------------[ cut here ]------------
WARNING: CPU: 0 PID: 6307 at ./include/net/dst.h:238 dst_hold include/net/dst.h:238 [inline]
WARNING: CPU: 0 PID: 6307 at ./include/net/dst.h:238 dst_cache_per_cpu_get+0x29b/0x2b0 net/core/dst_cache.c:50
Modules linked in:
CPU: 0 UID: 0 PID: 6307 Comm: syz.2.120 Not tainted 6.14.0-syzkaller-13320-g420aabef3ab5 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:dst_hold include/net/dst.h:238 [inline]
RIP: 0010:dst_cache_per_cpu_get+0x29b/0x2b0 net/core/dst_cache.c:50
Code: 26 f8 e9 a6 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 05 ff ff ff 48 89 df e8 00 2b 26 f8 e9 f8 fe ff ff e8 b6 01 bc f7 90 <0f> 0b 90 e9 0c fe ff ff 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90
RSP: 0018:ffffc90000007768 EFLAGS: 00010246
RAX: ffffffff8a07558a RBX: 0000000000000001 RCX: ffff88807e56bc00
RDX: 0000000000000100 RSI: 0000000000000004 RDI: ffff888034a8b640
RBP: ffffc90000007901 R08: ffff888034a8b643 R09: 1ffff110069516c8
R10: dffffc0000000000 R11: ffffed10069516c9 R12: ffff888034a8b640
R13: ffff8881463ba418 R14: ffffe8ffffc6a688 R15: ffff888034a8b600
FS: 00007ff8159186c0(0000) GS:ffff888124f96000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5a018df440 CR3: 000000007e9a0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tipc_udp_xmit+0xc2/0xc00 net/tipc/udp_media.c:178
tipc_udp_send_msg+0x26b/0x3d0 net/tipc/udp_media.c:271
tipc_bearer_xmit_skb+0x306/0x480 net/tipc/bearer.c:575
tipc_disc_timeout+0x612/0x770 net/tipc/discover.c:338
call_timer_fn+0x189/0x650 kernel/time/timer.c:1789
expire_timers kernel/time/timer.c:1840 [inline]
__run_timers kernel/time/timer.c:2414 [inline]
__run_timer_base+0x66e/0x8e0 kernel/time/timer.c:2426
run_timer_base kernel/time/timer.c:2435 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:node_to_entry lib/radix-tree.c:74 [inline]
RIP: 0010:delete_node+0x2ac/0x780 lib/radix-tree.c:552
Code: 90 48 89 ee e8 f5 68 15 f9 e9 40 fe ff ff e8 9b 1c 98 f5 40 b5 01 e9 60 04 00 00 e8 8e 1c 98 f5 4c 89 eb 40 b5 01 4c 8b 34 24 <48> 83 cb 02 4c 89 f8 48 c1 e8 03 48 89 44 24 08 42 80 3c 20 00 74
RSP: 0018:ffffc9000f12ece0 EFLAGS: 00000246
RAX: ffffffff8c2b3869 RBX: ffff8880263ef440 RCX: 0000000000080000
RDX: ffffc9000ca55000 RSI: 0000000000011a55 RDI: 0000000000011a56
RBP: 0000000000000000 R08: ffffffff8c2b3860 R09: 1ffff1100659a0f5
R10: dffffc0000000000 R11: ffffed100659a0f6 R12: dffffc0000000000
R13: ffff8880263ef440 R14: ffff88801bef7050 R15: ffff88801bef7058
radix_tree_delete_item+0x2e6/0x3f0 lib/radix-tree.c:1430
kernfs_put+0x172/0x460 fs/kernfs/dir.c:588
kernfs_remove_by_name_ns+0xb5/0x130 fs/kernfs/dir.c:1715
kernfs_remove_by_name include/linux/kernfs.h:633 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0xfe/0x2c0 fs/sysfs/group.c:322
sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:346
__kobject_del+0x84/0x310 lib/kobject.c:595
kobject_del+0x45/0x60 lib/kobject.c:627
rpc_sysfs_xprt_switch_destroy+0x59/0x90 net/sunrpc/sysfs.c:813
xprt_switch_free net/sunrpc/xprtmultipath.c:194 [inline]
kref_put include/linux/kref.h:65 [inline]
xprt_switch_put+0x33f/0x3c0 net/sunrpc/xprtmultipath.c:221
rpc_free_client net/sunrpc/clnt.c:1009 [inline]
rpc_free_auth net/sunrpc/clnt.c:1033 [inline]
rpc_release_client+0x370/0x6f0 net/sunrpc/clnt.c:1048
rpc_shutdown_client+0x4b7/0x6c0 net/sunrpc/clnt.c:972
nfsd_destroy_serv+0x1eb/0x4b0 fs/nfsd/nfssvc.c:546
nfsd_nl_listener_set_doit+0x17c2/0x1870 fs/nfsd/nfsctl.c:2044
genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0xb38/0xf00 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:727
____sys_sendmsg+0x523/0x860 net/socket.c:2566
___sys_sendmsg net/socket.c:2620 [inline]
__sys_sendmsg+0x271/0x360 net/socket.c:2652
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff814b8d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff815918038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff814da5fa0 RCX: 00007ff814b8d169
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000004
RBP: 00007ff814c0e730 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff814da5fa0 R15: 00007ffdb5c034e8
----------------
Code disassembly (best guess):
0: 90 nop
1: 48 89 ee mov %rbp,%rsi
4: e8 f5 68 15 f9 call 0xf91568fe
9: e9 40 fe ff ff jmp 0xfffffe4e
e: e8 9b 1c 98 f5 call 0xf5981cae
13: 40 b5 01 mov $0x1,%bpl
16: e9 60 04 00 00 jmp 0x47b
1b: e8 8e 1c 98 f5 call 0xf5981cae
20: 4c 89 eb mov %r13,%rbx
23: 40 b5 01 mov $0x1,%bpl
26: 4c 8b 34 24 mov (%rsp),%r14
* 2a: 48 83 cb 02 or $0x2,%rbx <-- trapping instruction
2e: 4c 89 f8 mov %r15,%rax
31: 48 c1 e8 03 shr $0x3,%rax
35: 48 89 44 24 08 mov %rax,0x8(%rsp)
3a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
3f: 74 .byte 0x74