ip6_tunnel: ip6tnl2 xmit: Local address not yet configured!
ip6_tunnel: ip6tnl2 xmit: Local address not yet configured!
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P22069/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=96525, q=1038 ncpus=2)
task:syz.5.3801 state:R running task stack:23080 pid:22069 tgid:22038 ppid:19635 task_flags:0x400140 flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7190
irqentry_exit+0x1d8/0x8c0 kernel/entry/common.c:216
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:422 [inline]
RIP: 0010:unwind_next_frame+0x1519/0x20b0 arch/x86/kernel/unwind_orc.c:663
Code: bf 69 02 ba 08 00 00 00 4c 89 ef 4d 8d 7d 34 4c 01 f5 48 89 ee e8 e7 e8 ff ff 84 c0 0f 84 71 ee ff ff 48 89 ef e8 c7 e0 ff ff <49> 8d 7d 40 48 89 fa 48 89 c5 48 b8 00 00 00 00 00 fc ff df 48 c1
RSP: 0000:ffffc90003af65e8 EFLAGS: 00000202
RAX: ffff8880312ec000 RBX: 0000000000000001 RCX: ffffc90003af8000
RDX: ffffc90003af7001 RSI: ffffc90003af7058 RDI: ffffc90003af7058
RBP: ffffc90003af7058 R08: 0000000000000001 R09: 000000005ae111b5
R10: 0000000000000002 R11: 0000000000077105 R12: ffffc90003af66a8
R13: ffffc90003af6658 R14: ffffc90003af7078 R15: ffffc90003af668c
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
kasan_save_track+0x14/0x30 mm/kasan/common.c:77
poison_kmalloc_redzone mm/kasan/common.c:397 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:414
kasan_kmalloc include/linux/kasan.h:262 [inline]
__do_kmalloc_node mm/slub.c:5657 [inline]
__kmalloc_node_track_caller_noprof+0x353/0x930 mm/slub.c:5764
__kmemdup_nul mm/util.c:64 [inline]
kstrdup+0x53/0x100 mm/util.c:84
kstrdup_const+0x63/0x80 mm/util.c:104
__kernfs_new_node+0x9b/0x990 fs/kernfs/dir.c:633
kernfs_new_node+0x13c/0x1e0 fs/kernfs/dir.c:716
__kernfs_create_file+0x53/0x350 fs/kernfs/file.c:1057
sysfs_add_file_mode_ns+0x207/0x3c0 fs/sysfs/file.c:313
create_files fs/sysfs/group.c:82 [inline]
internal_create_group+0x597/0xf70 fs/sysfs/group.c:189
internal_create_groups+0x9d/0x150 fs/sysfs/group.c:229
setup_gid_attrs drivers/infiniband/core/sysfs.c:1162 [inline]
ib_setup_port_attrs+0x41f/0x600 drivers/infiniband/core/sysfs.c:1439
add_one_compat_dev+0x5b3/0x820 drivers/infiniband/core/device.c:1005
add_compat_devs drivers/infiniband/core/device.c:1063 [inline]
enable_device_and_get+0x336/0x3f0 drivers/infiniband/core/device.c:1374
ib_register_device drivers/infiniband/core/device.c:1487 [inline]
ib_register_device+0x8de/0xe70 drivers/infiniband/core/device.c:1433
rxe_register_device+0x277/0x340 drivers/infiniband/sw/rxe/rxe_verbs.c:1556
rxe_net_add+0x95/0xf0 drivers/infiniband/sw/rxe/rxe_net.c:586
rxe_newlink+0x70/0x190 drivers/infiniband/sw/rxe/rxe.c:234
nldev_newlink+0x3a6/0x680 drivers/infiniband/core/nldev.c:1797
rdma_nl_rcv_msg+0x38a/0x6e0 drivers/infiniband/core/netlink.c:195
rdma_nl_rcv_skb.constprop.0.isra.0+0x2d0/0x430 drivers/infiniband/core/netlink.c:239
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592
___sys_sendmsg+0x134/0x1d0 net/socket.c:2646
__sys_sendmsg+0x16d/0x220 net/socket.c:2678
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f134af8f749
