Bug#861808: linux-image-4.9.0-3-rt-amd64: BUG: scheduling while atomic and val > preempt_count()
Package: linux-image-4.9.0-3-rt-amd64
Version: 4.9.25-1
Dear maintainer,
here is a kernel bug that occurred after a few hours of uptime:
[24763.292878] BUG: scheduling while atomic: cron/25592/0x00000002
[24763.292906] Modules linked in: cpufreq_conservative cpufreq_powersave cpufreq_userspace cfg80211 rfkill iTCO_wdt iTCO_vendor_support ppdev dell_wmi sparse_keymap dell_smbios dcdbas coretemp kvm_intel kvm irqbypass snd_hda_codec_analog snd_hda_codec_generic pcspkr serio_raw sg snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm_oss snd_mixer_oss lpc_ich snd_pcm mfd_core shpchp snd_timer snd soundcore mei_me mei acpi_cpufreq parport_pc parport evdev ip6table_filter ip6_tables xt_multiport iptable_filter binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi drbd lru_cache loop dm_crypt ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache btrfs ses enclosure scsi_transport_sas
[24763.292923] raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod dm_mirror dm_region_hash dm_log dm_mod uas usb_storage hid_generic usbhid hid sd_mod psmouse i2c_i801 i2c_smbus ahci libahci i915 video wmi i2c_algo_bit drm_kms_helper ehci_pci uhci_hcd ehci_hcd e1000e ptp button drm ata_generic usbcore pps_core usb_common libata scsi_mod
[24763.292927] Preemption disabled at:
[24763.292927] [<ffffffff9e05845f>] get_random_int+0x2f/0xc0
[24763.292930] CPU: 0 PID: 25592 Comm: cron Not tainted 4.9.0-3-rt-amd64 #1 Debian 4.9.25-1
[24763.292930] Hardware name: Dell Inc. OptiPlex 780 /0C27VV, BIOS A15 08/06/2013
[24763.292933] 0000000000000000 ffffffff9df3d8ab ffffffff9e05845f ffffa59ac8d2fae8
[24763.292934] ffffffff9dca4113 0000000000000000 ffffffff9e22153b 00ff8fb8130f51e8
[24763.292935] ffff8fb853469240 ffff8fb8130f1d80 ffff8fb8130f1d80 ffffa59ac8d2fb28
[24763.292936] Call Trace:
[24763.292940] [<ffffffff9df3d8ab>] ? dump_stack+0x5c/0x81
[24763.292941] [<ffffffff9e05845f>] ? get_random_int+0x2f/0xc0
[24763.292943] [<ffffffff9dca4113>] ? __schedule_bug+0x73/0xc0
[24763.292945] [<ffffffff9e22153b>] ? __schedule+0x4fb/0x5b0
[24763.292946] [<ffffffff9e221633>] ? schedule+0x43/0xc0
[24763.292947] [<ffffffff9e2232bf>] ? rt_spin_lock_slowlock+0x1ef/0x340
[24763.292948] [<ffffffff9e0579b9>] ? _extract_crng+0x39/0xa0
[24763.292949] [<ffffffff9e0584c9>] ? get_random_int+0x99/0xc0
[24763.292952] [<ffffffff9ddf52ae>] ? new_slab+0x1ae/0x6b0
[24763.292953] [<ffffffff9ddf7d7e>] ? ___slab_alloc+0x30e/0x570
[24763.292955] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.292956] [<ffffffff9dca4651>] ? migrate_enable+0x81/0x150
[24763.292958] [<ffffffff9de2a353>] ? dput+0x123/0x2a0
[24763.292960] [<ffffffff9de33e21>] ? mntput_no_expire+0x11/0x180
[24763.292961] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.292962] [<ffffffff9ddf8052>] ? __slab_alloc.isra.69+0x72/0xb0
[24763.292963] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.292964] [<ffffffff9ddf9a48>] ? kmem_cache_alloc+0x158/0x1d0
[24763.292965] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.292967] [<ffffffff9ddd2bd8>] ? do_mmap+0x438/0x510
[24763.292969] [<ffffffff9ddb4b21>] ? vm_mmap_pgoff+0xc1/0x100
[24763.292970] [<ffffffff9ddd0871>] ? SyS_mmap_pgoff+0x1b1/0x270
