------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 0 PID: 5429 at lib/refcount.c:25 refcount_warn_saturate+0x180/0x1c8 lib/refcount.c:25 Modules linked in: CPU: 0 PID: 5429 Comm: syz-executor.0 Not tainted 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x180/0x1c8 lib/refcount.c:25 lr : refcount_warn_saturate+0x180/0x1c8 lib/refcount.c:25 sp : ffff800014133ae0 x29: ffff800014133ae0 x28: 00000000002e0003 x27: 00000000000008a0 x26: ffff000118cd2138 x25: 0000000000000000 x24: ffff0000cade6280 x23: ffff80000b2901b0 x22: 0000000000000000 x21: ffff0000cade61c0 x20: 0000000000000002 x19: ffff80000daff000 x18: 00000000000000c0 x17: ffff80000df48158 x16: ffff80000dd86118 x15: ffff000117ca1a00 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff000117ca1a00 x11: ff808000081cbbc8 x10: 0000000000000000 x9 : de3b19efd5b61b00 x8 : de3b19efd5b61b00 x7 : ffff80000c11ee8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 000000000000002a Call trace: refcount_warn_saturate+0x180/0x1c8 lib/refcount.c:25 __refcount_inc include/linux/refcount.h:250 [inline] refcount_inc include/linux/refcount.h:267 [inline] sock_hold include/net/sock.h:775 [inline] nr_release+0x218/0x274 net/netrom/af_netrom.c:520 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2b8/0xc2c kernel/exit.c:867 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1081 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 98378 hardirqs last enabled at (98377): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:344 hardirqs last disabled at (98378): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (96748): [] sock_orphan include/net/sock.h:2098 [inline] softirqs last enabled at (96748): [] netlink_release+0x68/0x518 net/netlink/af_netlink.c:757 softirqs last disabled at (96746): [] sock_orphan include/net/sock.h:2094 [inline] softirqs last disabled at (96746): [] netlink_release+0x4c/0x518 net/netlink/af_netlink.c:757 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object: 00000000358bf695 object type: timer_list hint: nr_t1timer_expiry+0x0/0x1e0 net/netrom/nr_timer.c:46 WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_print_object lib/debugobjects.c:509 [inline] WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 Modules linked in: CPU: 0 PID: 5429 Comm: syz-executor.0 Tainted: G W 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:509 [inline] pc : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 lr : debug_print_object lib/debugobjects.c:509 [inline] lr : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 sp : ffff8000141339e0 x29: ffff8000141339e0 x28: 00000000002e0003 x27: 00000000000008a0 x26: ffff000118cd2138 x25: 0000000000000000 x24: ffff0000cade6280 x23: ffff80000f226590 x22: ffff80000d51c000 x21: ffff80000f2e4000 x20: ffff80000c15f8a0 x19: ffff00011454f570 x18: 00000000000000c0 x17: ffff80000df48158 x16: ffff80000dd86118 x15: ffff000117ca1a00 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff000117ca1a00 x11: ff808000081cbbc8 x10: 0000000000000000 x9 : de3b19efd5b61b00 x8 : de3b19efd5b61b00 x7 : ffff80000c11ee8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000085 Call trace: debug_print_object lib/debugobjects.c:509 [inline] debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 debug_timer_assert_init kernel/time/timer.c:792 [inline] debug_assert_init kernel/time/timer.c:837 [inline] __timer_delete+0x3c/0x1cc kernel/time/timer.c:1321 timer_delete+0x24/0x34 kernel/time/timer.c:1361 del_timer include/linux/timer.h:213 [inline] sk_stop_timer+0x24/0xb4 net/core/sock.c:3370 nr_stop_t1timer+0x24/0x34 net/netrom/nr_timer.c:84 nr_disconnect+0x24/0xc0 net/netrom/nr_subr.c:261 nr_release+0x178/0x274 net/netrom/af_netrom.c:529 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2b8/0xc2c kernel/exit.c:867 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1081 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 98668 hardirqs last enabled at (98667): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:344 hardirqs last disabled at (98668): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (98644): [] spin_unlock_bh include/linux/spinlock.h:395 [inline] softirqs last enabled at (98644): [] lock_sock_nested+0xc0/0xd8 net/core/sock.c:3477 softirqs last disabled at (98642): [] spin_lock_bh include/linux/spinlock.h:355 [inline] softirqs last disabled at (98642): [] lock_sock_nested+0x88/0xd8 net/core/sock.c:3473 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object: 00000000682a540f object type: timer_list hint: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000682a540f object type: timer_list hint: atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000682a540f object type: timer_list hint: __refcount_sub_and_test include/linux/refcount.h:272 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000682a540f object type: timer_list hint: __refcount_dec_and_test