FAULT_INJECTION: forcing a failure. name fail_usercopy, interval 1, probability 0, space 0, times 1 ====================================================== WARNING: possible circular locking dependency detected 6.16.0-syzkaller-gf3af62b6cee8 #0 Not tainted ------------------------------------------------------ syz.3.1446/11663 is trying to acquire lock: ffffffff8e12e0a0 (console_owner){-...}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline] ffffffff8e12e0a0 (console_owner){-...}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:319 [inline] ffffffff8e12e0a0 (console_owner){-...}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline] ffffffff8e12e0a0 (console_owner){-...}-{0:0}, at: console_flush_all+0x13a/0xc40 kernel/printk/printk.c:3203 but task is already holding lock: ffff8880b8739f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:636 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #5 (&rq->__lock){-.-.}-{2:2}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 _raw_spin_lock_nested+0x32/0x50 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:636 raw_spin_rq_lock kernel/sched/sched.h:1519 [inline] task_rq_lock+0xbc/0x470 kernel/sched/core.c:736 cgroup_move_task+0x92/0x2a0 kernel/sched/psi.c:1174 css_set_move_task+0x658/0x9e0 kernel/cgroup/cgroup.c:918 cgroup_post_fork+0x1ef/0x790 kernel/cgroup/cgroup.c:6759 copy_process+0x3862/0x3c00 kernel/fork.c:2417 kernel_clone+0x21e/0x840 kernel/fork.c:2603 user_mode_thread+0xdd/0x140 kernel/fork.c:2681 rest_init+0x23/0x300 init/main.c:709 start_kernel+0x3a9/0x410 init/main.c:1097 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:307 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:288 common_startup_64+0x13e/0x147 -> #4 (&p->pi_lock){-.-.}-{2:2}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:557 [inline] try_to_wake_up+0x67/0x12b0 kernel/sched/core.c:4216 create_worker+0x503/0x720 kernel/workqueue.c:2832 workqueue_init+0x3f0/0x6a0 kernel/workqueue.c:7918 kernel_init_freeable+0x302/0x4a0 init/main.c:1564 kernel_init+0x1d/0x1d0 init/main.c:1469 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #3 (&pool->lock){-.-.}-{2:2}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 __queue_work+0x809/0xfb0 kernel/workqueue.c:-1 queue_work_on+0x181/0x270 kernel/workqueue.c:2390 queue_work include/linux/workqueue.h:669 [inline] rpm_suspend+0xe54/0x1720 drivers/base/power/runtime.c:685 __pm_runtime_idle+0x12f/0x1a0 drivers/base/power/runtime.c:1124 pm_runtime_put include/linux/pm_runtime.h:555 [inline] __device_attach+0x342/0x400 drivers/base/dd.c:1049 bus_probe_device+0x185/0x260 drivers/base/bus.c:537 device_add+0x7b6/0xb50 drivers/base/core.c:3689 serial_base_port_add+0x2e3/0x410 drivers/tty/serial/serial_base_bus.c:183 serial_core_port_device_add drivers/tty/serial/serial_core.c:3309 [inline] serial_core_register_port+0x369/0x27c0 drivers/tty/serial/serial_core.c:3348 serial8250_register_8250_port+0x16db/0x2050 drivers/tty/serial/8250/8250_core.c:829 serial_pnp_probe+0x527/0x790 drivers/tty/serial/8250/8250_pnp.c:480 pnp_device_probe+0x308/0x4c0 drivers/pnp/driver.c:111 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x26a/0x9e0 drivers/base/dd.c:659 __driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801 driver_probe_device+0x4f/0x430 drivers/base/dd.c:831 __driver_attach+0x452/0x700 drivers/base/dd.c:1217 bus_for_each_dev+0x230/0x2b0 drivers/base/bus.c:370 bus_add_driver+0x345/0x640 drivers/base/bus.c:678 driver_register+0x23a/0x320 drivers/base/driver.c:249 serial8250_init+0x8f/0x160 drivers/tty/serial/8250/8250_platform.c:315 do_one_initcall+0x233/0x820 init/main.c:1269 do_initcall_level+0x104/0x190 init/main.c:1331 do_initcalls+0x59/0xa0 init/main.c:1347 kernel_init_freeable+0x334/0x4a0 init/main.c:1579 kernel_init+0x1d/0x1d0 init/main.c:1469 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 -> #2 (&dev->power.lock){-.-.