Message-ID: <CA+QYu4q7K-pkAbMt3br_7O-Lu2OWyieLfyiju0PNEiy5YdKYzg@mail.gmail.com>
Date:   Mon, 28 Mar 2022 16:09:52 +0200
From:   Bruno Goncalves <bgoncalv@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     CKI Project <cki-project@...hat.com>, Li Wang <liwang@...hat.com>,
        Jan Stancek <jstancek@...hat.com>
Subject: RIP: 0010:param_get_bool.cold+0x0/0x2 - LTP read_all_sys - 5.17.0

Hello,

We've observed the panic below when testing mainline kernel. More logs
can be found on [1] and CKI tracker [2].

[12057.972471] LTP: starting read_all_sys (read_all -d /sys -q -r 3)
[12062.975732] zram: Added device: zram1
[12062.980426] zram: Added device: zram2
[12062.983235] zram: Added device: zram3
[12063.510331] WARNING! power/level is deprecated; use power/control instead
[12064.466740] bdi 1:2: the stable_pages_required attribute has been
removed. Use the stable_writes queue attribute instead.
[12066.625736] invalid opcode: 0000 [#1] PREEMPT SMP PTI
[12066.626556] CPU: 0 PID: 128980 Comm: read_all Tainted: G
OE     5.17.0 #1
[12066.627745] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
[12066.628608] RIP: 0010:param_get_bool.cold+0x0/0x2
[12066.629356] Code: 3b ff e9 55 f8 3d ff 48 8b 75 00 8d 51 ff 48 c7
c7 60 47 84 af e8 2a 69 00 00 b8 e4 ff ff ff e9 89 fb 3d ff 0f 0b 0f
0b 0f 0b <0f> 0b 0f 0b 48 8b 33 48 c7 c7 88 47 84 af e8 07 69 00 00 b8
e4 ff
[12066.632133] RSP: 0018:ffffa97d4114fd18 EFLAGS: 00010282
[12066.632929] RAX: ffffffffb04806ec RBX: ffff98d640277eb8 RCX: 0000000000000000
[12066.634051] RDX: 0000000000000000 RSI: ffffffffafa11810 RDI: ffff98d67b1df000
[12066.635108] RBP: ffff98d6403e6d80 R08: ffff98d668d48e50 R09: 00000000473bf681
[12066.636188] R10: ffffa97d4114fd20 R11: 000000001473bf68 R12: ffff98d67b1df000
[12066.637229] R13: ffffffffb008b5e0 R14: 0000000000000001 R15: 0000000000000001
[12066.638296] FS:  00007f26a5fcb740(0000) GS:ffff98d67bc00000(0000)
knlGS:0000000000000000
[12066.639533] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[12066.640371] CR2: 0000000002290008 CR3: 0000000103a46005 CR4: 00000000003706f0
[12066.641403] DR0: 000000000042c9f0 DR1: 0000000000000000 DR2: 0000000000000000
[12066.642467] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[12066.643712] Call Trace:
[12066.644114]  <TASK>
[12066.644433]  param_attr_show+0x57/0x90
[12066.645036]  module_attr_show+0x1c/0x30
[12066.645599]  sysfs_kf_seq_show+0xac/0xf0
[12066.646221]  seq_read_iter+0x126/0x460
[12066.646819]  new_sync_read+0x112/0x1a0
[12066.647418]  vfs_read+0x169/0x1c0
[12066.647951]  ksys_read+0x6c/0xf0
[12066.648460]  do_syscall_64+0x5b/0x80
[12066.649055]  ? do_syscall_64+0x67/0x80
[12066.649605]  ? do_syscall_64+0x67/0x80
[12066.650190]  ? do_syscall_64+0x67/0x80
[12066.650777]  ? lockdep_hardirqs_on+0x7d/0x100
[12066.651453]  ? do_syscall_64+0x67/0x80
[12066.652041]  ? asm_sysvec_apic_timer_interrupt+0x12/0x20
[12066.652852]  ? asm_sysvec_apic_timer_interrupt+0xa/0x20
[12066.653640]  ? lockdep_hardirqs_on+0x7d/0x100
[12066.654315]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[12066.655088] RIP: 0033:0x7f26a5d05742
[12066.655828] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 1a cf 0b 00 e8 f5
