watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz.2.2927:13639]
Modules linked in:
irq event stamp: 46688
hardirqs last  enabled at (46687): [<ffff80008b808658>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
hardirqs last  enabled at (46687): [<ffff80008b808658>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95
hardirqs last disabled at (46688): [<ffff80008b8060d0>] __el1_irq arch/arm64/kernel/entry-common.c:557 [inline]
hardirqs last disabled at (46688): [<ffff80008b8060d0>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:575
softirqs last  enabled at (46686): [<ffff800080312be0>] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last  enabled at (46686): [<ffff800080312be0>] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589
softirqs last disabled at (46659): [<ffff800080020dbc>] __do_softirq+0x14/0x20 kernel/softirq.c:595
CPU: 0 UID: 0 PID: 13639 Comm: syz.2.2927 Not tainted 6.14.0-rc2-syzkaller-ga64dcfb451e2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:340 [inline]
pc : smp_call_function_single+0x394/0x1938 kernel/smp.c:679
lr : csd_lock_wait kernel/smp.c:340 [inline]
lr : smp_call_function_single+0x3ac/0x1938 kernel/smp.c:679
sp : ffff80009c316c60
x29: ffff80009c316db0 x28: ffff80009c316d50 x27: ffff80009c316d58
x26: ffff80009c316d4e x25: dfff800000000000 x24: 0000000000000000
x23: 0000000000000000 x22: 0000000000000001 x21: 0000000000000011
x20: ffff0000c82d5b88 x19: ffff80009c316d48 x18: ffff0000dbdc2240
x17: ffff80008fbcd000 x16: ffff8000832d649c x15: 0000000000000001
x14: 1ffff00013862da9 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000007ffff x9 : 0000000000000000
x8 : 0000000000000011 x7 : 0000000000000011 x6 : 0000000000000000
x5 : ffff80009c316d60 x4 : ffff80008f12bf40 x3 : ffff8000805eae78
x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001
Call trace:
 __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:231 [inline] (P)
 __cmpwait arch/arm64/include/asm/cmpxchg.h:257 [inline] (P)
 csd_lock_wait kernel/smp.c:340 [inline] (P)
 smp_call_function_single+0x394/0x1938 kernel/smp.c:679 (P)
 rcu_barrier+0x310/0x534 kernel/rcu/tree.c:3793
 netdev_wait_allrefs_any net/core/dev.c:11054 [inline]
 netdev_run_todo+0x89c/0xe74 net/core/dev.c:11147
 rtnl_unlock net/core/rtnetlink.c:151 [inline]
 rtnl_net_unlock include/linux/rtnetlink.h:134 [inline]
 rtnl_dellink+0x61c/0x77c net/core/rtnetlink.c:3535
 rtnetlink_rcv_msg+0x670/0xa9c net/core/rtnetlink.c:6911
 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2543
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6938
 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
 netlink_unicast+0x668/0x8a4 net/netlink/af_netlink.c:1348
 netlink_sendmsg+0x7a4/0xa8c net/netlink/af_netlink.c:1892
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:733 [inline]
 ____sys_sendmsg+0x56c/0x840 net/socket.c:2573
 ___sys_sendmsg net/socket.c:2627 [inline]
 __sys_sendmsg+0x238/0x304 net/socket.c:2659
 __do_sys_sendmsg net/socket.c:2664 [inline]
 __se_sys_sendmsg net/socket.c:2662 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2662
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Sending NMI from CPU 0 to CPUs 1: