Date:   Fri, 8 Oct 2021 11:19:39 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     linux-ext4@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>
Cc:     Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>
Subject: kernel BUG at fs/ext4/inode.c:1721!

Hi folks,

I noticed the below splat after using my box for a while (i.e., it was
still pretty responsive). Kernel is linus/master from the middle of this
week + tip/master.

Lemme know if you need any other info.

Thx.

[38810.312439] ------------[ cut here ]------------
[38810.317027] kernel BUG at fs/ext4/inode.c:1721!
[38810.321532] invalid opcode: 0000 [#1] PREEMPT SMP
[38810.326207] CPU: 10 PID: 24284 Comm: ThreadPoolForeg Not tainted 5.15.0-rc4+ #1
[38810.326210] Hardware name: Micro-Star International Co., Ltd. MS-7B79/X470 GAMING PRO (MS-7B79), BIOS 1.70 01/23/2019
[38810.326211] RIP: 0010:ext4_da_get_block_prep+0x3fd/0x440
[38810.326218] Code: ff ff f0 80 0b 20 0f 1f 80 00 00 00 00 e9 ed fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 e8 5b 95 fe ff 41 89 c4 e9 04 fe ff ff <0f> 0b 0f 0b 48 8b 7d 28 89 04 24 45 89 e1 4c 8b 45 38 48 c7 c1 10
[38810.367814] RSP: 0018:ffffc90002fdfc18 EFLAGS: 00010206
[38810.367818] RAX: 0000000000000001 RBX: ffff8881773226e8 RCX: 0000000000000004
[38810.367820] RDX: 27ffffffffffffff RSI: 0000000000000001 RDI: ffff8881dced03b8
[38810.367821] RBP: ffff8881dced0118 R08: 0000000000000001 R09: ffff8881773226e8
[38810.367823] R10: 0000000000001000 R11: ffff8887feeae3e0 R12: 0000000000000003
[38810.367824] R13: ffffffffffff0000 R14: 0000000000000000 R15: 0000000000000003
[38810.367825] FS:  00007f135f7fe700(0000) GS:ffff8887fee80000(0000) knlGS:0000000000000000
[38810.416367] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[38810.416370] CR2: 00007f9450fd8658 CR3: 0000000103ec5000 CR4: 00000000003506e0
[38810.416371] Call Trace:
[38810.416373]  <TASK>
[38810.416374]  ? alloc_buffer_head+0x1b/0x80
[38810.416380]  __block_write_begin_int+0x171/0x650
[38810.416384]  ? ext4_da_release_space+0x120/0x120
[38810.446889]  ext4_da_write_begin+0x107/0x280
[38810.446893]  ? generic_write_end+0xf6/0x150
[38810.446896]  generic_perform_write+0xaf/0x1c0
[38810.446899]  ext4_buffered_write_iter+0xbb/0x180
[38810.464182]  new_sync_write+0x10b/0x190
[38810.464187]  vfs_write+0x216/0x2d0
[38810.464190]  ? __fget_files+0x6b/0xa0
[38810.464193]  __x64_sys_pwrite64+0x87/0xb0
[38810.478984]  do_syscall_64+0x3b/0x80
[38810.478987]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[38810.478991] RIP: 0033:0x7f13a836c9c7
[38810.478994] Code: 08 89 3c 24 48 89 4c 24 18 e8 55 f3 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 85 f3 ff ff 48 8b
[38810.478997] RSP: 002b:00007f135f7fc840 EFLAGS: 00000293 ORIG_RAX: 0000000000000012
[38810.509680] RAX: ffffffffffffffda RBX: 00007f135f7fc890 RCX: 00007f13a836c9c7
[38810.509681] RDX: 000000000000051a RSI: 00007f13908549d0 RDI: 00000000000000eb
[38810.509683] RBP: 00007f135f7fc930 R08: 0000000000000000 R09: 00007ffc27dbc090
[38810.509684] R10: 0000000000002bff R11: 0000000000000293 R12: 0000000000002bff
[38810.509685] R13: 00007f1344003a60 R14: 00007f13908549d0 R15: 000000000000051a
[38810.509688]  </TASK>
[38810.509688] Modules linked in: fuse essiv authenc nft_counter nf_tables libcrc32c nfnetlink vfat fat loop dm_crypt dm_mod amd64_edac edac_mce_amd kvm_amd snd_hda_codec_realtek snd_hda_codec_generic kvm led_class ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_pcm irqbypass crct10dif_pclmul snd_timer crc32_pclmul crc32c_intel snd ghash_clmulni_intel pcspkr k10temp soundcore gpio_amdpt gpio_generic acpi_cpufreq radeon aesni_intel crypto_simd cryptd pinctrl_amd
[38810.598925] ---[ end trace c014409ea194e650 ]---


-- 
Regards/Gruss,
    Boris.

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