f5 01 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75
10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89
54 24
[12066.658663] RSP: 002b:00007ffc0c869f08 EFLAGS: 00000246 ORIG_RAX:
0000000000000000
[12066.662974] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f26a5d05742
[12066.664041] RDX: 00000000000003ff RSI: 00007ffc0c86a3b0 RDI: 0000000000000003
[12066.665101] RBP: 00007f26a5fd3000 R08: 0000000000000000 R09: 00007ffc0c8696a0
[12066.666167] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000042d790
[12066.667208] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[12066.668278]  </TASK>
[12066.668611] Modules linked in: vfio_iommu_type1 vfio vhost_net tap
vhost_vsock vhost vhost_iotlb snd_seq_dummy minix binfmt_misc vcan
can_raw nfsv3 nfs_acl nfs lockd grace fscache netfs rds btrfs raid6_pq
zstd_compress tun brd exfat vfat fat vsock_loopback
vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock
vmw_vmci can_bcm can n_gsm pps_ldisc ppp_synctty mkiss ax25 ppp_async
ppp_generic serport slcan slip slhc snd_hrtimer snd_seq snd_seq_device
sctp pcrypt crypto_user algif_hash n_hdlc tls rfkill intel_rapl_msr
sunrpc snd_hda_codec_generic ledtrig_audio intel_rapl_common
snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec
snd_hda_core 8139too snd_hwdep snd_pcm joydev virtio_balloon pcspkr
snd_timer snd 8139cp soundcore mii i2c_piix4 fuse zram xfs
crct10dif_pclmul crc32_pclmul crc32c_intel qxl drm_ttm_helper
ghash_clmulni_intel ttm drm_kms_helper drm virtio_console virtio_blk
serio_raw ata_generic pata_acpi floppy qemu_fw_cfg [last unloaded:
ltp_insmod01]
[12066.681725] ---[ end trace 0000000000000000 ]---
[12066.682447] RIP: 0010:param_get_bool.cold+0x0/0x2
[12066.683197] Code: 3b ff e9 55 f8 3d ff 48 8b 75 00 8d 51 ff 48 c7
c7 60 47 84 af e8 2a 69 00 00 b8 e4 ff ff ff e9 89 fb 3d ff 0f 0b 0f
0b 0f 0b <0f> 0b 0f 0b 48 8b 33 48 c7 c7 88 47 84 af e8 07 69 00 00 b8
e4 ff
[12066.685965] RSP: 0018:ffffa97d4114fd18 EFLAGS: 00010282
[12066.686804] RAX: ffffffffb04806ec RBX: ffff98d640277eb8 RCX: 0000000000000000
[12066.687885] RDX: 0000000000000000 RSI: ffffffffafa11810 RDI: ffff98d67b1df000
[12066.688958] RBP: ffff98d6403e6d80 R08: ffff98d668d48e50 R09: 00000000473bf681
[12066.690037] R10: ffffa97d4114fd20 R11: 000000001473bf68 R12: ffff98d67b1df000
[12066.691165] R13: ffffffffb008b5e0 R14: 0000000000000001 R15: 0000000000000001
[12066.692288] FS:  00007f26a5fcb740(0000) GS:ffff98d67bc00000(0000)
knlGS:0000000000000000
[12066.693506] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[12066.694349] CR2: 0000000002290008 CR3: 0000000103a46005 CR4: 00000000003706f0
[12066.695417] DR0: 000000000042c9f0 DR1: 0000000000000000 DR2: 0000000000000000
[12066.696486] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[12066.697557] Kernel panic - not syncing: Fatal exception
[12066.699020] Kernel Offset: 0x2d000000 from 0xffffffff81000000
(relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[12066.700938] ---[ end Kernel panic - not syncing: Fatal exception ]---

[1] https://datawarehouse.cki-project.org/kcidb/tests/2924662
[2] https://datawarehouse.cki-project.org/issue/1078

Thanks,
Bruno Goncalves

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