Hello, I got the following Oops on doing a simple ip link set canX up, running on an i.MX8MM SoC. This was reproduced with some automated testing, I have not tried to reproduce it so far. Any idea or hint? It seems systematic, introduced around 12th september on the v6.6.y branch. [ 75.694960] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP [ 75.926065] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 75.933032] pc : timecounter_read+0x18/0x70 [ 75.937230] lr : mcp251xfd_ring_init+0x1dc/0x944 [mcp251xfd] [ 75.942903] sp : ffffffc08496b460 [ 75.946218] x29: ffffffc08496b460 x28: 0000000000000000 x27: ffffff800a7608c0 [ 75.953364] x26: 0000000000000001 x25: 0000000000000000 x24: ffffff800c50a000 [ 75.960504] x23: ffffff800a7628c0 x22: 0000000000000000 x21: 0000000000000460 [ 75.967648] x20: ffffff800a760e00 x19: ffffff800a763830 x18: 0000000000000000 [ 75.974796] x17: 000000040044ffff x16: 00500072b5593519 x15: 0000000000000000 [ 75.981942] x14: 000000000003ecee x13: 0000000000000299 x12: 0000000000000002 [ 75.989083] x11: 0000000000000000 x10: 0000000000000950 x9 : ffffffc08496aef0 [ 75.996224] x8 : ffffff800a760de0 x7 : 0000000000000000 x6 : 00000000256ab2b4 [ 76.003365] x5 : 0000000000000001 x4 : 0000000000002f70 x3 : 0000000000000004 [ 76.010508] x2 : 0000000000000010 x1 : ffffff800a761680 x0 : 0000000000000000 [ 76.017652] Call trace: [ 76.020099] timecounter_read+0x18/0x70 [ 76.023942] mcp251xfd_ring_init+0x1dc/0x944 [mcp251xfd] [ 76.029263] mcp251xfd_chip_start+0x228/0x28c [mcp251xfd] [ 76.034669] mcp251xfd_open+0x8c/0x298 [mcp251xfd] [ 76.039468] __dev_open+0x100/0x1d8 [ 76.042967] __dev_change_flags+0x194/0x20c [ 76.047158] dev_change_flags+0x24/0x6c [ 76.051002] do_setlink+0x27c/0xeb0 [ 76.054495] __rtnl_newlink+0x520/0x88c [ 76.058333] rtnl_newlink+0x50/0x7c [ 76.061824] rtnetlink_rcv_msg+0x128/0x378 [ 76.065922] netlink_rcv_skb+0x60/0x130 [ 76.069764] rtnetlink_rcv+0x18/0x24 [ 76.073342] netlink_unicast+0x300/0x36c [ 76.077268] netlink_sendmsg+0x194/0x400 [ 76.081194] ____sys_sendmsg+0x214/0x248 [ 76.085120] ___sys_sendmsg+0xb0/0xfc [ 76.088788] __sys_sendmsg+0x78/0xd0 [ 76.092370] __arm64_sys_sendmsg+0x24/0x30 [ 76.096470] invoke_syscall.constprop.0+0x50/0xec [ 76.101179] do_el0_svc+0x40/0xc8 [ 76.104497] el0_svc+0x48/0x148 [ 76.107643] el0t_64_sync_handler+0x120/0x12c [ 76.112002] el0t_64_sync+0x190/0x194 [ 76.115677] Code: 910003fd f9000bf3 aa0003f3 f9400000 (f9400001) [ 76.121781] ---[ end trace 0000000000000000 ]--- Francesco
