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[2403:580d:fda1::299]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-343ea713fdfsm1990223a91.2.2025.11.13.12.14.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 13 Nov 2025 12:14:54 -0800 (PST) Message-ID: Date: Fri, 14 Nov 2025 06:44:48 +1030 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linux-next20251112]Kernel OOPs while running btrfs/023 test case To: dsterba@suse.cz, Venkat Rao Bagalkote Cc: riteshh@linux.ibm.com, linux-btrfs@vger.kernel.org, Qu Wenruo , David Sterba , LKML , Madhavan Srinivasan , Linux Next Mailing List , Stephen Rothwell References: <83749167-c479-46df-a749-e3f65ffc3964@linux.ibm.com> <65b02403-25e5-4ec3-8577-de1409b0a765@linux.ibm.com> <20251113155107.GQ13846@twin.jikos.cz> Content-Language: en-US From: Qu Wenruo Autocrypt: addr=wqu@suse.com; keydata= xsBNBFnVga8BCACyhFP3ExcTIuB73jDIBA/vSoYcTyysFQzPvez64TUSCv1SgXEByR7fju3o 8RfaWuHCnkkea5luuTZMqfgTXrun2dqNVYDNOV6RIVrc4YuG20yhC1epnV55fJCThqij0MRL 1NxPKXIlEdHvN0Kov3CtWA+R1iNN0RCeVun7rmOrrjBK573aWC5sgP7YsBOLK79H3tmUtz6b 9Imuj0ZyEsa76Xg9PX9Hn2myKj1hfWGS+5og9Va4hrwQC8ipjXik6NKR5GDV+hOZkktU81G5 gkQtGB9jOAYRs86QG/b7PtIlbd3+pppT0gaS+wvwMs8cuNG+Pu6KO1oC4jgdseFLu7NpABEB AAHNGFF1IFdlbnJ1byA8d3F1QHN1c2UuY29tPsLAlAQTAQgAPgIbAwULCQgHAgYVCAkKCwIE FgIDAQIeAQIXgBYhBC3fcuWlpVuonapC4cI9kfOhJf6oBQJnEXVgBQkQ/lqxAAoJEMI9kfOh Jf6o+jIH/2KhFmyOw4XWAYbnnijuYqb/obGae8HhcJO2KIGcxbsinK+KQFTSZnkFxnbsQ+VY fvtWBHGt8WfHcNmfjdejmy9si2jyy8smQV2jiB60a8iqQXGmsrkuR+AM2V360oEbMF3gVvim 2VSX2IiW9KERuhifjseNV1HLk0SHw5NnXiWh1THTqtvFFY+CwnLN2GqiMaSLF6gATW05/sEd V17MdI1z4+WSk7D57FlLjp50F3ow2WJtXwG8yG8d6S40dytZpH9iFuk12Sbg7lrtQxPPOIEU rpmZLfCNJJoZj603613w/M8EiZw6MohzikTWcFc55RLYJPBWQ+9puZtx1DopW2jOwE0EWdWB rwEIAKpT62HgSzL9zwGe+WIUCMB+nOEjXAfvoUPUwk+YCEDcOdfkkM5FyBoJs8TCEuPXGXBO Cl5P5B8OYYnkHkGWutAVlUTV8KESOIm/KJIA7jJA+Ss9VhMjtePfgWexw+P8itFRSRrrwyUf E+0WcAevblUi45LjWWZgpg3A80tHP0iToOZ5MbdYk7YFBE29cDSleskfV80ZKxFv6koQocq0 vXzTfHvXNDELAuH7Ms/WJcdUzmPyBf3Oq6mKBBH8J6XZc9LjjNZwNbyvsHSrV5bgmu/THX2n g/3be+iqf6OggCiy3I1NSMJ5KtR0q2H2Nx2Vqb1fYPOID8McMV9Ll6rh8S8AEQEAAcLAfAQY AQgAJgIbDBYhBC3fcuWlpVuonapC4cI9kfOhJf6oBQJnEXWBBQkQ/lrSAAoJEMI9kfOhJf6o cakH+QHwDszsoYvmrNq36MFGgvAHRjdlrHRBa4A1V1kzd4kOUokongcrOOgHY9yfglcvZqlJ qfa4l+1oxs1BvCi29psteQTtw+memmcGruKi+YHD7793zNCMtAtYidDmQ2pWaLfqSaryjlzR /3tBWMyvIeWZKURnZbBzWRREB7iWxEbZ014B3gICqZPDRwwitHpH8Om3eZr7ygZck6bBa4MU o1XgbZcspyCGqu1xF/bMAY2iCDcq6ULKQceuKkbeQ8qxvt9hVxJC2W3lHq8dlK1pkHPDg9wO JoAXek8MF37R8gpLoGWl41FIUb3hFiu3zhDDvslYM4BmzI18QgQTQnotJH8= In-Reply-To: <20251113155107.GQ13846@twin.jikos.cz> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit 在 2025/11/14 02:21, David Sterba 写道: > On Thu, Nov 13, 2025 at 06:47:43PM +0530, Venkat Rao Bagalkote wrote: >> On 13/11/25 6:21 pm, Venkat Rao Bagalkote wrote: >>> Greetings!!! >>> >>> IBM CI has reported a kernel crash while running btrfs/023 test from >>> xfstest suite on IBM Power11 system. >>> >>> >>> Traces: >>> [  184.714500] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 >>> devid 1 transid 8 /dev/loop1 (7:1) scanned by mkfs.btrfs (2697) >>> [  184.714612] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 >>> devid 2 transid 8 /dev/loop2 (7:2) scanned by mkfs.btrfs (2697) >>> [  184.714731] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 >>> devid 3 transid 8 /dev/loop3 (7:3) scanned by mkfs.btrfs (2697) >>> [  184.714825] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 >>> devid 4 transid 8 /dev/loop4 (7:4) scanned by mkfs.btrfs (2697) >>> [  184.714918] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 >>> devid 5 transid 8 /dev/loop5 (7:5) scanned by mkfs.btrfs (2697) >>> [  184.720659] BTRFS info (device loop1): first mount of filesystem >>> b8c762d5-3f1a-4020-bca9-2e7e107e5363 >>> [  184.720694] BTRFS info (device loop1): using crc32c (crc32c-lib) >>> checksum algorithm >>> [  184.720708] BTRFS info (device loop1): forcing free space tree for >>> sector size 4096 with page size 65536 >>> [  184.725011] BTRFS info (device loop1): checking UUID tree >>> [  184.725060] BTRFS info (device loop1): enabling ssd optimizations >>> [  184.725068] BTRFS info (device loop1): turning on async discard >>> [  184.725075] BTRFS info (device loop1): enabling free space tree >>> [  184.735050] BUG: Unable to handle kernel data access at >>> 0x6696fffdda1ea4c2 >>> [  184.735072] Faulting instruction address: 0xc0000000007bd030 >>> [  184.735087] Oops: Kernel access of bad area, sig: 11 [#1] >>> [  184.735101] LE PAGE_SIZE=64K MMU=Radix  SMP NR_CPUS=8192 NUMA pSeries >>> [  184.735118] Modules linked in: loop nft_fib_inet nft_fib_ipv4 >>> nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 >>> nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 >>> nf_defrag_ipv4 bonding tls ip_set rfkill nf_tables sunrpc nfnetlink >>> pseries_rng vmx_crypto fuse ext4 crc16 mbcache jbd2 sd_mod sg ibmvscsi >>> ibmveth scsi_transport_srp pseries_wdt >>> [  184.735316] CPU: 22 UID: 0 PID: 1948 Comm: systemd-udevd Kdump: >>> loaded Tainted: G    B               6.18.0-rc5-next-20251112 #1 >>> VOLUNTARY >>> [  184.735342] Tainted: [B]=BAD_PAGE >>> [  184.735352] Hardware name: IBM,9080-HEX Power11 (architected) >>> 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries >>> [  184.735369] NIP:  c0000000007bd030 LR: c0000000007bcef4 CTR: >>> c000000000902824 >>> [  184.735386] REGS: c00000006fdb7910 TRAP: 0380   Tainted: G B >>>       (6.18.0-rc5-next-20251112) >>> [  184.735404] MSR:  8000000000009033   CR: >>> 28004402  XER: 20040000 >>> [  184.735460] CFAR: c0000000007bcf98 IRQMASK: 0 >>> [  184.735460] GPR00: c0000000007bcef4 c00000006fdb7bb0 >>> c0000000026aa100 0000000000000000 >>> [  184.735460] GPR04: 0000000000000cc0 000000013470ff60 >>> 00000000000006f0 c0000009906ff4f0 >>> [  184.735460] GPR08: 669164fddb1e9c02 0000000000000800 >>> 000000098d420000 0000000000000000 >>> [  184.735460] GPR12: c000000000902824 c000000991e0e700 >>> 0000000000000000 0000000000000000 >>> [  184.735460] GPR16: 0000000000000000 0000000000000000 >>> 0000000000000000 0000000000000000 >>> [  184.735460] GPR20: 0000000000000000 0000000000000000 >>> 0000000000000000 0000000000000000 >>> [  184.735460] GPR24: 00000000000006ef 0000000000001000 >>> ffffffffffffffff c00c000000402680 >>> [  184.735460] GPR28: c0000000008f312c 0000000000000cc0 >>> 6696fffdda1e9cc2 c00000000701e880 >>> [  184.735688] NIP [c0000000007bd030] kmem_cache_alloc_noprof+0x4ac/0x708 >>> [  184.735711] LR [c0000000007bcef4] kmem_cache_alloc_noprof+0x370/0x708 >>> [  184.735729] Call Trace: >>> [  184.735738] [c00000006fdb7bb0] [c0000000007bcef4] >>> kmem_cache_alloc_noprof+0x370/0x708 (unreliable) >>> [  184.735766] [c00000006fdb7c30] [c0000000008f312c] >>> getname_flags.part.0+0x54/0x30c >>> [  184.735793] [c00000006fdb7c80] [c0000000009028a0] >>> sys_unlinkat+0x7c/0xe4 >>> [  184.735814] [c00000006fdb7cc0] [c000000000039d50] >>> system_call_exception+0x1e0/0x450 >>> [  184.735839] [c00000006fdb7e50] [c00000000000d05c] >>> system_call_vectored_common+0x15c/0x2ec >>> [  184.735866] ---- interrupt: 3000 at 0x7fff9df366bc >>> [  184.735881] NIP:  00007fff9df366bc LR: 00007fff9df366bc CTR: >>> 0000000000000000 >>> [  184.735897] REGS: c00000006fdb7e80 TRAP: 3000   Tainted: G B >>>       (6.18.0-rc5-next-20251112) >>> [  184.735913] MSR:  800000000280f033 >>>   CR: 48004402  XER: 00000000 >>> [  184.735989] IRQMASK: 0 >>> [  184.735989] GPR00: 0000000000000124 00007fffe0b3a3a0 >>> 00007fff9e037d00 0000000000000006 >>> [  184.735989] GPR04: 000000013470ff60 0000000000000000 >>> 0000000000001000 00007fff9e0314b8 >>> [  184.735989] GPR08: 0000000000000271 0000000000000000 >>> 0000000000000000 0000000000000000 >>> [  184.735989] GPR12: 0000000000000000 00007fff9e8c4ca0 >>> 00000001161e5a78 00007fffe0b3ab10 >>> [  184.735989] GPR16: 0000000000000003 0000000000000000 >>> 00000001161aaed0 00000001161e9750 >>> [  184.735989] GPR20: 00007fffe0b3a780 00000001161eb260 >>> 00000001161eb320 0000000000000008 >>> [  184.735989] GPR24: 00000001347061c0 0000000000000000 >>> 0000000000000009 00000001347061c0 >>> [  184.735989] GPR28: 0000000000000006 00007fffe0b3a53c >>> 0000000134715740 0000000000100000 >>> [  184.736216] NIP [00007fff9df366bc] 0x7fff9df366bc >>> [  184.736231] LR [00007fff9df366bc] 0x7fff9df366bc >>> [  184.736251] ---- interrupt: 3000 >>> [  184.736262] Code: f8610030 4082fccc 4bfffc28 2c3e0000 4182ff98 >>> 2c3b0000 4182ff90 60000000 3b40ffff 813f0030 e91f00c0 38d80001 >>> <7f7e482a> 7d3e4a14 79270022 552ac03e >>> [  184.736362] ---[ end trace 0000000000000000 ]--- >>> > > Thanks for the report. > >> Mostly the issue got introduced by one of the below three commits. As >> reverting these three, this issue is not seen. Mind to share the block size of the fs? 4K or 64K? >> >> >> 9299051573d9 e8ea54f86241 cd93c0aad7e3 > > 9299051573d9 btrfs: enable encoded read/write/send for bs > ps cases > e8ea54f86241 btrfs: make read verification handle bs > ps cases without large folios > cd93c0aad7e3 btrfs: make btrfs_repair_io_failure() handle bs > ps cases without large folios > The problem looks weird, as for 64K page sized power11, there should be no path involved for bs > ps cases. Thanks, Qu