------------[ cut here ]------------ WARNING: CPU: 1 PID: 6696 at net/ipv4/route.c:1281 kfree_skb include/linux/skbuff.h:1118 [inline] WARNING: CPU: 1 PID: 6696 at net/ipv4/route.c:1281 ip_rt_bug+0x30/0x100 net/ipv4/route.c:1280 Modules linked in: CPU: 1 PID: 6696 Comm: syz.2.673 Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ip_rt_bug+0x30/0x100 include/linux/skbuff.h:1118 lr : kfree_skb include/linux/skbuff.h:1118 [inline] lr : ip_rt_bug+0x30/0x100 net/ipv4/route.c:1280 sp : ffff800008017530 x29: ffff800008017530 x28: 1fffe0001b3c9123 x27: ffff800008017800 x26: dfff800000000000 x25: 1fffe0001a499d9b x24: dfff800000000000 x23: ffff0000e79c3900 x22: ffff0000e79c3930 x21: ffff0000d9e48680 x20: ffff0000d24cec80 x19: ffff0000d24cec80 x18: 0000000000000302 x17: 0000000000000000 x16: ffff800011b616c4 x15: ffff8000083bf10c x14: ffff8000083bf46c x13: ffff80000ffde43c x12: 0000000000000003 x11: 0000000000000303 x10: 0000000000000003 x9 : c10064a31b8a6300 x8 : c10064a31b8a6300 x7 : 0000000000000000 x6 : ffff8000083bcc30 x5 : ffff0000c8746400 x4 : 0000000000000000 x3 : ffff8000136d82c0 x2 : 0000000000000002 x1 : ffff800012176280 x0 : 0000000000000001 Call trace: kfree_skb include/linux/skbuff.h:1118 [inline] ip_rt_bug+0x30/0x100 net/ipv4/route.c:1280 dst_output include/net/dst.h:452 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0x134/0x2f8 net/ipv4/ip_output.c:1581 ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1601 icmp_push_reply+0x3ac/0x4dc net/ipv4/icmp.c:396 __icmp_send+0xb8c/0x103c net/ipv4/icmp.c:777 ipv4_send_dest_unreach net/ipv4/route.c:1261 [inline] ipv4_link_failure+0x558/0x8d8 net/ipv4/route.c:1268 dst_link_failure include/net/dst.h:422 [inline] arp_error_report+0x11c/0x16c net/ipv4/arp.c:295 neigh_invalidate+0x2c0/0x514 net/core/neighbour.c:1001 neigh_timer_handler+0x630/0xe1c net/core/neighbour.c:1088 call_timer_fn+0x19c/0x8f0 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x554/0x718 kernel/time/timer.c:1767 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1780 handle_softirqs+0x384/0xdbc kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] invoke_softirq kernel/softirq.c:439 [inline] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 irq_exit+0x14/0x88 kernel/softirq.c:665 handle_domain_irq+0x14c/0x1fc kernel/irq/irqdesc.c:711 gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:765 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899 do_interrupt_handler+0x74/0x94 arch/arm64/kernel/entry-common.c:267 el1_interrupt+0x30/0x58 arch/arm64/kernel/entry-common.c:454 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:470 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:522 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline] finish_lock_switch+0xc4/0x1e8 kernel/sched/core.c:4784 finish_task_switch+0x120/0x6b4 kernel/sched/core.c:4902 context_switch kernel/sched/core.c:5033 [inline] __schedule+0xf14/0x1e48 kernel/sched/core.c:6376 preempt_schedule_irq+0x90/0x274 kernel/sched/core.c:6780 arm64_preempt_schedule_irq+0x174/0x2c4 arch/arm64/kernel/entry-common.c:260 el1_interrupt+0x40/0x58 arch/arm64/kernel/entry-common.c:463 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:470 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:522 hrtimer_nanosleep+0x0/0x384 kernel/time/hrtimer.c:2035 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1313 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1290 [inline] __arm64_sys_clock_nanosleep+0x350/0x38c kernel/time/posix-timers.c:1290 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 18367 hardirqs last enabled at (18366): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (18367): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (18230): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (18263): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (18263): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (18263): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (18263): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 72393525ff61807f ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6696 at net/ipv4/route.c:1281 kfree_skb include/linux/skbuff.h:1118 [inline] WARNING: CPU: 1 PID: 6696 at net/ipv4/route.c:1281 ip_rt_bug+0x30/0x100 net/ipv4/route.c:1280 Modules linked in: CPU: 1 PID: 6696 Comm: syz.2.673 Tainted: G W 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ip_rt_bug+0x30/0x100 include/linux/skbuff.h:1118 lr : kfree_skb include/linux/skbuff.h:1118 [inline] lr : ip_rt_bug+0x30/0x100 net/ipv4/route.c:1280 sp : ffff800008017530 x29: ffff800008017530 x28: 1fffe0001b3c9123 x27: ffff800008017800 x26: dfff800000000000 x25: 1fffe0001a499dc3 x24: dfff800000000000 x23: ffff0000e79c3900 x22: ffff0000e79c3930 x21: ffff0000d9e48680 x20: ffff0000d24cedc0 x19: ffff0000d24cedc0 x18: 0000000000000302 x17: 0000000000000000 x16: ffff800011b616c4 x15: 0000000000000001 x14: 0000000008338344 x13: 0000000055f3bfd7 x12: 0000000000000003 x11: 0000000000000303 x10: 0000000000000003 x9 : c10064a31b8a6300 x8 : c10064a31b8a6300 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff8000136d82c0 x2 : 0000000000000002 x1 : ffff800012176280 x0 : 0000000000000001 Call trace: kfree_skb include/linux/skbuff.h:1118 [inline] ip_rt_bug+0x30/0x100 net/ipv4/route.c:1280 dst_output include/net/dst.h:452 [inline] ip_local_out net/ipv4/ip_output.c:126 [inline] ip_send_skb+0x134/0x2f8 net/ipv4/ip_output.c:1581 ip_push_pending_frames+0x6c/0x88 net/ipv4/ip_output.c:1601 icmp_push_reply+0x3ac/0x4dc net/ipv4/icmp.c:396 __icmp_send+0xb8c/0x103c net/ipv4/icmp.c:777 ipv4_send_dest_unreach net/ipv4/route.c:1261 [inline] ipv4_link_failure+0x558/0x8d8 net/ipv4/route.c:1268 dst_link_failure include/net/dst.h:422 [inline] arp_error_report+0x11c/0x16c net/ipv4/arp.c:295 neigh_invalidate+0x2c0/0x514 net/core/neighbour.c:1001 neigh_timer_handler+0x630/0xe1c net/core/neighbour.c:1088 call_timer_fn+0x19c/0x8f0 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x554/0x718 kernel/time/timer.c:1767 run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1780 handle_softirqs+0x384/0xdbc kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] invoke_softirq kernel/softirq.c:439 [inline] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 irq_exit+0x14/0x88 kernel/softirq.c:665 handle_domain_irq+0x14c/0x1fc kernel/irq/irqdesc.c:711 gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:765 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899 do_interrupt_handler+0x74/0x94 arch/arm64/kernel/entry-common.c:267 el1_interrupt+0x30/0x58 arch/arm64/kernel/entry-common.c:454 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:470 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:522 arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline] finish_lock_switch+0xc4/0x1e8 kernel/sched/core.c:4784 finish_task_switch+0x120/0x6b4 kernel/sched/core.c:4902 context_switch kernel/sched/core.c:5033 [inline] __schedule+0xf14/0x1e48 kernel/sched/core.c:6376 preempt_schedule_irq+0x90/0x274 kernel/sched/core.c:6780 arm64_preempt_schedule_irq+0x174/0x2c4 arch/arm64/kernel/entry-common.c:260 el1_interrupt+0x40/0x58 arch/arm64/kernel/entry-common.c:463 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:470 el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:522 hrtimer_nanosleep+0x0/0x384 kernel/time/hrtimer.c:2035 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1313 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1290 [inline] __arm64_sys_clock_nanosleep+0x350/0x38c kernel/time/posix-timers.c:1290 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 18449 hardirqs last enabled at (18448): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (18449): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (18230): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (18263): [] __do_softirq kernel/softirq.c:592 [inline] softirqs last disabled at (18263): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (18263): [] invoke_softirq kernel/softirq.c:439 [inline] softirqs last disabled at (18263): [] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641 ---[ end trace 72393525ff618080 ]---