------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 1 PID: 0 at lib/refcount.c:25 refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.15.0-syzkaller-12293-g7fdaba912981 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25 lr : refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25 sp : ffff800080017700 x29: ffff800080017700 x28: ffff0000cd222500 x27: ffff0000d4298408 x26: ffff0000c519fb40 x25: dfff800000000000 x24: 1fffe0001a853081 x23: ffff0000d5e20c00 x22: ffff0000d0ebbcec x21: ffff0000d8424808 x20: ffff0000d0ebbcec x19: ffff80008ff8d000 x18: 1fffe00033e71876 x17: 0000000000000000 x16: ffff800089c33048 x15: ffff700011ad9ce8 x14: 1ffff00011ad9ce8 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700011ad9ce8 x10: 0000000000ff0100 x9 : b02cc629a4f53600 x8 : b02cc629a4f53600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080017078 x4 : ffff80008d7445a0 x3 : ffff800080509c54 x2 : 0000000000000000 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: refcount_warn_saturate+0x134/0x1f8 lib/refcount.c:25 (P) __refcount_add include/linux/refcount.h:-1 [inline] __refcount_inc include/linux/refcount.h:366 [inline] refcount_inc include/linux/refcount.h:383 [inline] get_net include/net/net_namespace.h:268 [inline] tipc_aead_encrypt net/tipc/crypto.c:821 [inline] tipc_crypto_xmit+0x14f8/0x1fe0 net/tipc/crypto.c:1761 tipc_crypto_clone_msg+0x98/0x150 net/tipc/crypto.c:1656 tipc_crypto_xmit+0x1664/0x1fe0 net/tipc/crypto.c:1717 tipc_bearer_xmit_skb+0x1f0/0x388 net/tipc/bearer.c:572 tipc_disc_timeout+0x4c8/0x608 net/tipc/discover.c:338 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x51c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __el1_irq arch/arm64/kernel/entry-common.c:584 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:598 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:603 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 (P) cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x1d8/0x454 kernel/sched/idle.c:325 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:423 secondary_start_kernel+0x194/0x1bc arch/arm64/kernel/smp.c:279 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:401 irq event stamp: 574129 hardirqs last enabled at (574128): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (574128): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (574129): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (574084): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (574084): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (574097): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 1 PID: 0 at lib/refcount.c:28 refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G W 6.15.0-syzkaller-12293-g7fdaba912981 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28 lr : refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28 sp : ffff800080017700 x29: ffff800080017700 x28: ffff0000cd222500 x27: 0000000000000000 x26: ffff0000c519fb40 x25: dfff800000000000 x24: 1fffe00018a33f72 x23: 1fffe000181527a1 x22: ffff0000d4298400 x21: 00000000c0000000 x20: ffff0000d0ebbcec x19: ffff80008ff8d000 x18: 1fffe00033e71876 x17: 0000000000000000 x16: ffff800089c33048 x15: ffff700011ad9ce8 x14: 1ffff00011ad9ce8 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700011ad9ce8 x10: 0000000000ff0100 x9 : b02cc629a4f53600 x8 : b02cc629a4f53600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080017078 x4 : ffff80008d7445a0 x3 : ffff800080509c54 x2 : 0000000000000000 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: refcount_warn_saturate+0x154/0x1f8 lib/refcount.c:28 (P) __refcount_sub_and_test include/linux/refcount.h:400 [inline] __refcount_dec_and_test include/linux/refcount.h:432 [inline] refcount_dec_and_test include/linux/refcount.h:450 [inline] put_net include/net/net_namespace.h:287 [inline] tipc_aead_encrypt net/tipc/crypto.c:829 [inline] tipc_crypto_xmit+0x1644/0x1fe0 net/tipc/crypto.c:1761 tipc_crypto_clone_msg+0x98/0x150 net/tipc/crypto.c:1656 tipc_crypto_xmit+0x1664/0x1fe0 net/tipc/crypto.c:1717 tipc_bearer_xmit_skb+0x1f0/0x388 net/tipc/bearer.c:572 tipc_disc_timeout+0x4c8/0x608 net/tipc/discover.c:338 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x51c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __el1_irq arch/arm64/kernel/entry-common.c:584 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:598 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:603 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 (P) cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x1d8/0x454 kernel/sched/idle.c:325 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:423 secondary_start_kernel+0x194/0x1bc arch/arm64/kernel/smp.c:279 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:401 irq event stamp: 574159 hardirqs last enabled at (574158): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (574158): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (574159): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (574084): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (574084): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (574097): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ refcount_t: saturated; leaking memory. WARNING: CPU: 1 PID: 0 at lib/refcount.c:22 refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G W 6.15.0-syzkaller-12293-g7fdaba912981 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22 lr : refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22 sp : ffff8000800178c0 x29: ffff8000800178c0 x28: ffff0000cd222a00 x27: ffff0000d48d3e08 x26: ffff0000df879270 x25: dfff800000000000 x24: 1fffe0001a91a7c1 x23: ffff0000d5e20c00 x22: ffff0000d0ebbcec x21: 000000007ffffffe x20: ffff0000d0ebbcec x19: ffff80008ff8d000 x18: 1fffe00033e71876 x17: 0000000000000000 x16: ffff800089c33048 x15: ffff700011ad9ce8 x14: 1ffff00011ad9ce8 x13: 0000000000000004 x12: ffffffffffffffff x11: ffff700011ad9ce8 x10: 0000000000ff0100 x9 : b02cc629a4f53600 x8 : b02cc629a4f53600 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800080017238 x4 : ffff80008d7445a0 x3 : ffff800080509c54 x2 : 0000000000000000 x1 : 0000000000000101 x0 : 0000000000000000 Call trace: refcount_warn_saturate+0x1b4/0x1f8 lib/refcount.c:22 (P) __refcount_add include/linux/refcount.h:-1 [inline] __refcount_inc include/linux/refcount.h:366 [inline] refcount_inc include/linux/refcount.h:383 [inline] get_net include/net/net_namespace.h:268 [inline] tipc_aead_encrypt net/tipc/crypto.c:821 [inline] tipc_crypto_xmit+0x14f8/0x1fe0 net/tipc/crypto.c:1761 tipc_bearer_xmit_skb+0x1f0/0x388 net/tipc/bearer.c:572 tipc_disc_timeout+0x4c8/0x608 net/tipc/discover.c:338 call_timer_fn+0x1b4/0x818 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x51c/0x76c kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xcc/0x194 kernel/time/timer.c:2403 handle_softirqs+0x328/0xc88 kernel/softirq.c:579 __do_softirq+0x14/0x20 kernel/softirq.c:613 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81 call_on_irq_stack+0x24/0x30 arch/arm64/kernel/entry.S:891 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86 invoke_softirq kernel/softirq.c:460 [inline] __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:680 irq_exit_rcu+0x14/0x84 kernel/softirq.c:696 __el1_irq arch/arm64/kernel/entry-common.c:584 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:598 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:603 el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:596 __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:26 [inline] (P) arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:48 (P) cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x1d8/0x454 kernel/sched/idle.c:325 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:423 secondary_start_kernel+0x194/0x1bc arch/arm64/kernel/smp.c:279 __secondary_switched+0xc0/0xc4 arch/arm64/kernel/head.S:401 irq event stamp: 574207 hardirqs last enabled at (574206): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (574206): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (574207): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (574084): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (574084): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (574097): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---