include/linux/refcount.h:315 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000682a540f object type: timer_list hint: refcount_dec_and_test include/linux/refcount.h:333 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000682a540f object type: timer_list hint: sock_put include/net/sock.h:1990 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000682a540f object type: timer_list hint: nr_t2timer_expiry+0x0/0x104 net/netrom/nr_timer.c:246 WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_print_object lib/debugobjects.c:509 [inline] WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 Modules linked in: CPU: 0 PID: 5429 Comm: syz-executor.0 Tainted: G W 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:509 [inline] pc : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 lr : debug_print_object lib/debugobjects.c:509 [inline] lr : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 sp : ffff8000141339e0 x29: ffff8000141339e0 x28: 00000000002e0003 x27: 00000000000008a0 x26: ffff000118cd2138 x25: 0000000000000000 x24: ffff0000cade6280 x23: ffff80000f226590 x22: ffff80000d51c000 x21: ffff80000f2e4000 x20: ffff80000c15f8a0 x19: ffff00011454f5c0 x18: 00000000000000c0 x17: ffff80000df48158 x16: ffff80000dd86118 x15: ffff000117ca1a00 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff000117ca1a00 x11: ff808000081cbbc8 x10: 0000000000000000 x9 : de3b19efd5b61b00 x8 : de3b19efd5b61b00 x7 : ffff80000c11ee8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefbff08 x1 : 0000000100000000 x0 : 0000000000000085 Call trace: debug_print_object lib/debugobjects.c:509 [inline] debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 debug_timer_assert_init kernel/time/timer.c:792 [inline] debug_assert_init kernel/time/timer.c:837 [inline] __timer_delete+0x3c/0x1cc kernel/time/timer.c:1321 timer_delete+0x24/0x34 kernel/time/timer.c:1361 del_timer include/linux/timer.h:213 [inline] sk_stop_timer+0x24/0xb4 net/core/sock.c:3370 nr_stop_t2timer+0x24/0x34 net/netrom/nr_timer.c:89 nr_disconnect+0x2c/0xc0 net/netrom/nr_subr.c:262 nr_release+0x178/0x274 net/netrom/af_netrom.c:529 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2b8/0xc2c kernel/exit.c:867 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1081 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 98906 hardirqs last enabled at (98905): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:344 hardirqs last disabled at (98906): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (98876): [] _stext+0x2e4/0x37c softirqs last disabled at (98671): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object: 000000005701d746 object type: timer_list hint: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] ODEBUG: assert_init not available (active state 0) object: 000000005701d746 object type: timer_list hint: atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] ODEBUG: assert_init not available (active state 0) object: 000000005701d746 object type: timer_list hint: __refcount_sub_and_test include/linux/refcount.h:272 [inline] ODEBUG: assert_init not available (active state 0) object: 000000005701d746 object type: timer_list hint: __refcount_dec_and_test include/linux/refcount.h:315 [inline] ODEBUG: assert_init not available (active state 0) object: 000000005701d746 object type: timer_list hint: refcount_dec_and_test include/linux/refcount.h:333 [inline] ODEBUG: assert_init not available (active state 0) object: 000000005701d746 object type: timer_list hint: sock_put include/net/sock.h:1990 [inline] ODEBUG: assert_init not available (active state 0) object: 000000005701d746 object type: timer_list hint: nr_t4timer_expiry+0x0/0xe0 net/netrom/nr_timer.c:162 WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_print_object lib/debugobjects.c:509 [inline] WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 Modules linked in: CPU: 0 PID: 5429 Comm: syz-executor.0 Tainted: G W 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:509 [inline] pc : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 lr : debug_print_object lib/debugobjects.c:509 [inline] lr : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 sp : ffff8000141339e0 x29: ffff8000141339e0 x28: 00000000002e0003 x27: 00000000000008a0 x26: ffff000118cd2138 x25: 0000000000000000 x24: ffff0000cade6280 x23: ffff80000f226590 x22: ffff80000d51c000 x21: ffff80000f2e4000 x20: ffff80000c15f8a0 x19: ffff00011454f610 x18: 00000000000000c0 x17: ffff80000df48158 x16: ffff80000dd86118 x15: ffff000117ca1a00 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff000117ca1a00 x11: ff808000081cbbc8 x10: 0000000000000000 x9 : de3b19efd5b61b00 x8 : de3b19efd5b61b00 x7 : ffff80000c11ee8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000084 Call trace: debug_print_object lib/debugobjects.c:509 [inline] debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 debug_timer_assert_init