Greeting,
FYI, we noticed BUG_RAWv6(Tainted:G_T):Objects_remaining_in_RAWv6_on__kmem_cache_shutdown() due to commit (built with gcc-11):
commit: 6a17b961ec19cd61ca646a6655ab93e8f6fe15c0 ("ipv6: do not use per netns icmp sockets")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linux-next/master 39ab32797f072eaf86b1faa7384ac73450684110]
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
[ 13.193497][ T1] calling inet6_init+0x0/0x95d [ipv6] @ 1
[ 13.194966][ T1] NET: Registered PF_INET6 protocol family
[ 13.211439][ T1] IPv6: Attempt to unregister permanent protocol 6
[ 13.211986][ T1] IPv6: Attempt to unregister permanent protocol 136
[ 13.212495][ T1] IPv6: Attempt to unregister permanent protocol 17
[ 13.234472][ T1] NET: Unregistered PF_INET6 protocol family
[ 13.235185][ T1] =============================================================================
[ 13.235884][ T1] BUG RAWv6 (Tainted: G T): Objects remaining in RAWv6 on __kmem_cache_shutdown()
[ 13.236628][ T1] -----------------------------------------------------------------------------
[ 13.236628][ T1]
[ 13.237448][ T1] Slab 0x(ptrval) objects=13 used=2 fp=0x(ptrval) flags=0x7d010200(slab|head|section=31|zone=1)
[ 13.238219][ T1] CPU: 1 PID: 1 Comm: systemd Tainted: G T 5.16.0-11537-g6a17b961ec19 #1
[ 13.238899][ T1] Call Trace:
[ 13.239151][ T1] ? dump_stack_lvl+0x14a/0x1fa
[ 13.239496][ T1] ? dump_stack+0x1b/0x2c
[ 13.239804][ T1] ? slab_err+0x7a/0xb0
[ 13.240128][ T1] ? lock_acquire+0xcd/0x360
[ 13.240486][ T1] ? free_partial+0x4e/0x210
[ 13.240847][ T1] ? list_slab_objects+0x4a/0x540
[ 13.241327][ T1] ? _raw_spin_lock_irq+0x98/0xf0
[ 13.241718][ T1] ? free_partial+0x134/0x210
[ 13.242081][ T1] ? flush_all_cpus_locked+0x230/0x280
[ 13.242500][ T1] ? __kmem_cache_shutdown+0x40/0xd0
[ 13.242898][ T1] ? shutdown_cache+0x23/0x200
[ 13.243277][ T1] ? kmem_cache_destroy+0x9d/0x130
[ 13.243650][ T1] ? proto_unregister+0x10d/0x180
[ 13.244009][ T1] ? inet6_init+0x900/0x95d [ipv6]
[ 13.244444][ T1] ? inet6_net_init+0x1d5/0x1d5 [ipv6]
[ 13.244887][ T1] ? do_one_initcall+0x60/0x270
[ 13.245208][ T1] ? __mutex_unlock_slowpath+0x33/0x340
[ 13.245552][ T1] ? mutex_unlock+0x2c/0x40
[ 13.245849][ T1] ? __gcov_init+0x64/0xf0
[ 13.246160][ T1] ? do_init_module+0xd3/0x460
[ 13.246487][ T1] ? load_module+0xaee/0xc00
[ 13.246814][ T1] ? __do_sys_finit_module+0xa7/0x150
[ 13.247205][ T1] ? __ia32_sys_finit_module+0x23/0x40
[ 13.247576][ T1] ? __do_fast_syscall_32+0x68/0xf0
[ 13.247957][ T1] ? do_fast_syscall_32+0x29/0x60
[ 13.248349][ T1] ? do_SYSENTER_32+0x15/0x20
[ 13.248683][ T1] ? entry_SYSENTER_32+0xa6/0x112
[ 13.249052][ T1] Disabling lock debugging due to kernel taint
[ 13.249463][ T1] Object 0x(ptrval) @offset=0
[ 13.249784][ T1] Object 0x(ptrval) @offset=1216
