watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz.0.24:4506]
Modules linked in:
irq event stamp: 6573
hardirqs last  enabled at (6572): [<ffff800011b9f848>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (6572): [<ffff800011b9f848>] exit_to_kernel_mode+0xcc/0xfc arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (6573): [<ffff800011b9d900>] __el1_irq arch/arm64/kernel/entry-common.c:468 [inline]
hardirqs last disabled at (6573): [<ffff800011b9d900>] el1_interrupt+0x24/0x54 arch/arm64/kernel/entry-common.c:486
softirqs last  enabled at (1460): [<ffff8000108d0df8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (1460): [<ffff8000108d0df8>] xfrm_find_acq+0x98/0xc0 net/xfrm/xfrm_state.c:1909
softirqs last disabled at (1462): [<ffff8000108d18b0>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (1462): [<ffff8000108d18b0>] xfrm_alloc_spi+0xac/0xb10 net/xfrm/xfrm_state.c:2117
CPU: 1 PID: 4506 Comm: syz.0.24 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __sanitizer_cov_trace_pc+0x8c/0x90 kernel/kcov.c:230
lr : xfrm_state_lookup_spi_proto net/xfrm/xfrm_state.c:1314 [inline]
lr : xfrm_alloc_spi+0x4ac/0xb10 net/xfrm/xfrm_state.c:2132
sp : ffff8000220971a0
x29: ffff800022097280 x28: 0000000000000033 x27: 0000000003000000
x26: ffff0000dd834400 x25: 0000000000000004 x24: ffff0000dd834000
x23: dfff800000000000 x22: ffff700004412e44 x21: ffff800018db3000
x20: 0000000000000003 x19: ffff0000dd834028 x18: 0000000000000000
x17: 00000000ffff0000 x16: ffff800011ba16d0 x15: 0000000000000000
x14: 1ffff00002c7c073 x13: dfff800000000000 x12: 00000000cc1889a7
x11: ff008000108d1cb0 x10: 0000000000000000 x9 : ffff8000108d1cb0
x8 : ffff0000e0aad400 x7 : ffff8000108d8ac0 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002
x2 : 0000000000000008 x1 : 0000000003000000 x0 : 0000000001000000
Call trace:
 __sanitizer_cov_trace_pc+0x8c/0x90 kernel/kcov.c:230
 xfrm_alloc_userspi+0x498/0x914 net/xfrm/xfrm_user.c:1606
 xfrm_user_rcv_msg+0x500/0x7b8 net/xfrm/xfrm_user.c:3119
 netlink_rcv_skb+0x220/0x3ec net/netlink/af_netlink.c:2516
 xfrm_netlink_rcv+0x80/0x9c net/xfrm/xfrm_user.c:3141
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x5fc/0x80c net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x6f0/0x9d8 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x588/0x90c net/socket.c:2519
 ___sys_sendmsg net/socket.c:2573 [inline]
 __sys_sendmsg+0x288/0x374 net/socket.c:2602
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg net/socket.c:2609 [inline]
 __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2609
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589