kernel/time/timer.c:792 [inline] debug_assert_init kernel/time/timer.c:837 [inline] __timer_delete+0x3c/0x1cc kernel/time/timer.c:1321 timer_delete+0x24/0x34 kernel/time/timer.c:1361 del_timer include/linux/timer.h:213 [inline] sk_stop_timer+0x24/0xb4 net/core/sock.c:3370 nr_stop_t4timer+0x24/0x34 net/netrom/nr_timer.c:94 nr_disconnect+0x34/0xc0 net/netrom/nr_subr.c:263 nr_release+0x178/0x274 net/netrom/af_netrom.c:529 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2b8/0xc2c kernel/exit.c:867 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1081 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 99420 hardirqs last enabled at (99419): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:344 hardirqs last disabled at (99420): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (99414): [] _stext+0x2e4/0x37c softirqs last disabled at (99135): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object: 000000002a197aaa object type: timer_list hint: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] ODEBUG: assert_init not available (active state 0) object: 000000002a197aaa object type: timer_list hint: atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] ODEBUG: assert_init not available (active state 0) object: 000000002a197aaa object type: timer_list hint: __refcount_sub_and_test include/linux/refcount.h:272 [inline] ODEBUG: assert_init not available (active state 0) object: 000000002a197aaa object type: timer_list hint: __refcount_dec_and_test include/linux/refcount.h:315 [inline] ODEBUG: assert_init not available (active state 0) object: 000000002a197aaa object type: timer_list hint: refcount_dec_and_test include/linux/refcount.h:333 [inline] ODEBUG: assert_init not available (active state 0) object: 000000002a197aaa object type: timer_list hint: sock_put include/net/sock.h:1990 [inline] ODEBUG: assert_init not available (active state 0) object: 000000002a197aaa object type: timer_list hint: nr_idletimer_expiry+0x0/0x194 net/netrom/nr_timer.c:173 WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_print_object lib/debugobjects.c:509 [inline] WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 Modules linked in: CPU: 0 PID: 5429 Comm: syz-executor.0 Tainted: G W 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:509 [inline] pc : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 lr : debug_print_object lib/debugobjects.c:509 [inline] lr : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 sp : ffff8000141339e0 x29: ffff8000141339e0 x28: 00000000002e0003 x27: 00000000000008a0 x26: ffff000118cd2138 x25: 0000000000000000 x24: ffff0000cade6280 x23: ffff80000f226590 x22: ffff80000d51c000 x21: ffff80000f2e4000 x20: ffff80000c15f8a0 x19: ffff00011454f660 x18: 00000000000000c0 x17: ffff80000df48158 x16: ffff80000dd86118 x15: ffff000117ca1a00 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff000117ca1a00 x11: ff808000081cbbc8 x10: 0000000000000000 x9 : de3b19efd5b61b00 x8 : de3b19efd5b61b00 x7 : ffff80000c11ee8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefbff08 x1 : 0000000100000000 x0 : 0000000000000087 Call trace: debug_print_object lib/debugobjects.c:509 [inline] debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 debug_timer_assert_init kernel/time/timer.c:792 [inline] debug_assert_init kernel/time/timer.c:837 [inline] __timer_delete+0x3c/0x1cc kernel/time/timer.c:1321 timer_delete+0x24/0x34 kernel/time/timer.c:1361 del_timer include/linux/timer.h:213 [inline] sk_stop_timer+0x24/0xb4 net/core/sock.c:3370 nr_stop_idletimer+0x24/0x34 net/netrom/nr_timer.c:99 nr_disconnect+0x3c/0xc0 net/netrom/nr_subr.c:264 nr_release+0x178/0x274 net/netrom/af_netrom.c:529 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2b8/0xc2c kernel/exit.c:867 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1081 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 99510 hardirqs last enabled at (99509): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:344 hardirqs last disabled at (99510): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (99494): [] _stext+0x2e4/0x37c softirqs last disabled at (99479): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object: 00000000f145e5f2 object type: timer_list hint: arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000f145e5f2 object type: timer_list hint: atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:177 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000f145e5f2 object type: timer_list hint: __refcount_sub_and_test include/linux/refcount.h:272 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000f145e5f2 object type: timer_list hint: __refcount_dec_and_test include/linux/refcount.h:315 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000f145e5f2 object type: timer_list hint: refcount_dec_and_test include/linux/refcount.h:333 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000f145e5f2 object