On Tue, Feb 28, 2023 at 09:17:16AM -0700, Nathan Chancellor wrote:

Hi Greg and Sasha,

Please apply commit 4e4a08868f15 ("crypto: arm64/sm4-gcm - Fix possible crash in GCM cryption") to 6.2, as it fixes a crash that I see when booting Arch Linux ARM's aarch64 configuration [1] in QEMU:

[ 1.512110] Unable to handle kernel paging request at virtual address fffffe000024d588 [ 1.512357] Mem abort info: [ 1.512542] ESR = 0x0000000097c38004 [ 1.512695] EC = 0x25: DABT (current EL), IL = 32 bits [ 1.512863] SET = 0, FnV = 0 [ 1.512967] EA = 0, S1PTW = 0 [ 1.513075] FSC = 0x04: level 0 translation fault [ 1.513236] Data abort info: [ 1.513343] Access size = 8 byte(s) [ 1.513618] SSE = 0, SRT = 3 [ 1.513721] SF = 1, AR = 0 [ 1.513824] CM = 0, WnR = 0 [ 1.513964] swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000041ef8000 [ 1.514162] [fffffe000024d588] pgd=0000000000000000, p4d=0000000000000000 [ 1.514932] Internal error: Oops: 0000000097c38004 [#1] PREEMPT SMP [ 1.515206] Modules linked in: [ 1.515477] CPU: 0 PID: 113 Comm: cryptomgr_test Not tainted 6.2.1-ARCH #1 [ 1.515755] Hardware name: linux,dummy-virt (DT) [ 1.516029] pstate: a1400009 (NzCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) [ 1.516277] pc : kfree+0x30/0xb0 [ 1.516766] lr : skcipher_walk_done+0x198/0x2b0 [ 1.516934] sp : ffff80000ace3820 [ 1.517042] x29: ffff80000ace3820 x28: 0000000000000000 x27: 0000000000000400 [ 1.517316] x26: ffff80000937d880 x25: ffff0000034d0400 x24: ffff0000036efe00 [ 1.517557] x23: ffff800008088730 x22: ffff0000036efd00 x21: ffff80000ace3998 [ 1.517791] x20: 0000000000000000 x19: ffff80000ace3900 x18: ffffffffffffffff [ 1.518022] x17: 0000000000000000 x16: 0000000000000000 x15: ffffffffffffffff [ 1.518263] x14: ffff80008ace3ce7 x13: 0000000000000000 x12: 0000000000000000 [ 1.518510] x11: ffff80000ace38c8 x10: ffff80000ace38d0 x9 : 0000000000000001 [ 1.518757] x8 : 0000000000000000 x7 : ffff80000ace38a8 x6 : 0000000000000001 [ 1.518993] x5 : ffff80000ace3998 x4 : fffffc0000000000 x3 : ffff80000ace3b00 [ 1.519242] x2 : 000002000024d580 x1 : ffff800009356218 x0 : fffffe000024d580 [ 1.519549] Call trace: [ 1.519654] kfree+0x30/0xb0 [ 1.519785] skcipher_walk_done+0x198/0x2b0 [ 1.519931] gcm_crypt+0xd8/0x170 [ 1.520047] gcm_encrypt+0x90/0xbc [ 1.520153] crypto_aead_encrypt+0x24/0x40 [ 1.520285] test_aead_vec_cfg+0x21c/0x770 [ 1.520422] test_aead+0xb4/0x140 [ 1.520538] alg_test_aead+0x94/0x190 [ 1.520662] alg_test+0x34c/0x520 [ 1.520770] cryptomgr_test+0x24/0x44 [ 1.520889] kthread+0xe4/0xf0 [ 1.520993] ret_from_fork+0x10/0x20 [ 1.521300] Code: b25657e4 d34cfc42 d37ae442 8b040040 (f9400403) [ 1.521691] ---[ end trace 0000000000000000 ]---

Cheers, Nathan

Now queued up, thanks.

greg k-h