[ 13.250186][ T1] ------------[ cut here ]------------
[ 13.250580][ T1] kmem_cache_destroy RAWv6: Slab cache still has objects when called from proto_unregister+0x10d/0x180
[ 13.250611][ T1] WARNING: CPU: 1 PID: 1 at mm/slab_common.c:502 kmem_cache_destroy+0xee/0x130
[ 13.252012][ T1] Modules linked in: ipv6(+)
[ 13.252355][ T1] CPU: 1 PID: 1 Comm: systemd Tainted: G B T 5.16.0-11537-g6a17b961ec19 #1
[ 13.253086][ T1] EIP: kmem_cache_destroy+0xee/0x130
[ 13.253512][ T1] Code: 44 01 83 15 14 06 6d 44 00 83 05 18 06 6d 44 01 83 15 1c 06 6d 44 00 e8 36 f1 2e 01 83 05 20 06 6d 44 01 83 15 24 06 6d 44 00 <0f> 0b 83 05 28 06 6d 44 01 83 15 2c 06 6d 44 00 83 c4 10 e9 4e ff
[ 13.254904][ T1] EAX: 00000064 EBX: 481f80c0 ECX: 00000000 EDX: 00000000
[ 13.255422][ T1] ESI: 00000028 EDI: 00000000 EBP: 4511be44 ESP: 4511be30
[ 13.255925][ T1] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 EFLAGS: 00210246
[ 13.256487][ T1] CR0: 80050033 CR2: 3892c060 CR3: 7eccf000 CR4: 00040690
[ 13.256985][ T1] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 13.257496][ T1] DR6: fffe0ff0 DR7: 00000400
[ 13.257827][ T1] Call Trace:
[ 13.258071][ T1] ? proto_unregister+0x10d/0x180
[ 13.258470][ T1] ? proto_unregister+0x10d/0x180
[ 13.258849][ T1] ? inet6_init+0x900/0x95d [ipv6]
[ 13.259346][ T1] ? inet6_net_init+0x1d5/0x1d5 [ipv6]
[ 13.276018][ T1] ? do_one_initcall+0x60/0x270
[ 13.276406][ T1] ? __mutex_unlock_slowpath+0x33/0x340
[ 13.276835][ T1] ? mutex_unlock+0x2c/0x40
[ 13.277174][ T1] ? __gcov_init+0x64/0xf0
[ 13.277547][ T1] ? do_init_module+0xd3/0x460
[ 13.277892][ T1] ? load_module+0xaee/0xc00
[ 13.278232][ T1] ? __do_sys_finit_module+0xa7/0x150
[ 13.278652][ T1] ? __ia32_sys_finit_module+0x23/0x40
[ 13.279050][ T1] ? __do_fast_syscall_32+0x68/0xf0
[ 13.279489][ T1] ? do_fast_syscall_32+0x29/0x60
[ 13.279884][ T1] ? do_SYSENTER_32+0x15/0x20
[ 13.280206][ T1] ? entry_SYSENTER_32+0xa6/0x112
[ 13.280579][ T1] irq event stamp: 935656
[ 13.280876][ T1] hardirqs last enabled at (935655): [<427ede68>] _raw_spin_unlock_irq+0x68/0xb0
[ 13.281531][ T1] hardirqs last disabled at (935656): [<427ed913>] _raw_spin_lock_irq+0xd3/0xf0
[ 13.282124][ T1] softirqs last enabled at (935632): [<ef5305db>] inet6_unregister_protosw+0x8b/0xd0 [ipv6]
[ 13.282906][ T1] softirqs last disabled at (935630): [<ef53057d>] inet6_unregister_protosw+0x2d/0xd0 [ipv6]
[ 13.283699][ T1] ---[ end trace 0000000000000000 ]---
[ 13.284340][ T1] initcall inet6_init+0x0/0x95d [ipv6] returned -2 after 88118 usecs
If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-lkp/[email protected]
To reproduce:
# build kernel
cd linux
cp config-5.16.0-11537-g6a17b961ec19 .config
make HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-11 CC=gcc-11 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://01.org/lkp