[24763.292972] [<ffffffff9e2259bb>] ? system_call_fast_compare_end+0xc/0x9b
[24763.294242] ------------[ cut here ]------------
[24763.294270] WARNING: CPU: 0 PID: 25592 at /build/linux-JYG8Jz/linux-4.9.25/debian/build/source_rt/kernel/sched/core.c:3301 get_random_int+0x63/0xc0
[24763.294272] DEBUG_LOCKS_WARN_ON(val > preempt_count())
[24763.294273] Modules linked in:
[24763.294293] cpufreq_conservative cpufreq_powersave cpufreq_userspace cfg80211 rfkill iTCO_wdt iTCO_vendor_support ppdev dell_wmi sparse_keymap dell_smbios dcdbas coretemp kvm_intel kvm irqbypass snd_hda_codec_analog snd_hda_codec_generic pcspkr serio_raw sg snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm_oss snd_mixer_oss lpc_ich snd_pcm mfd_core shpchp snd_timer snd soundcore mei_me mei acpi_cpufreq parport_pc parport evdev ip6table_filter ip6_tables xt_multiport iptable_filter binfmt_misc ib_iser rdma_cm iw_cm ib_cm ib_core configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi drbd lru_cache loop dm_crypt ip_tables x_tables autofs4 ext4 crc16 jbd2 fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache btrfs ses enclosure scsi_transport_sas raid10 raid456
[24763.294305] async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod dm_mirror dm_region_hash dm_log dm_mod uas usb_storage hid_generic usbhid hid sd_mod psmouse i2c_i801 i2c_smbus ahci libahci i915 video wmi i2c_algo_bit drm_kms_helper ehci_pci uhci_hcd ehci_hcd e1000e ptp button drm ata_generic usbcore pps_core usb_common libata scsi_mod
[24763.294309] CPU: 0 PID: 25592 Comm: cron Tainted: G W 4.9.0-3-rt-amd64 #1 Debian 4.9.25-1
[24763.294309] Hardware name: Dell Inc. OptiPlex 780 /0C27VV, BIOS A15 08/06/2013
[24763.294312] 0000000000000000 ffffffff9df3d8ab ffffa59ac8d2fb68 0000000000000000
[24763.294313] ffffffff9dc7b787 ffff8fb853465a80 ffffa59ac8d2fbc0 00000000024000c0
[24763.294314] 00000000ffffffff ffff8fb773d65a40 ffffe87f44346f00 ffffffff9dc7b7ff
[24763.294315] Call Trace:
[24763.294317] [<ffffffff9df3d8ab>] ? dump_stack+0x5c/0x81
[24763.294319] [<ffffffff9dc7b787>] ? __warn+0xd7/0xf0
[24763.294321] [<ffffffff9dc7b7ff>] ? warn_slowpath_fmt+0x5f/0x80
[24763.294322] [<ffffffff9e058493>] ? get_random_int+0x63/0xc0
[24763.294324] [<ffffffff9ddf52ae>] ? new_slab+0x1ae/0x6b0
[24763.294325] [<ffffffff9ddf7d7e>] ? ___slab_alloc+0x30e/0x570
[24763.294327] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.294329] [<ffffffff9dca4651>] ? migrate_enable+0x81/0x150
[24763.294330] [<ffffffff9de2a353>] ? dput+0x123/0x2a0
[24763.294331] [<ffffffff9de33e21>] ? mntput_no_expire+0x11/0x180
[24763.294332] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.294334] [<ffffffff9ddf8052>] ? __slab_alloc.isra.69+0x72/0xb0
[24763.294335] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.294336] [<ffffffff9ddf9a48>] ? kmem_cache_alloc+0x158/0x1d0
[24763.294337] [<ffffffff9ddd2476>] ? mmap_region+0x2f6/0x620
[24763.294339] [<ffffffff9ddd2bd8>] ? do_mmap+0x438/0x510
[24763.294341] [<ffffffff9ddb4b21>] ? vm_mmap_pgoff+0xc1/0x100
[24763.294342] [<ffffffff9ddd0871>] ? SyS_mmap_pgoff+0x1b1/0x270
[24763.294344] [<ffffffff9e2259bb>] ? system_call_fast_compare_end+0xc/0x9b
[24763.294346] ---[ end trace 0000000000000002 ]---
--
Laurent.
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