}-{3:3}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 __pm_runtime_resume+0x10f/0x180 drivers/base/power/runtime.c:1191 pm_runtime_get include/linux/pm_runtime.h:492 [inline] __uart_start+0x171/0x460 drivers/tty/serial/serial_core.c:149 uart_write+0xdc/0x130 drivers/tty/serial/serial_core.c:636 process_output_block drivers/tty/n_tty.c:561 [inline] n_tty_write+0xd29/0x1200 drivers/tty/n_tty.c:2377 iterate_tty_write drivers/tty/tty_io.c:1006 [inline] file_tty_write+0x551/0xa20 drivers/tty/tty_io.c:1081 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x54b/0xa90 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f -> #1 (&port_lock_key){-.-.}-{3:3}: lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 uart_port_lock_irqsave include/linux/serial_core.h:717 [inline] serial8250_console_write+0x17e/0x1ba0 drivers/tty/serial/8250/8250_port.c:3355 console_emit_next_record kernel/printk/printk.c:3138 [inline] console_flush_all+0x728/0xc40 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 _printk+0xcf/0x120 kernel/printk/printk.c:2475 register_console+0xa8b/0xf90 kernel/printk/printk.c:4125 univ8250_console_init+0x3a/0x70 drivers/tty/serial/8250/8250_core.c:516 console_init+0x10e/0x430 kernel/printk/printk.c:4323 start_kernel+0x254/0x410 init/main.c:1035 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:307 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:288 common_startup_64+0x13e/0x147 -> #0 (console_owner){-...}-{0:0}: check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 console_lock_spinning_enable kernel/printk/printk.c:1924 [inline] console_emit_next_record kernel/printk/printk.c:3132 [inline] console_flush_all+0x6d2/0xc40 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 _printk+0xcf/0x120 kernel/printk/printk.c:2475 fail_dump lib/fault-inject.c:66 [inline] should_fail_ex+0x3f5/0x560 lib/fault-inject.c:174 strncpy_from_user+0x36/0x290 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x72/0x150 mm/maccess.c:192 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+0xe2/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_07ce70d87944ebe7+0x44/0x4f bpf_dispatcher_nop_func include/linux/bpf.h:1332 [inline] __bpf_prog_run include/linux/filter.h:718 [inline] bpf_prog_run include/linux/filter.h:725 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline] bpf_trace_run2+0x281/0x4b0 kernel/trace/bpf_trace.c:2298 __bpf_trace_tlb_flush+0xf5/0x150 include/trace/events/tlb.h:38 __traceiter_tlb_flush+0x76/0xd0 include/trace/events/tlb.h:38 __do_trace_tlb_flush include/trace/events/tlb.h:38 [inline] trace_tlb_flush+0x115/0x140 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x53e/0x7a0 arch/x86/mm/tlb.c:-1 context_switch kernel/sched/core.c:5341 [inline] __schedule+0x110e/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 net_generic include/net/netns/generic.h:46 [inline] tipc_net+0xfc/0x270 net/tipc/core.h:151 tipc_own_addr net/tipc/addr.h:93 [inline] tipc_nametbl_lookup_group+0x3f/0xc20 net/tipc/name_table.c:632 tipc_send_group_mcast net/tipc/socket.c:1170 [inline] __tipc_sendmsg+0x1371/0x2960 net/tipc/socket.c:1438 __tipc_sendstream+0x1041/0x1290 net/tipc/socket.c:1573 tipc_sendstream net/tipc/socket.c:1546 [inline] tipc_send_packet+0x7c/0xa0 net/tipc/socket.c:1652 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 ____sys_sendmsg+0x505/0x830 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [inline] __do_sys_sendmsg net/socket.c:2705 [inline] __se_sys_sendmsg net/socket.c:2703 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 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.3.1446/11663: #0: ffff88807acf5958 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1667 [inline] #0: ffff88807acf5958 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: tipc_sendstream net/tipc/socket.c:1545 [inline] #0: ffff88807acf5958 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: tipc_send_packet+0x6e/0xa0 net/tipc/socket.c:1652 #1: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #1: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #1: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: net_generic