Bug#920177: linux-image-4.19.0-2-rt-amd64-unsigned: BUG while removing the sunrpc module
Subject: linux-image-4.19.0-2-rt-amd64-unsigned: BUG
Package: src:linux
Version: 4.19.16-1
Severity: normal
Dear Maintainer,
I was trying to remove the sunrpc module from the kernel and got the following BUG and backtrace.
Note that the kernel is tainted because of this previous error that is unrelated:
[ 1.514708] button: module verification failed: signature and/or required key missing - tainting kernel
[ 204.858131] RPC: Unregistered named UNIX socket transport module.
[ 204.858134] RPC: Unregistered udp transport module.
[ 204.858136] RPC: Unregistered tcp transport module.
[ 204.858137] RPC: Unregistered tcp NFSv4.1 backchannel transport module.
[ 204.859248] =============================================================================
[ 204.859251] BUG rpc_inode_cache (Tainted: G E ): Objects remaining in rpc_inode_cache on __kmem_cache_shutdown()
[ 204.859251] -----------------------------------------------------------------------------
[ 204.859252] Disabling lock debugging due to kernel taint
[ 204.859255] INFO: Slab 0x00000000006c197c objects=18 used=13 fp=0x00000000a584567e flags=0x17fffc000008100
[ 204.859259] CPU: 0 PID: 3633 Comm: rmmod Tainted: G B E 4.19.0-2-rt-amd64 #1 Debian 4.19.16-1
[ 204.859260] Hardware name: Dell Inc. OptiPlex 7010/0KRC95, BIOS A29 06/28/2018
[ 204.859261] Call Trace:
[ 204.859269] dump_stack+0x5c/0x80
[ 204.859273] slab_err+0xb0/0xd4
[ 204.859277] ? cpumask_next+0x16/0x20
[ 204.859279] ? flush_all+0x66/0x100
[ 204.859282] __kmem_cache_shutdown.cold.103+0x1c/0x26
[ 204.859287] shutdown_cache+0x15/0x1c0
[ 204.859290] kmem_cache_destroy+0x216/0x240
[ 204.859316] unregister_rpc_pipefs+0x16/0x30 [sunrpc]
[ 204.859334] cleanup_sunrpc+0x1e/0x39 [sunrpc]
[ 204.859337] __x64_sys_delete_module+0x190/0x2c0
[ 204.859341] do_syscall_64+0x53/0x100
[ 204.859346] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 204.859349] RIP: 0033:0x7f43fb8a00f7
[ 204.859351] Code: 73 01 c3 48 8b 0d 99 0d 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 69 0d 0c 00 f7 d8 64 89 01 48
[ 204.859354] RSP: 002b:00007ffc4236d208 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[ 204.859356] RAX: ffffffffffffffda RBX: 000055a14f7eb220 RCX: 00007f43fb8a00f7
[ 204.859357] RDX: 000000000000000a RSI: 0000000000000800 RDI: 000055a14f7eb288
[ 204.859358] RBP: 0000000000000000 R08: 00007ffc4236c181 R09: 0000000000000000
[ 204.859359] R10: 00007f43fb911ae0 R11: 0000000000000206 R12: 00007ffc4236d430
[ 204.859360] R13: 00007ffc4236ec4b R14: 000055a14f7ea010 R15: 000055a14f7eb220
[ 204.859363] kmem_cache_destroy rpc_inode_cache: Slab cache still has objects
[ 204.859621] CPU: 0 PID: 3633 Comm: rmmod Tainted: G B E 4.19.0-2-rt-amd64 #1 Debian 4.19.16-1
[ 204.859622] Hardware name: Dell Inc. OptiPlex 7010/0KRC95, BIOS A29 06/28/2018
[ 204.859623] Call Trace:
[ 204.859626] dump_stack+0x5c/0x80
[ 204.859629] kmem_cache_destroy+0x233/0x240
