openvswitch: netlink: IP tunnel attribute has 3052 unknown bytes. FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 0 ====================================================== WARNING: possible circular locking dependency detected 6.12.0-rc7-syzkaller-g9f8e716d46c6 #0 Not tainted ------------------------------------------------------ syz.3.692/8213 is trying to acquire lock: ffffffff8e813320 (console_owner){-...}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:342 [inline] ffffffff8e813320 (console_owner){-...}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:267 [inline] ffffffff8e813320 (console_owner){-...}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline] ffffffff8e813320 (console_owner){-...}-{0:0}, at: console_flush_all+0x1a3/0xeb0 kernel/printk/printk.c:3157 but task is already holding lock: ffff8880b863ea98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&rq->__lock){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 raw_spin_rq_lock kernel/sched/sched.h:1506 [inline] task_rq_lock+0xc6/0x360 kernel/sched/core.c:700 cgroup_move_task+0x9b/0x5a0 kernel/sched/psi.c:1161 css_set_move_task+0x72e/0x950 kernel/cgroup/cgroup.c:898 cgroup_post_fork+0x256/0x880 kernel/cgroup/cgroup.c:6692 copy_process+0x39e9/0x3d50 kernel/fork.c:2600 kernel_clone+0x226/0x8f0 kernel/fork.c:2786 user_mode_thread+0x132/0x1a0 kernel/fork.c:2864 rest_init+0x23/0x300 init/main.c:712 start_kernel+0x47f/0x500 init/main.c:1105 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 -> #3 (&p->pi_lock){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline] try_to_wake_up+0xbe/0x14b0 kernel/sched/core.c:4165 __wake_up_common kernel/sched/wait.c:89 [inline] __wake_up_common_lock+0x130/0x1e0 kernel/sched/wait.c:106 tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69 serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1821 serial8250_handle_irq+0x630/0xb80 drivers/tty/serial/8250/8250_port.c:1929 serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1949 serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:86 __handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285 common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline] arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline] acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702 cpuidle_enter_state+0x109/0x470 drivers/cpuidle/cpuidle.c:264 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:385 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:230 [inline] do_idle+0x375/0x5d0 kernel/sched/idle.c:326 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424 rest_init+0x2dc/0x300 init/main.c:747 start_kernel+0x47f/0x500 init/main.c:1105 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 -> #2 (&tty->write_wait){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105 tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69 serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1821 serial8250_handle_irq+0x630/0xb80 drivers/tty/serial/8250/8250_port.c:1929 serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1949 serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:86 __handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210 handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:247 [inline] call_irq_handler arch/x86/kernel/irq.c:259 [inline] __common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285 common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] uart_port_unlock_irqrestore include/linux/serial_core.h:782 [inline] uart_write+0x3e4/0xa40 drivers/tty/serial/serial_core.c:636 process_output_block drivers/tty/n_tty.c:574 [inline] n_tty_write+0xd62/0x1230 drivers/tty/n_tty.c:2389 iterate_tty_write drivers/tty/tty_io.c:1015 [inline] file_tty_write+0x546/0x9b0 drivers/tty/tty_io.c:1090 new_sync_write fs/read_write.c:590 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:683 ksys_write+0x183/0x2b0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&port_lock_key){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 uart_port_lock_irqsave include/linux/serial_core.h:711 [inline] serial8250_console_write+0x1a7/0x1ed0 drivers/tty/serial/8250/8250_port.c:3352 console_emit_next_record kernel/printk/printk.c:3092 [inline] console_flush_all+0x86b/0xeb0 kernel/printk/printk.c:3180 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3279 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2407 _printk+0xd5/0x120 kernel/printk/printk.c:2432 register_console+0xbf5/0xfd0 kernel/printk/printk.c:4069 univ8250_console_init+0x52/0x90 drivers/tty/serial/8250/8250_core.c:513 console_init+0x1b8/0x6f0 kernel/printk/printk.c:4262 start_kernel+0x2d8/0x500 init/main.c:1040 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 -> #0 (console_owner){-...