include/net/netns/generic.h:45 [inline] #1: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: tipc_net+0x45/0x270 net/tipc/core.h:151 #2: ffff8880b8739f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:636 #3: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #3: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #3: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2256 [inline] #3: ffffffff8e139e60 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x186/0x4b0 kernel/trace/bpf_trace.c:2298 #4: ffffffff8e12e100 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x120 kernel/printk/printk.c:2475 #5: ffffffff8e0159d0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline] #5: ffffffff8e0159d0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:319 [inline] #5: ffffffff8e0159d0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline] #5: ffffffff8e0159d0 (console_srcu){....}-{0:0}, at: console_flush_all+0x13a/0xc40 kernel/printk/printk.c:3203 stack backtrace: CPU: 1 UID: 0 PID: 11663 Comm: syz.3.1446 Not tainted 6.16.0-syzkaller-gf3af62b6cee8 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043 check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175 check_prev_add kernel/locking/lockdep.c:3165 [inline] check_prevs_add kernel/locking/lockdep.c:3284 [inline] validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 console_lock_spinning_enable kernel/printk/printk.c:1924 [inline] console_emit_next_record kernel/printk/printk.c:3132 [inline] console_flush_all+0x6d2/0xc40 kernel/printk/printk.c:3226 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline] console_unlock+0xc4/0x270 kernel/printk/printk.c:3325 vprintk_emit+0x5b7/0x7a0 kernel/printk/printk.c:2450 _printk+0xcf/0x120 kernel/printk/printk.c:2475 fail_dump lib/fault-inject.c:66 [inline] should_fail_ex+0x3f5/0x560 lib/fault-inject.c:174 strncpy_from_user+0x36/0x290 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x72/0x150 mm/maccess.c:192 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+0xe2/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_07ce70d87944ebe7+0x44/0x4f bpf_dispatcher_nop_func include/linux/bpf.h:1332 [inline] __bpf_prog_run include/linux/filter.h:718 [inline] bpf_prog_run include/linux/filter.h:725 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline] bpf_trace_run2+0x281/0x4b0 kernel/trace/bpf_trace.c:2298 __bpf_trace_tlb_flush+0xf5/0x150 include/trace/events/tlb.h:38 __traceiter_tlb_flush+0x76/0xd0 include/trace/events/tlb.h:38 __do_trace_tlb_flush include/trace/events/tlb.h:38 [inline] trace_tlb_flush+0x115/0x140 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x53e/0x7a0 arch/x86/mm/tlb.c:-1 context_switch kernel/sched/core.c:5341 [inline] __schedule+0x110e/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:net_generic include/net/netns/generic.h:46 [inline] RIP: 0010:tipc_net+0xfc/0x270 net/tipc/core.h:151 Code: 00 48 c7 c2 e0 68 b2 8c e8 31 f9 88 f6 49 81 c6 08 14 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 b4 67 0e f7 <4d> 8b 36 e8 fc db 62 00 89 c5 31 ff 89 c6 e8 81 18 ab f6 85 ed 74 RSP: 0018:ffffc9000dfbf270 EFLAGS: 00000246 RAX: 1ffff11004effb91 RBX: ffffffff8b1489e5 RCX: ffff8880254c3c00 RDX: 0000000000000000 RSI: ffffffff8be2fce0 RDI: ffffffff8be2fca0 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8b1489e5 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000052 R13: ffffc9000dfbf540 R14: ffff8880277fdc88 R15: dffffc0000000000 tipc_own_addr net/tipc/addr.h:93 [inline] tipc_nametbl_lookup_group+0x3f/0xc20 net/tipc/name_table.c:632 tipc_send_group_mcast net/tipc/socket.c:1170 [inline] __tipc_sendmsg+0x1371/0x2960 net/tipc/socket.c:1438 __tipc_sendstream+0x1041/0x1290 net/tipc/socket.c:1573 tipc_sendstream net/tipc/socket.c:1546 [inline] tipc_send_packet+0x7c/0xa0 net/tipc/socket.c:1652 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 ____sys_sendmsg+0x505/0x830 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [inline] __do_sys_sendmsg net/socket.c:2705 [inline] __se_sys_sendmsg net/socket.c:2703 