type: timer_list hint: sock_put include/net/sock.h:1990 [inline] ODEBUG: assert_init not available (active state 0) object: 00000000f145e5f2 object type: timer_list hint: nr_heartbeat_expiry+0x0/0x1f4 net/netrom/nr_timer.c:202 WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_print_object lib/debugobjects.c:509 [inline] WARNING: CPU: 0 PID: 5429 at lib/debugobjects.c:512 debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 Modules linked in: CPU: 0 PID: 5429 Comm: syz-executor.0 Tainted: G W 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:509 [inline] pc : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 lr : debug_print_object lib/debugobjects.c:509 [inline] lr : debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 sp : ffff8000141339d0 x29: ffff8000141339d0 x28: 00000000002e0003 x27: 00000000000008a0 x26: ffff000118cd2138 x25: 0000000000000000 x24: ffff0000cade6280 x23: ffff80000f226590 x22: ffff80000d51c000 x21: ffff80000f2e4000 x20: ffff80000c15f8a0 x19: ffff00011454f2f8 x18: 00000000000000c0 x17: ffff80000df48158 x16: ffff80000dd86118 x15: ffff000117ca1a00 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff000117ca1a00 x11: ff808000081cbbc8 x10: 0000000000000000 x9 : de3b19efd5b61b00 x8 : de3b19efd5b61b00 x7 : ffff80000c11ee8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000087 Call trace: debug_print_object lib/debugobjects.c:509 [inline] debug_object_assert_init+0x148/0x19c lib/debugobjects.c:899 debug_timer_assert_init kernel/time/timer.c:792 [inline] debug_assert_init kernel/time/timer.c:837 [inline] __timer_delete+0x3c/0x1cc kernel/time/timer.c:1321 timer_delete+0x24/0x34 kernel/time/timer.c:1361 del_timer include/linux/timer.h:213 [inline] sk_stop_timer+0x24/0xb4 net/core/sock.c:3370 nr_stop_heartbeat+0x24/0x34 net/netrom/nr_timer.c:104 nr_destroy_socket+0xb4/0x298 net/netrom/af_netrom.c:263 nr_release+0x180/0x274 net/netrom/af_netrom.c:530 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2b8/0xc2c kernel/exit.c:867 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1081 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 100298 hardirqs last enabled at (100297): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:344 hardirqs last disabled at (100298): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (100274): [] spin_unlock_bh include/linux/spinlock.h:395 [inline] softirqs last enabled at (100274): [] nr_remove_socket net/netrom/af_netrom.c:95 [inline] softirqs last enabled at (100274): [] nr_destroy_socket+0xac/0x298 net/netrom/af_netrom.c:261 softirqs last disabled at (100272): [] spin_lock_bh include/linux/spinlock.h:355 [inline] softirqs last disabled at (100272): [] nr_remove_socket net/netrom/af_netrom.c:93 [inline] softirqs last disabled at (100272): [] nr_destroy_socket+0x28/0x298 net/netrom/af_netrom.c:261 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 0 PID: 5429 at lib/refcount.c:28 refcount_warn_saturate+0x1a0/0x1c8 lib/refcount.c:28 Modules linked in: CPU: 0 PID: 5429 Comm: syz-executor.0 Tainted: G W 6.2.0-rc3-syzkaller-16387-g9598c377d828 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : refcount_warn_saturate+0x1a0/0x1c8 lib/refcount.c:28 lr : refcount_warn_saturate+0x1a0/0x1c8 lib/refcount.c:28 sp : ffff800014133ae0 x29: ffff800014133ae0 x28: 00000000002e0003 x27: 00000000000008a0 x26: ffff000118cd2138 x25: 0000000000000000 x24: ffff0000cade6280 x23: ffff80000b2901b0 x22: 0000000000000000 x21: 00000000c0000000 x20: 0000000000000003 x19: ffff80000daff000 x18: 00000000000000c0 x17: ffff80000df48158 x16: ffff80000dd86118 x15: ffff000117ca1a00 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff000117ca1a00 x11: ff808000081cbbc8 x10: 0000000000000000 x9 : de3b19efd5b61b00 x8 : de3b19efd5b61b00 x7 : ffff80000c11ee8c x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefbff08 x1 : 0000000100000000 x0 : 0000000000000026 Call trace: refcount_warn_saturate+0x1a0/0x1c8 lib/refcount.c:28 __refcount_sub_and_test include/linux/refcount.h:283 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] sock_put include/net/sock.h:1990 [inline] nr_release+0x22c/0x274 net/netrom/af_netrom.c:554 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2b8/0xc2c kernel/exit.c:867 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1081 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 100580 hardirqs last enabled at (100579): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:344 hardirqs last disabled at (100580): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (100558): [] spin_unlock_bh include/linux/spinlock.h:395 [inline] softirqs last enabled at (100558): [] release_sock+0xf4/0x108 net/core/sock.c:3496 softirqs last disabled at (100556): [] spin_lock_bh include/linux/spinlock.h:355 [inline] softirqs last disabled at (100556): [] release_sock+0x2c/0x108 net/core/sock.c:3483 ---[ end trace 0000000000000000 ]---