[ 204.859647] unregister_rpc_pipefs+0x16/0x30 [sunrpc]
[ 204.859664] cleanup_sunrpc+0x1e/0x39 [sunrpc]
[ 204.859666] __x64_sys_delete_module+0x190/0x2c0
[ 204.859670] do_syscall_64+0x53/0x100
[ 204.859673] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 204.859675] RIP: 0033:0x7f43fb8a00f7
[ 204.859677] Code: 73 01 c3 48 8b 0d 99 0d 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 69 0d 0c 00 f7 d8 64 89 01 48
[ 204.859678] RSP: 002b:00007ffc4236d208 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[ 204.859679] RAX: ffffffffffffffda RBX: 000055a14f7eb220 RCX: 00007f43fb8a00f7
[ 204.859680] RDX: 000000000000000a RSI: 0000000000000800 RDI: 000055a14f7eb288
[ 204.859681] RBP: 0000000000000000 R08: 00007ffc4236c181 R09: 0000000000000000
[ 204.859682] R10: 00007f43fb911ae0 R11: 0000000000000206 R12: 00007ffc4236d430
[ 204.859683] R13: 00007ffc4236ec4b R14: 000055a14f7ea010 R15: 000055a14f7eb220
-- Package-specific info:
** Version:
Linux version 4.19.0-2-rt-amd64 (debian-kernel@lists.debian.org) (gcc version 8.2.0 (Debian 8.2.0-14)) #1 SMP PREEMPT RT Debian 4.19.16-1 (2019-01-17)
** Command line:
BOOT_IMAGE=/boot/vmlinuz-4.19.0-2-rt-amd64 root=UUID=c27a1c2e-4689-49ec-ab55-bba0dae046dc ro vsyscall=none security=apparmor intel_iommu=on quiet
** Tainted: BE (8224)
* System has hit bad_page.
* Unsigned module has been loaded.
** Model information
sys_vendor: Dell Inc.
product_name: OptiPlex 7010
product_version: 01
chassis_vendor: Dell Inc.
chassis_version:
bios_vendor: Dell Inc.
bios_version: A29
board_vendor: Dell Inc.
board_name: 0KRC95
board_version: A02
** Loaded modules:
cpufreq_conservative(E)
cpufreq_userspace(E)
cpufreq_powersave(E)
intel_rapl(E)
intel_powerclamp(E)
coretemp(E)
kvm_intel(E)
kvm(E)
irqbypass(E)
crct10dif_pclmul(E)
crc32_pclmul(E)
dell_wmi(E)
snd_hda_codec_hdmi(E)
ghash_clmulni_intel(E)
intel_cstate(E)
snd_hda_codec_realtek(E)
snd_hda_codec_generic(E)
intel_uncore(E)
intel_rapl_perf(E)
dell_smbios(E)
dcdbas(E)
sparse_keymap(E)
dell_wmi_descriptor(E)
wmi_bmof(E)
serio_raw(E)
pcspkr(E)
sg(E)
snd_hda_intel(E)
snd_hda_codec(E)
snd_hda_core(E)
snd_hwdep(E)
snd_pcm_oss(E)
snd_mixer_oss(E)
snd_pcm(E)
iTCO_wdt(E)
iTCO_vendor_support(E)
snd_timer(E)
snd(E)
soundcore(E)
binfmt_misc(E)
evdev(E)
ie31200_edac(E)
pcc_cpufreq(E)
configfs(E)
lru_cache(E)
i2c_dev(E)
loop(E)
ip_tables(E)
x_tables(E)
autofs4(E)
ext4(E)
crc16(E)
mbcache(E)
jbd2(E)
fscrypto(E)
ecb(E)
crypto_simd(E)
cryptd(E)
glue_helper(E)
aes_x86_64(E)
hid_generic(E)
usbhid(E)
hid(E)
zstd_decompress(E)
zstd_compress(E)
xxhash(E)
uas(E)
usb_storage(E)
async_memcpy(E)
async_xor(E)
async_tx(E)
xor(E)
libcrc32c(E)
crc32c_generic(E)
sd_mod(E)
ahci(E)
xhci_pci(E)
ehci_pci(E)
libahci(E)
i915(E)
xhci_hcd(E)
ehci_hcd(E)
i2c_algo_bit(E)
libata(E)
drm_kms_helper(E)
usbcore(E)
crc32c_intel(E)
i2c_i801(E)
scsi_mod(E)
lpc_ich(E)
usb_common(E)
e1000e(E)
drm(E)
thermal(E)
wmi(E)
video(E)
button(E)
--
Laurent.
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