RSP: 002b:00007f134be8c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f134b1e6180 RCX: 00007f134af8f749
RDX: 0000000020000000 RSI: 00002000000002c0 RDI: 0000000000000007
RBP: 00007f134b013f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f134b1e6218 R14: 00007f134b1e6180 R15: 00007ffc05eb0778
rcu: rcu_preempt kthread starved for 10513 jiffies! g96525 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28064 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 22232 Comm: syz.7.3819 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: e9 6d 1b 5e 00 be 03 00 00 00 5b e9 92 dd ed 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 <65> 48 8b 15 78 b9 f3 11 65 8b 05 89 b9 f3 11 a9 00 01 ff 00 74 1d
RSP: 0018:ffffc90005b66440 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc90005b6640c
RDX: 0000000000000000 RSI: ffffffff8201c9e5 RDI: ffff888068778484
RBP: ffffc90005b66598 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff888068778b30 R12: 000000000000000a
R13: 000000000000002b R14: ffff88801f296600 R15: 0000000000000400
FS: 0000000000000000(0000) GS:ffff8881248f6000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00613b6ad8 CR3: 0000000088a4a000 CR4: 00000000003526f0
Call Trace:
do_shrink_slab+0x205/0x1130 mm/shrinker.c:395
shrink_slab_memcg mm/shrinker.c:550 [inline]
shrink_slab+0xa1f/0x12b0 mm/shrinker.c:628
shrink_node_memcgs mm/vmscan.c:6022 [inline]
shrink_node+0x918/0x3bb0 mm/vmscan.c:6061
shrink_zones mm/vmscan.c:6300 [inline]
do_try_to_free_pages+0x362/0x1920 mm/vmscan.c:6362
try_to_free_mem_cgroup_pages+0x31b/0x740 mm/vmscan.c:6690
try_charge_memcg+0x42a/0xd30 mm/memcontrol.c:2388
try_charge mm/memcontrol.c:2530 [inline]
charge_memcg+0x8a/0x230 mm/memcontrol.c:4728
__mem_cgroup_charge+0x2b/0x1e0 mm/memcontrol.c:4745
mem_cgroup_charge include/linux/memcontrol.h:663 [inline]
shmem_alloc_and_add_folio+0x50c/0xc20 mm/shmem.c:1942
shmem_get_folio_gfp+0x67f/0x1610 mm/shmem.c:2556
shmem_get_folio mm/shmem.c:2662 [inline]
shmem_write_begin+0x1a4/0x3b0 mm/shmem.c:3315
generic_perform_write+0x3c4/0x900 mm/filemap.c:4314
shmem_file_write_iter+0x10e/0x140 mm/shmem.c:3490
__kernel_write_iter+0x31a/0xb10 fs/read_write.c:619
dump_emit_page fs/coredump.c:1298 [inline]
dump_user_range+0x413/0xb70 fs/coredump.c:1372
elf_core_dump+0x29c3/0x3c10 fs/binfmt_elf.c:2111
coredump_write fs/coredump.c:1049 [inline]
do_coredump fs/coredump.c:1126 [inline]
vfs_coredump+0x2b85/0x55e0 fs/coredump.c:1200
get_signal+0x22e1/0x26d0 kernel/signal.c:3019
arch_do_signal_or_restart+0x8f/0x7e0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x38a/0x8c0 kernel/entry/common.c:196
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f4c5ca4f6b7
Code: 88 15 42 60 ec 00 88 05 3f 60 ec 00 c3 50 48 8d 35 e9 48 1c 00 48 8d 3d ef 48 1c 00 31 c0 e8 20 f7 ff ff 53 89 fb 48 83 ec 10 <64> 8b 04 25 94 ff ff ff 85 c0 74 2a 89 fe 31 c0 bf 3c 00 00 00 e8
RSP: 002b:00007f4c5d9b31a0 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007f4c5cb8f749
RDX: 00007f4c5d9b31c0 RSI: 00007f4c5d9b32f0 RDI: 000000000000000b
RBP: 00007f4c5cc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f4c5cde6218 R14: 00007f4c5cde6180 R15: 00007ffeb4317518