linux-kernel - [Bug report] kernel BUG at include/linux/scatterlist.h

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Message-ID: <20241122045106.tzhvm2wrqvttub6k@dell-per750-06-vm-08.rhts.eng.pek2.redhat.com>
Date: Fri, 22 Nov 2024 12:51:06 +0800
From: Zorro Lang <zlang@...hat.com>
To: linux-crypto@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Herbert Xu <herbert@...dor.apana.org.au>
Subject: [Bug report] kernel BUG at include/linux/scatterlist.h

Hi,

I hit a kernel panic on aarch64 several times recently, when I tried to do a
fstests test. It's not related with fstests, due to I hit it when I boot the
latest mainline linux kernel (HEAD=fc39fb56917bb3cb53e99560ca3612a84456ada2).

The console log looks like related with crypto things, I'm not familar with
it, so just send this email to linux-crypto@ and cc linux-kernel@.

I hit this panic several times, I did nothing except building and installing
the latest kernel and then boot it, then it crash directly on booting time.
Looks like crash from:

       183 static inline void sg_set_buf(struct scatterlist *sg, const void *buf,
       184                               unsigned int buflen)
       185 {
       186 #ifdef CONFIG_DEBUG_SG
==>    187         BUG_ON(!virt_addr_valid(buf));
       188 #endif
       189         sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
       190 }

If someone need, I can provide the big linux/.config file.

Thanks,
Zorro


[1]
...
[    7.313015] registered taskstats version 1 
[    7.320132] Loading compiled-in X.509 certificates 
[    7.347635] Loaded X.509 cert 'Build time autogenerated kernel key: ed2b2ec16b583dda991830c146172ef4fd4cd1cf' 
[    7.522429] Demotion targets for Node 0: null 
[    7.523941] debug_vm_pgtable: [debug_vm_pgtable         ]: Validating architecture page table helpers 
[    7.530102] page_owner is disabled 
[    7.532083] Key type .fscrypt registered 
[    7.533070] Key type fscrypt-provisioning registered 
[    7.535734] Key type big_key registered 
[    7.539305] Key type encrypted registered 
[    7.541143] ima: secureboot mode disabled 
[    7.542177] ima: No TPM chip found, activating TPM-bypass! 
[    7.543508] Loading compiled-in module X.509 certificates 
[    7.546783] Loaded X.509 cert 'Build time autogenerated kernel key: ed2b2ec16b583dda991830c146172ef4fd4cd1cf' 
[    7.549427] ima: Allocated hash algorithm: sha256 
[    7.550827] ima: No architecture policies found 
[    7.552706] evm: Initialising EVM extended attributes: 
[    7.554011] evm: security.selinux 
[    7.554842] evm: security.SMACK64 (disabled) 
[    7.555877] evm: security.SMACK64EXEC (disabled) 
[    7.557025] evm: security.SMACK64TRANSMUTE (disabled) 
[    7.558367] evm: security.SMACK64MMAP (disabled) 
[    7.559696] evm: security.apparmor (disabled) 
[    7.560726] evm: security.ima 
[    7.561451] evm: security.capability 
[    7.562297] evm: HMAC attrs: 0x1 
[    7.631769] Running certificate verification RSA selftest 
[    7.652546] ------------[ cut here ]------------ 
[    7.653656] kernel BUG at include/linux/scatterlist.h:187! 
[    7.654975] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP 
[    7.656386] Modules linked in: 
[    7.657104] CPU: 3 UID: 0 PID: 176 Comm: cryptomgr_test Not tainted 6.12.0+ #1 
[    7.658822] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0 02/06/2015 
[    7.660575] pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) 
[    7.662385] pc : sg_init_one+0x124/0x150 
[    7.663401] lr : sg_init_one+0x34/0x150 
[    7.664380] sp : ffff800083e87950 
[    7.665240] x29: ffff800083e87950 x28: 0000000000000048 x27: ffff3fc6f3aabc00 
[    7.667078] x26: ffff3fc6f3aabc48 x25: ffff800083e87a60 x24: 1fffe7f8de689885 
[    7.668895] x23: ffffb3207fb10fe0 x22: 0000000000000100 x21: ffffb3207fb7d880 
[    7.670774] x20: ffff800083e87a20 x19: 0000b3207fb7d880 x18: 0000000000000000 
[    7.672568] x17: ffffb3207de83630 x16: ffffb3207de8306c x15: ffffb3207de78cb0 
[    7.674370] x14: ffffb3207d916474 x13: ffffb3207cf38c70 x12: ffff7000107d0f48 
[    7.676156] x11: 1ffff000107d0f47 x10: ffff7000107d0f47 x9 : dfff800000000000 
[    7.677939] x8 : ffff800083e87a40 x7 : 0000000000000000 x6 : 0000000000000004 
[    7.679738] x5 : ffff800083e87a20 x4 : 0000000000000000 x3 : 1ffff000107d0f44 
[    7.681515] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000600000000000 
[    7.683305] Call trace: 
[    7.683926]  sg_init_one+0x124/0x150 (P) 
[    7.684919]  sg_init_one+0x34/0x150 (L) 
[    7.685890]  rsassa_pkcs1_verify+0x288/0x980 
[    7.686976]  test_sig_one+0x344/0x848 
[    7.687916]  alg_test_sig+0xc0/0x168 
[    7.688859]  alg_test+0x2e0/0xd58 
[    7.689715]  cryptomgr_test+0x58/0x88 
[    7.690702]  kthread+0x270/0x2f8 
[    7.691542]  ret_from_fork+0x10/0x20 
[    7.692470] Code: a8c47bfd d50323bf d65f03c0 d4210000 (d4210000)  
[    7.694042] ---[ end trace 0000000000000000 ]--- 
[    7.695246] Kernel panic - not syncing: Oops - BUG: Fatal exception 
[    7.696819] SMP: stopping secondary CPUs 
[    7.697868] Kernel Offset: 0x331ffcf20000 from 0xffff800080000000 
[    7.699457] PHYS_OFFSET: 0xffffc03ac0000000 
[    7.700505] CPU features: 0x00,40000045,00801240,82004203 
[    7.701867] Memory Limit: none 
[    7.702637] ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception ]---