NET: Registered PF_CAN protocol family can: raw protocol can: broadcast manager protocol can: netlink gateway - max_hops=1 can: SAE J1939 can: isotp protocol (max_pdu_size 8300) Bluetooth: RFCOMM TTY layer initialized Bluetooth: RFCOMM socket layer initialized Bluetooth: RFCOMM ver 1.11 Bluetooth: BNEP (Ethernet Emulation) ver 1.3 Bluetooth: BNEP filters: protocol multicast Bluetooth: BNEP socket layer initialized Bluetooth: HIDP (Human Interface Emulation) ver 1.2 Bluetooth: HIDP socket layer initialized NET: Registered PF_RXRPC protocol family Key type rxrpc registered Key type rxrpc_s registered NET: Registered PF_KCM protocol family l2tp_core: L2TP core driver, V2.0 l2tp_ppp: PPPoL2TP kernel driver, V2.0 l2tp_ip: L2TP IP encapsulation support (L2TPv3) l2tp_netlink: L2TP netlink interface l2tp_eth: L2TP ethernet pseudowire support (L2TPv3) l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3) NET: Registered PF_PHONET protocol family 8021q: 802.1Q VLAN Support v1.8 sctp: Hash tables configured (bind 32/56) NET: Registered PF_RDS protocol family Registered RDS/infiniband transport Registered RDS/tcp transport tipc: Activated (version 2.0.0) NET: Registered PF_TIPC protocol family tipc: Started in single node mode smc: adding smcd device lo without pnetid NET: Registered PF_SMC protocol family 9pnet: Installing 9P2000 support NET: Registered PF_IEEE802154 protocol family Key type dns_resolver registered Key type ceph registered libceph: loaded (mon/osd proto 15/24) batman_adv: B.A.T.M.A.N. advanced syzkaller (compatibility version 15) loaded openvswitch: Open vSwitch switching datapath NET: Registered PF_VSOCK protocol family mpls_gso: MPLS GSO support IPI shorthand broadcast: enabled sched_clock: Marking stable (44170029516, 328886360)->(44847617203, -348701327) call_rcu_tasks() has failed boot-time tests. rcu_tasks: RTGS_WAIT_SCAN_HOLDOUTS(6) since 4 g:5 i:0 kCuUP l:25 ------------[ cut here ]------------ ret < 0 WARNING: kernel/rcu/tasks.h:1541 at rcu_tasks_verify_self_tests kernel/rcu/tasks.h:1541 [inline], CPU#0: swapper/0/1 WARNING: kernel/rcu/tasks.h:1541 at rcu_tasks_verify_work_fn+0x1b6/0x270 kernel/rcu/tasks.h:1553, CPU#0: swapper/0/1 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026 RIP: 0010:rcu_tasks_verify_self_tests kernel/rcu/tasks.h:1541 [inline] RIP: 0010:rcu_tasks_verify_work_fn+0x1b6/0x270 kernel/rcu/tasks.h:1553 Code: 80 3c 10 00 0f 85 b5 00 00 00 48 8b 35 5b 5a 77 0c b9 64 00 00 00 bf 08 00 00 00 48 c7 c2 a0 ba 99 9b e8 ad 6d e2 ff eb 97 90 <0f> 0b 90 eb 91 48 89 df e8 7d 8a 8f 00 e9 69 ff ff ff 48 89 df e8 RSP: 0000:ffffc90000067cd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffffff8edeb928 RCX: 0000000000000000 RDX: 1ffffffff1dbd725 RSI: ffffffff81e97b49 RDI: fffff5200000cf6d RBP: 1ffff9200000cf9a R08: 0000000000000007 R09: 0000000000000000 R10: 8000000000000000 R11: 0000000000000001 R12: 0000000000000bb8 R13: 00000000ffffffff R14: 0000000000000001 R15: ffffffff8edeb928 FS: 0000000000000000(0000) GS:ffff888123b5d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000eb96000 CR4: 00000000003526f0 Call Trace: rcu_tasks_verify_schedule_work+0x95/0xa0 kernel/rcu/tasks.h:1565 do_one_initcall+0x11c/0x6f0 init/main.c:1362 do_initcall_level init/main.c:1424 [inline] do_initcalls init/main.c:1440 [inline] do_basic_setup init/main.c:1460 [inline] kernel_init_freeable+0x6ea/0x7b0 init/main.c:1675 kernel_init+0x21/0x1e0 init/main.c:1565 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245