rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2150 jiffies s: 897 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2102 Comm: syz-executor.3 Not tainted 6.1.74-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data kernel/kcov.c:235 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0x80 kernel/kcov.c:311 Code: 89 f8 89 f6 49 ff c2 4c 89 11 48 c7 44 0a 08 05 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 0f 1f 00 4c 8b 04 24 <65> 48 8b 0d 64 4e d5 7e 65 8b 05 65 4e d5 7e a9 00 01 ff 00 74 10 RSP: 0018:ffffc90001b979c0 EFLAGS: 00000202 RAX: ffffffff82aba90f RBX: 0000000040000000 RCX: ffff888103283680 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 0000000000000002 R08: ffffffff82aba922 R09: 0000000000000000 R10: 0000000000000000 R11: ffff888103283680 R12: 0000000040000000 R13: 0000000000000000 R14: ffff88811410cffa R15: 0000000000000000 FS: 0000555555add480(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b84f62440 CR3: 000000010a3e8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: xa_is_internal include/linux/xarray.h:171 [inline] xa_is_node include/linux/xarray.h:1242 [inline] xa_get_mark+0x152/0x1e0 lib/xarray.c:1948 devlinks_xa_find_get+0x82/0x260 net/devlink/leftover.c:308 devlinks_xa_find_get_first net/devlink/leftover.c:328 [inline] devlink_nl_cmd_port_get_dumpit+0x52/0x270 net/devlink/leftover.c:1556 netlink_dump+0x21f/0x530 net/netlink/af_netlink.c:2231 __netlink_dump_start+0x2b0/0x370 net/netlink/af_netlink.c:2335 genl_family_rcv_msg_dumpit net/netlink/genetlink.c:714 [inline] genl_family_rcv_msg net/netlink/genetlink.c:830 [inline] genl_rcv_msg+0x4bf/0x610 net/netlink/genetlink.c:850 netlink_rcv_skb+0x10a/0x1d0 net/netlink/af_netlink.c:2508 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x46d/0x530 net/netlink/af_netlink.c:1352 netlink_sendmsg+0x57f/0x660 net/netlink/af_netlink.c:1874 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] __sys_sendto+0x389/0x450 net/socket.c:2148 __do_sys_sendto net/socket.c:2160 [inline] __se_sys_sendto net/socket.c:2156 [inline] __x64_sys_sendto+0x24/0x30 net/socket.c:2156 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f534c600783 Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d 81 d7 0f 00 00 41 89 ca 74 14 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 75 c3 0f 1f 40 00 55 48 83 ec 30 44 89 4c 24 RSP: 002b:00007ffcfe7e7ad8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f534d246620 RCX: 00007f534c600783 RDX: 0000000000000034 RSI: 00007f534d246670 RDI: 0000000000000005 RBP: 0000000000000005 R08: 00007ffcfe7e7af4 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 00007ffcfe7e7b68 R14: 00007f534d246670 R15: 0000000000000000