Messages in this thread |  | | Subject | Re: [apparmor_mmap_file] WARNING: bad unlock balance detected! | | From | John Johansen <> | | Date | Wed, 8 Nov 2017 07:54:53 -0800 |
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On 11/06/2017 05:38 PM, Fengguang Wu wrote: > Hi, > > Here is a warning in 4.14-rc8 -- it's not necessarily a new bug. > sigh, yep its older than 4.14 but I have haven't finished bisecting it yet
thanks
> Please press Enter to activate this console. > [ 45.117766] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX > [ 45.122174] 8021q: adding VLAN 0 to HW filter on device eth0 > [ 45.247159] [ 45.247451] ===================================== > [ 45.248021] WARNING: bad unlock balance detected! > [ 45.248608] 4.14.0-rc8 #158 Not tainted > [ 45.249087] ------------------------------------- > [ 45.249672] fw3/1183 is trying to release lock (rcu_preempt_state) at: > [ 45.250443] [<c10e4348>] rcu_read_unlock_special+0x5f8/0x620 > [ 45.251136] but there are no more locks to release! > [ 45.251752] [ 45.251752] other info that might help us debug this: > [ 45.252561] 1 lock held by fw3/1183: > [ 45.253019] #0: (rcu_read_lock){....}, at: [<c16e24c0>] aa_file_perm+0x0/0x460 > [ 45.253925] [ 45.253925] stack backtrace: > [ 45.254526] CPU: 0 PID: 1183 Comm: fw3 Not tainted 4.14.0-rc8 #158 > [ 45.255275] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 > [ 45.256266] Call Trace: > [ 45.256628] dump_stack+0x16/0x1c > [ 45.257082] print_unlock_imbalance_bug+0xb9/0xd0 > [ 45.257676] ? rcu_read_unlock_special+0x5f8/0x620 > [ 45.258259] ? rcu_read_unlock_special+0x5f8/0x620 > [ 45.258871] lock_release+0x1cc/0x490 > [ 45.259347] ? rcu_read_unlock_special+0x5f8/0x620 > [ 45.259969] ? _raw_spin_unlock_irqrestore+0x86/0xd0 > [ 45.260581] rt_mutex_unlock+0x1e/0xb0 > [ 45.261054] rcu_read_unlock_special+0x5f8/0x620 > [ 45.261643] __rcu_read_unlock+0xa7/0xb0 > [ 45.262152] aa_file_perm+0x5a/0x460 > [ 45.262633] ? pvclock_clocksource_read+0xd5/0x230 > [ 45.263203] ? pvclock_clocksource_read+0xd5/0x230 > [ 45.263797] common_file_perm+0x81/0x240 > [ 45.264308] ? kvm_sched_clock_read+0x9/0x20 > [ 45.264843] common_mmap+0x93/0xd0 > [ 45.265283] ? apparmor_file_mprotect+0x30/0x30 > [ 45.265867] apparmor_mmap_file+0x12/0x20 > [ 45.266388] security_mmap_file+0xaf/0x170 > [ 45.266903] vm_mmap_pgoff+0x35/0x100 > [ 45.267381] ? __fget+0x1c3/0x1d0 > [ 45.267831] SyS_mmap_pgoff+0x16d/0x370 > [ 45.268318] do_int80_syscall_32+0x95/0x290 > [ 45.268840] entry_INT80_32+0x2f/0x2f > [ 45.269313] EIP: 0xb7f7c2d4 > [ 45.269713] EFLAGS: 00000202 CPU: 0 > [ 45.270169] EAX: ffffffda EBX: b7f63000 ECX: 000002ad EDX: 00000003 > [ 45.270901] ESI: 00000012 EDI: 00000003 EBP: 00000004 ESP: bff29f24 > [ 45.271637] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 007b > [ 45.351763] 8021q: adding VLAN 0 to HW filter on device eth0 > LKP: HOSTNAME vm-lkp-nhm-dp1-openwrt-ia32-6, MAC , kernel 4.14.0-rc8 158, serial console /dev/ttyS0 > [ 47.390581] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX > > Thanks, > Fengguang
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