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1d9e58eb69 Code: Unable to access opcode bytes at 0x7f1d9e58eb3f. RSP: 002b:00007f1d9f3f5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1d9e7b5fa0 RCX: 00007f1d9e58eb69 RDX: 0000000000000000 RSI: 0000200000000100 RDI: 000000000000000a RBP: 00007f1d9f3f5090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f1d9e7b5fa0 R15: 00007ffefbc04608 CPU: 1 UID: 0 PID: 11663 Comm: syz.3.1446 Not tainted 6.16.0-syzkaller-gf3af62b6cee8 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 fail_dump lib/fault-inject.c:73 [inline] should_fail_ex+0x414/0x560 lib/fault-inject.c:174 strncpy_from_user+0x36/0x290 lib/strncpy_from_user.c:118 strncpy_from_user_nofault+0x72/0x150 mm/maccess.c:192 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+0xe2/0x180 kernel/trace/bpf_trace.c:306 bpf_prog_07ce70d87944ebe7+0x44/0x4f bpf_dispatcher_nop_func include/linux/bpf.h:1332 [inline] __bpf_prog_run include/linux/filter.h:718 [inline] bpf_prog_run include/linux/filter.h:725 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline] bpf_trace_run2+0x281/0x4b0 kernel/trace/bpf_trace.c:2298 __bpf_trace_tlb_flush+0xf5/0x150 include/trace/events/tlb.h:38 __traceiter_tlb_flush+0x76/0xd0 include/trace/events/tlb.h:38 __do_trace_tlb_flush include/trace/events/tlb.h:38 [inline] trace_tlb_flush+0x115/0x140 include/trace/events/tlb.h:38 switch_mm_irqs_off+0x53e/0x7a0 arch/x86/mm/tlb.c:-1 context_switch kernel/sched/core.c:5341 [inline] __schedule+0x110e/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288 irqentry_exit+0x6f/0x90 kernel/entry/common.c:197 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:net_generic include/net/netns/generic.h:46 [inline] RIP: 0010:tipc_net+0xfc/0x270 net/tipc/core.h:151 Code: 00 48 c7 c2 e0 68 b2 8c e8 31 f9 88 f6 49 81 c6 08 14 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 b4 67 0e f7 <4d> 8b 36 e8 fc db 62 00 89 c5 31 ff 89 c6 e8 81 18 ab f6 85 ed 74 RSP: 0018:ffffc9000dfbf270 EFLAGS: 00000246 RAX: 1ffff11004effb91 RBX: ffffffff8b1489e5 RCX: ffff8880254c3c00 RDX: 0000000000000000 RSI: ffffffff8be2fce0 RDI: ffffffff8be2fca0 RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8b1489e5 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000052 R13: ffffc9000dfbf540 R14: ffff8880277fdc88 R15: dffffc0000000000 tipc_own_addr net/tipc/addr.h:93 [inline] tipc_nametbl_lookup_group+0x3f/0xc20 net/tipc/name_table.c:632 tipc_send_group_mcast net/tipc/socket.c:1170 [inline] __tipc_sendmsg+0x1371/0x2960 net/tipc/socket.c:1438 __tipc_sendstream+0x1041/0x1290 net/tipc/socket.c:1573 tipc_sendstream net/tipc/socket.c:1546 [inline] tipc_send_packet+0x7c/0xa0 net/tipc/socket.c:1652 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:729 ____sys_sendmsg+0x505/0x830 net/socket.c:2614 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668 __sys_sendmsg net/socket.c:2700 [inline] __do_sys_sendmsg net/socket.c:2705 [inline] __se_sys_sendmsg net/socket.c:2703 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1d9e58eb69 Code: Unable to access opcode bytes at 0x7f1d9e58eb3f. RSP: 002b:00007f1d9f3f5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1d9e7b5fa0 RCX: 00007f1d9e58eb69 RDX: 0000000000000000 RSI: 0000200000000100 RDI: 000000000000000a RBP: 00007f1d9f3f5090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 00007f1d9e7b5fa0 R15: 00007ffefbc04608 ---------------- Code disassembly (best guess): 0: 00 48 c7 add %cl,-0x39(%rax) 3: c2 e0 68 ret $0x68e0 6: b2 8c mov $0x8c,%dl 8: e8 31 f9 88 f6 call 0xf688f93e d: 49 81 c6 08 14 00 00 add $0x1408,%r14 14: 4c 89 f0 mov %r14,%rax 17: 48 c1 e8 03 shr $0x3,%rax 1b: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 20: 74 08 je 0x2a 22: 4c 89 f7 mov %r14,%rdi 25: e8 b4 67 0e f7 call 0xf70e67de * 2a: 4d 8b 36 mov (%r14),%r14 <-- trapping instruction 2d: e8 fc db 62 00 call 0x62dc2e 32: 89 c5 mov %eax,%ebp 34: 31 ff xor %edi,%edi 36: 89 c6 mov %eax,%esi 38: e8 81 18 ab f6 call 0xf6ab18be 3d: 85 ed test %ebp,%ebp 3f: 74 .byte 0x74