Hi all!
I have some weird bug with Firefly-RK3399 board: kernel suddenly crashes on large file operations (starting from 300Mb). I had this with different kernels (both Rockchip and mainline), so it seems to be hardware problem. In some cases starting infinite loop calling sync command together with main operation can delay or even prevent crash (depends on operation and delay between syncs) but i don’t think keeping it running during all session is a good idea. Can it be fixed somehow?
I attach kernel log with modelled operation (1.6Gb was written before crash):
dd if=/dev/zero of=test bs=1G count=3
[ 119.555187] SError Interrupt on CPU1, code 0xbf000000 -- SError
[ 119.555189] CPU: 1 PID: 20401 Comm: dd Not tainted 5.4.5-1-ARTIX #1
[ 119.555191] Hardware name: Firefly-RK3399 Board (DT)
[ 119.555192] pstate: 20000005 (nzCv daif -PAN -UAO)
[ 119.555193] pc : __arch_copy_from_user+0x1bc/0x240
[ 119.555194] lr : copyin+0x90/0xa0
[ 119.555196] sp : ffff80001985bb20
[ 119.555196] x29: ffff80001985bb20 x28: 0000000000000000
[ 119.555199] x27: 0000000000001000 x26: ffff800010f5f350
[ 119.555202] x25: 0000000000000000 x24: ffff80001985bd50
[ 119.555204] x23: ffff80001985bd40 x22: 0000000000000000
[ 119.555207] x21: 0000000000001000 x20: ffff000009c01000
[ 119.555209] x19: 0000000000001000 x18: 0000000000000014
[ 119.555212] x17: 00000000f9f64b4b x16: 000000004c3a51cb
[ 119.555214] x15: 000000007aeec261 x14: 0000000000000000
[ 119.555217] x13: 0000000000000000 x12: 0000000000000000
[ 119.555219] x11: 0000000000000000 x10: 0000000000000000
[ 119.555221] x9 : 0000000000000000 x8 : 0000000000000000
[ 119.555224] x7 : 0000000000000000 x6 : ffff000009c00050
[ 119.555226] x5 : ffff000009c01000 x4 : 0000000000000000
[ 119.555229] x3 : 0000ffff8419d000 x2 : 0000000000000f40
[ 119.555231] x1 : 0000ffff8419d090 x0 : ffff000009c00000
[ 119.555234] Kernel panic - not syncing: Asynchronous SError Interrupt
[ 119.555236] CPU: 1 PID: 20401 Comm: dd Not tainted 5.4.5-1-ARTIX #1
[ 119.555237] Hardware name: Firefly-RK3399 Board (DT)
[ 119.555238] Call trace:
[ 119.555239] dump_backtrace+0x0/0x170
[ 119.555240] show_stack+0x24/0x30
[ 119.555241] dump_stack+0xac/0xd0
[ 119.555242] panic+0x144/0x31c
[ 119.555243] __stack_chk_fail+0x0/0x28
[ 119.555244] arm64_serror_panic+0x84/0x90
[ 119.555245] do_serror+0x11c/0x120
[ 119.555246] el1_error+0x84/0xf8
[ 119.555248] __arch_copy_from_user+0x1bc/0x240
[ 119.555249] iov_iter_copy_from_user_atomic+0xec/0x370
[ 119.555250] generic_perform_write+0xf0/0x1d0
[ 119.555251] __generic_file_write_iter+0x134/0x1b8
[ 119.555252] ext4_file_write_iter+0xd0/0x338
[ 119.555253] new_sync_write+0xf8/0x190
[ 119.555254] __vfs_write+0x74/0x90
[ 119.555255] vfs_write+0xe4/0x1c8
[ 119.555257] ksys_write+0x78/0x100
[ 119.555257] __arm64_sys_write+0x24/0x30
[ 119.555259] el0_svc_handler+0x84/0x190
[ 119.555260] el0_svc+0x8/0xc
[ 119.555280] SMP: stopping secondary CPUs
[ 119.555280] Kernel Offset: disabled
[ 119.555282] CPU features: 0x0002,20006008
[ 119.555283] Memory Limit: none