Hi folks, I caused a kernel panic by just starting downloading simultaneously several big files by Google Chrome browser and removing games in parallel in the Steam client (because the disk was almost full) general protection fault: 0000 [#1] SMP NOPTI CPU: 15 PID: 104506 Comm: Chrome_IOThread Not tainted 5.5.0-0.rc5.git3.2.fc32.x86_64 #1 Hardware name: System manufacturer System Product Name/ROG STRIX X570-I GAMING, BIOS 1405 11/19/2019 RIP: 0010:__kmalloc+0xa8/0x330 Code: e3 01 00 00 4d 8b 06 65 49 8b 50 08 65 4c 03 05 be 91 cc 5e 4d 8b 38 4d 85 ff 0f 84 22 02 00 00 41 8b 5e 20 49 8b 3e 4c 01 fb <48> 33 1b 49 33 9e d0 01 00 00 40 f6 c7 0f 0f 85 1f 02 00 00 48 8d RSP: 0018:ffffa4428b6bfb00 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 669e19e5410de38b RCX: 0000000000000000 RDX: 000000000016fcfc RSI: 0000000000000400 RDI: 00000000001f4080 RBP: 0000000000000cc0 R08: ffff889a7c1f4080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000011 R13: ffff889a76c07800 R14: ffff889a76c07800 R15: 669e19e5410de38b FS: 00007fd5dc49d700(0000) GS:ffff889a7c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00001a0409c04000 CR3: 000000078042e000 CR4: 0000000000340ee0 Call Trace: ? shmem_initxattrs+0x89/0xd0 shmem_initxattrs+0x89/0xd0 security_inode_init_security+0xf8/0x140 ? shmem_enabled_store+0x1f0/0x1f0 shmem_mknod+0x76/0xe0 lookup_open+0x5bd/0x820 path_openat+0x33d/0xc90 ? touch_atime+0x33/0xe0 do_filp_open+0x91/0x100 ? _raw_spin_unlock+0x1f/0x30 ? __alloc_fd+0xe9/0x1d0 do_sys_open+0x184/0x220 do_syscall_64+0x5c/0xa0 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd5ee1d3134 Code: 24 20 eb 8f 66 90 44 89 54 24 0c e8 26 4c f9 ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 32 44 89 c7 89 44 24 0c e8 58 4c f9 ff 8b 44 RSP: 002b:00007fd5dc49bc30 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd5ee1d3134 RDX: 00000000000000c2 RSI: 00001baff2871330 RDI: 00000000ffffff9c RBP: 00001baff2871330 R08: 0000000000000000 R09: 00007fd5dc49bcd8 R10: 0000000000000180 R11: 0000000000000293 R12: 00000000000000c2 R13: 00007fd5ee272c60 R14: 00007fd5dc49bcd0 R15: 8421084210842109 Modules linked in: uinput rfcomm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun bridge stp llc nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nf_tables_set nft_chain_nat nf_tables ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c iptable_mangle iptable_raw iptable_security ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat snd_hda_codec_realtek snd_hda_codec_generic edac_mce_amd ledtrig_audio snd_hda_codec_hdmi iwlmvm snd_hda_intel kvm_amd snd_intel_dspcfg snd_usb_audio kvm snd_hda_codec snd_hda_core snd_usbmidi_lib btusb irqbypass snd_rawmidi mac80211 snd_hwdep uvcvideo btrtl snd_seq btbcm videobuf2_vmalloc btintel videobuf2_memops snd_seq_device videobuf2_v4l2 crct10dif_pclmul videobuf2_common bluetooth crc32_pclmul libarc4 snd_pcm videodev joydev iwlwifi eeepc_wmi xpad mc snd_timer ff_memless ghash_clmulni_intel asus_wmi ecdh_generic sparse_keymap ecc video sp5100_tco wmi_bmof pcspkr snd cfg80211 k10temp ccp i2c_piix4 soundcore rfkill acpi_cpufreq binfmt_misc ip_tables hid_logitech_hidpp hid_logitech_dj amdgpu amd_iommu_v2 gpu_sched ttm drm_kms_helper drm igb nvme crc32c_intel dca nvme_core i2c_algo_bit wmi pinctrl_amd fuse ---[ end trace 8503eed9a4b0cd11 ]--- RIP: 0010:__kmalloc+0xa8/0x330 Code: e3 01 00 00 4d 8b 06 65 49 8b 50 08 65 4c 03 05 be 91 cc 5e 4d 8b 38 4d 85 ff 0f 84 22 02 00 00 41 8b 5e 20 49 8b 3e 4c 01 fb <48> 33 1b 49 33 9e d0 01 00 00 40 f6 c7 0f 0f 85 1f 02 00 00 48 8d RSP: 0018:ffffa4428b6bfb00 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 669e19e5410de38b RCX: 0000000000000000 RDX: 000000000016fcfc RSI: 0000000000000400 RDI: 00000000001f4080 RBP: 0000000000000cc0 R08: ffff889a7c1f4080 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000011 R13: ffff889a76c07800 R14: ffff889a76c07800 R15: 669e19e5410de38b FS: 00007fd5dc49d700(0000) GS:ffff889a7c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00001a0409c04000 CR3: 000000078042e000 CR4: 0000000000340ee0 I don’t think that git bisect is really possible here because the state on the disk will be different each time (there are no more deleted files) and there is no exact case that would reproduce the error. $ /usr/src/kernels/`uname -r`/scripts/faddr2line /lib/debug/lib/modules/`uname -r`/vmlinux __kmalloc+0xa8/0x330 __kmalloc+0xa8/0x330: freelist_ptr at mm/slub.c:261 (inlined by) freelist_dereference at mm/slub.c:272 (inlined by) get_freepointer at mm/slub.c:278 (inlined by) get_freepointer_safe at mm/slub.c:292 (inlined by) slab_alloc_node at mm/slub.c:2726 (inlined by) slab_alloc at mm/slub.c:2767 (inlined by) __kmalloc at mm/slub.c:3799 >From the trace, I see that the problem comes from mm/slub.c so I added this report in the linux-mm mailing list please correct me if I'm wrong. -- Best Regards, Mike Gavrilov.