}-{0:0}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 console_lock_spinning_enable kernel/printk/printk.c:1905 [inline] console_emit_next_record kernel/printk/printk.c:3086 [inline] console_flush_all+0x7f8/0xeb0 kernel/printk/printk.c:3180 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3279 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2407 _printk+0xd5/0x120 kernel/printk/printk.c:2432 fail_dump lib/fault-inject.c:46 [inline] should_fail_ex+0x391/0x4e0 lib/fault-inject.c:154 strncpy_from_user+0x36/0x260 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:310 [inline] bpf_probe_read_compat_str+0xe9/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_c1796171ffc7efef+0x3e/0x40 bpf_dispatcher_nop_func include/linux/bpf.h:1265 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2316 [inline] bpf_trace_run4+0x334/0x590 kernel/trace/bpf_trace.c:2359 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x22bb/0x4c30 kernel/sched/core.c:6690 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7015 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 instrument_atomic_read include/linux/instrumented.h:68 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] rht_grow_above_75 include/linux/rhashtable.h:186 [inline] __rhashtable_insert_fast include/linux/rhashtable.h:799 [inline] rhashtable_lookup_insert_key include/linux/rhashtable.h:967 [inline] __netlink_insert net/netlink/af_netlink.c:525 [inline] netlink_insert+0xeae/0x14b0 net/netlink/af_netlink.c:586 netlink_autobind+0x221/0x2f0 net/netlink/af_netlink.c:853 netlink_sendmsg+0x7a8/0xcb0 net/netlink/af_netlink.c:1864 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607 ___sys_sendmsg net/socket.c:2661 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2690 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: console_owner --> &p->pi_lock --> &rq->__lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&rq->__lock); lock(&p->pi_lock); lock(&rq->__lock); lock(console_owner); *** DEADLOCK *** 6 locks held by syz.3.692/8213: #0: ffff888035f2f258 (sk_lock-AF_NETLINK){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1611 [inline] #0: ffff888035f2f258 (sk_lock-AF_NETLINK){+.+.}-{0:0}, at: netlink_insert+0xd7/0x14b0 net/netlink/af_netlink.c:575 #1: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #1: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #1: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: __rhashtable_insert_fast include/linux/rhashtable.h:722 [inline] #1: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rhashtable_lookup_insert_key include/linux/rhashtable.h:967 [inline] #1: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: __netlink_insert net/netlink/af_netlink.c:525 [inline] #1: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: netlink_insert+0x31a/0x14b0 net/netlink/af_netlink.c:586 #2: ffff8880b863ea98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #3: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #3: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2315 [inline] #3: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x244/0x590 kernel/trace/bpf_trace.c:2359 #4: ffffffff8e813380 (console_lock){+.+.}-{0:0}, at: _printk+0xd5/0x120 kernel/printk/printk.c:2432 #5: ffffffff8e812f90 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:342 [inline] #5: ffffffff8e812f90 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:267 [inline] #5: ffffffff8e812f90 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline] #5: ffffffff8e812f90 (console_srcu){....}-{0:0}, at: console_flush_all+0x1a3/0xeb0 kernel/printk/printk.c:3157 stack backtrace: CPU: 0 UID: 0 PID: 8213 Comm: syz.3.692 Not tainted 6.12.0-rc7-syzkaller-g9f8e716d46c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904 __lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 console_lock_spinning_enable kernel/printk/printk.c:1905 [inline] console_emit_next_record kernel/printk/printk.c:3086 [inline] console_flush_all+0x7f8/0xeb0 kernel/printk/printk.c:3180 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3279 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2407 _printk+0xd5/0x120 kernel/printk/printk.c:2432 fail_dump lib/fault-inject.c:46 [inline] should_fail_ex+0x391/0x4e0 lib/fault-inject.c:154 strncpy_from_user+0x36/0x260 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:310 [inline] bpf_probe_read_compat_str+0xe9/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_c1796171ffc7efef+0x3e/0x40 bpf_dispatcher_nop_func include/linux/bpf.h:1265 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2316 [inline] bpf_trace_run4+0x334/0x590 kernel/trace/bpf_trace.c:2359 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x22bb/0x4c30 kernel/sched/core.c:6690 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7015 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:instrument_atomic_read include/linux/instrumented.h:68 [inline] RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] RIP: 