff810d80fe ffff88023d2d4600 > > Call Trace: > > [<ffffffff8171b3dc>] dump_stack+0x4e/0x7a > > [<ffffffff810d370e>] print_unlock_imbalance_bug+0xee/0x100 > > [<ffffffff811d287c>] ? SyS_getcwd+0x11c/0x300 > > [<ffffffff810d80fe>] lock_release+0x25e/0x310 > > [<ffffffff811d2894>] SyS_getcwd+0x134/0x300 > > [<ffffffff811d2799>] ? SyS_getcwd+0x39/0x300 > > [<ffffffff8172e064>] tracesys+0xdd/0xe2 > > ------------[ cut here ]------------ > > adding Linus, as this might be related to 68f0d9d92e54
Check today's vfs.git#for-linus, should be fixed there.
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