0010:rht_grow_above_75 include/linux/rhashtable.h:186 [inline] RIP: 0010:__rhashtable_insert_fast include/linux/rhashtable.h:799 [inline] RIP: 0010:rhashtable_lookup_insert_key include/linux/rhashtable.h:967 [inline] RIP: 0010:__netlink_insert net/netlink/af_netlink.c:525 [inline] RIP: 0010:netlink_insert+0xeae/0x14b0 net/netlink/af_netlink.c:586 Code: e8 6e c1 f7 e8 63 3b 2d f7 e9 71 fc ff ff e8 d9 6e c1 f7 e8 e4 3c f4 01 4d 85 e4 0f 84 02 fd ff ff e8 c6 6e c1 f7 fb 4c 89 ef 04 00 00 00 e8 88 4d 2b f8 48 8b 44 24 08 42 0f b6 04 38 84 c0 RSP: 0018:ffffc9000348f7e0 EFLAGS: 00000293 RAX: ffffffff89d37b4a RBX: 0000000000000000 RCX: ffff8880258cda00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801dee0158 RBP: ffffc9000348f948 R08: ffffffff89d37830 R09: 1ffffffff285a115 R10: dffffc0000000000 R11: fffffbfff285a116 R12: 0000000000000200 R13: ffff88801dee0158 R14: 0000000000000046 R15: dffffc0000000000 netlink_autobind+0x221/0x2f0 net/netlink/af_netlink.c:853 netlink_sendmsg+0x7a8/0xcb0 net/netlink/af_netlink.c:1864 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607 ___sys_sendmsg net/socket.c:2661 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2690 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f887657e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f88772f0038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8876735f80 RCX: 00007f887657e719 RDX: 0000000000000000 RSI: 0000000020000940 RDI: 000000000000000b RBP: 00007f88772f0090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f8876735f80 R15: 00007ffe205494e8 CPU: 0 UID: 0 PID: 8213 Comm: syz.3.692 Not tainted 6.12.0-rc7-syzkaller-g9f8e716d46c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 fail_dump lib/fault-inject.c:53 [inline] should_fail_ex+0x3b0/0x4e0 lib/fault-inject.c:154 strncpy_from_user+0x36/0x260 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186 bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline] ____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:310 [inline] bpf_probe_read_compat_str+0xe9/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_c1796171ffc7efef+0x3e/0x40 bpf_dispatcher_nop_func include/linux/bpf.h:1265 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2316 [inline] bpf_trace_run4+0x334/0x590 kernel/trace/bpf_trace.c:2359 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x22bb/0x4c30 kernel/sched/core.c:6690 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7015 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:instrument_atomic_read include/linux/instrumented.h:68 [inline] RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline] RIP: 0010:rht_grow_above_75 include/linux/rhashtable.h:186 [inline] RIP: 0010:__rhashtable_insert_fast include/linux/rhashtable.h:799 [inline] RIP: 0010:rhashtable_lookup_insert_key include/linux/rhashtable.h:967 [inline] RIP: 0010:__netlink_insert net/netlink/af_netlink.c:525 [inline] RIP: 0010:netlink_insert+0xeae/0x14b0 net/netlink/af_netlink.c:586 Code: e8 6e c1 f7 e8 63 3b 2d f7 e9 71 fc ff ff e8 d9 6e c1 f7 e8 e4 3c f4 01 4d 85 e4 0f 84 02 fd ff ff e8 c6 6e c1 f7 fb 4c 89 ef 04 00 00 00 e8 88 4d 2b f8 48 8b 44 24 08 42 0f b6 04 38 84 c0 RSP: 0018:ffffc9000348f7e0 EFLAGS: 00000293 RAX: ffffffff89d37b4a RBX: 0000000000000000 RCX: ffff8880258cda00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801dee0158 RBP: ffffc9000348f948 R08: ffffffff89d37830 R09: 1ffffffff285a115 R10: dffffc0000000000 R11: fffffbfff285a116 R12: 0000000000000200 R13: ffff88801dee0158 R14: 0000000000000046 R15: dffffc0000000000 netlink_autobind+0x221/0x2f0 net/netlink/af_netlink.c:853 netlink_sendmsg+0x7a8/0xcb0 net/netlink/af_netlink.c:1864 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607 ___sys_sendmsg net/socket.c:2661 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2690 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f887657e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f88772f0038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f8876735f80 RCX: 00007f887657e719 RDX: 0000000000000000 RSI: 0000000020000940 RDI: 000000000000000b RBP: 00007f88772f0090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f8876735f80 R15: 00007ffe205494e8 netlink: 132 bytes leftover after parsing attributes in process `syz.3.692'. ---------------- Code disassembly (best guess), 4 bytes skipped: 0: e8 63 3b 2d f7 call 0xf72d3b68 5: e9 71 fc ff ff jmp 0xfffffc7b a: e8 d9 6e c1 f7 call 0xf7c16ee8 f: e8 e4 3c f4 01 call 0x1f43cf8 14: 4d 85 e4 test %r12,%r12 17: 0f 84 02 fd ff ff je 0xfffffd1f 1d: e8 c6 6e c1 f7 call 0xf7c16ee8 22: fb sti 23: 4c 89 ef mov %r13,%rdi * 26: be 04 00 00 00 mov $0x4,%esi <-- trapping instruction 2b: e8 88 4d 2b f8 call 0xf82b4db8 30: 48 8b 44 24 08 mov 0x8(%rsp),%rax 35: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax 3a: 84 c0 test %al,%al