------------[ cut here ]------------ ====================================================== WARNING: possible circular locking dependency detected 5.15.164-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor/3999 is trying to acquire lock: ffffffff8c7fc378 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138 but task is already holding lock: ffff8880b9a28098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:946 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&base->lock){-.-.}-{2:2}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 lock_timer_base+0x120/0x260 kernel/time/timer.c:946 __mod_timer+0x1d6/0xeb0 kernel/time/timer.c:1019 queue_delayed_work_on+0x156/0x250 kernel/workqueue.c:1715 psi_enqueue kernel/sched/stats.h:104 [inline] enqueue_task+0x2fe/0x3a0 kernel/sched/core.c:1973 activate_task kernel/sched/core.c:2005 [inline] wake_up_new_task+0x515/0xb60 kernel/sched/core.c:4522 kernel_clone+0x44e/0x960 kernel/fork.c:2628 kernel_thread+0x168/0x1e0 kernel/fork.c:2656 rest_init+0x21/0x330 init/main.c:706 start_kernel+0x48c/0x540 init/main.c:1140 secondary_startup_64_no_verify+0xb1/0xbb -> #2 (&rq->__lock){-.-.}-{2:2}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 _raw_spin_lock_nested+0x2d/0x40 kernel/locking/spinlock.c:368 raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475 raw_spin_rq_lock kernel/sched/sched.h:1326 [inline] rq_lock kernel/sched/sched.h:1621 [inline] task_fork_fair+0x5d/0x350 kernel/sched/fair.c:11495 sched_cgroup_fork+0x2d3/0x330 kernel/sched/core.c:4466 copy_process+0x224a/0x3ef0 kernel/fork.c:2320 kernel_clone+0x210/0x960 kernel/fork.c:2604 kernel_thread+0x168/0x1e0 kernel/fork.c:2656 rest_init+0x21/0x330 init/main.c:706 start_kernel+0x48c/0x540 init/main.c:1140 secondary_startup_64_no_verify+0xb1/0xbb -> #1 (&p->pi_lock){-.-.}-{2:2}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4030 up+0x6e/0x90 kernel/locking/semaphore.c:190 __up_console_sem+0x11a/0x1e0 kernel/printk/printk.c:256 console_unlock+0x1145/0x12b0 kernel/printk/printk.c:2760 vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274 _printk+0xd1/0x120 kernel/printk/printk.c:2299 __nla_validate_parse+0x1fb9/0x27f0 lib/nlattr.c:603 __nla_validate+0x3a/0x50 lib/nlattr.c:633 nlmsg_validate_deprecated include/net/netlink.h:873 [inline] rtm_to_fib_config+0xa5/0x11c0 net/ipv4/fib_frontend.c:733 inet_rtm_newroute+0xed/0x280 net/ipv4/fib_frontend.c:882 rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5629 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline] netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1352 netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1920 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2485 __sys_sendmsg net/socket.c:2514 [inline] __do_sys_sendmsg net/socket.c:2523 [inline] __se_sys_sendmsg+0x19a/0x260 net/socket.c:2521 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 ((console_sem).lock){-.-.}-{2:2}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138 __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:239 console_trylock kernel/printk/printk.c:2575 [inline] console_trylock_spinning+0x8a/0x3f0 kernel/printk/printk.c:1867 vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273 _printk+0xd1/0x120 kernel/printk/printk.c:2299 report_bug+0x1e5/0x2e0 lib/bug.c:195 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:566 copy_from_user_nofault+0x15c/0x1c0 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_02073d59a3c0f06f+0x3d/0x97c bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586 internal_add_timer kernel/time/timer.c:611 [inline] __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062 dummy_timer+0x309d/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1998 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:28 [inline] queued_spin_is_contended include/asm-generic/qspinlock.h:54 [inline] spin_is_contended include/linux/spinlock.h:461 [inline] spin_needbreak include/linux/sched.h:2088 [inline] copy_pte_range mm/memory.c:1041 [inline] copy_pmd_range mm/memory.c:1156 [inline] copy_pud_range mm/memory.c:1193 [inline] copy_p4d_range mm/memory.c:1217 [inline] copy_page_range+0x1181/0x43b0 mm/memory.c:1290 dup_mmap kernel/fork.c:614 [inline] dup_mm kernel/fork.c:1465 [inline] copy_mm+0xc64/0x1370 kernel/fork.c:1517 copy_process+0x1816/0x3ef0 kernel/fork.c:2206 kernel_clone+0x210/0x960 kernel/fork.c:2604 __do_sys_clone kernel/fork.c:2721 [inline] __se_sys_clone kernel/fork.c:2705 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 other info that might help us debug this: Chain exists of: (console_sem).lock --> &rq->__lock --> &base->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&base->lock); lock(&rq->__lock); lock(&base->lock); lock((console_sem).lock); *** DEADLOCK *** 9 locks held by syz-executor/3999: #0: ffffffff8c9ab030 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mmap kernel/fork.c:502 [inline] #0: ffffffff8c9ab030 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm kernel/fork.c:1465 [inline] #0: ffffffff8c9ab030 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x223/0x1370 kernel/fork.c:1517 #1: ffff88801ea59628 (&mm->mmap_lock){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #1: ffff88801ea59628 (&mm->mmap_lock){++++}-{3:3}, at: dup_mmap kernel/fork.c:503 [inline] #1: ffff88801ea59628 (&mm->mmap_lock){++++}-{3:3}, at: dup_mm kernel/fork.c:1465 [inline] #1: ffff88801ea59628 (&mm->mmap_lock){++++}-{3:3}, at: copy_mm+0x242/0x1370 kernel/fork.c:1517 #2: ffff88807583ab28 (&mm->mmap_lock/1){+.+.}-{3:3}, at: mmap_write_lock_nested include/linux/mmap_lock.h:78 [inline] #2: ffff88807583ab28 (&mm->mmap_lock/1){+.+.}-{3:3}, at: dup_mmap kernel/fork.c:512 [inline] #2: ffff88807583ab28 (&mm->mmap_lock/1){+.+.}-{3:3}, at: dup_mm kernel/fork.c:1465 [inline] #2: ffff88807583ab28 (&mm->mmap_lock/1){+.+.}-{3:3}, at: copy_mm+0x35c/0x1370 kernel/fork.c:1517 #3: ffff888025023af8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline] #3: ffff888025023af8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: copy_pte_range mm/memory.c:1021 [inline] #3: ffff888025023af8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: copy_pmd_range mm/memory.c:1156 [inline] #3: ffff888025023af8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: copy_pud_range mm/memory.c:1193 [inline] #3: ffff888025023af8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: copy_p4d_range mm/memory.c:1217 [inline] #3: ffff888025023af8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: copy_page_range+0xfc2/0x43b0 mm/memory.c:1290 #4: ffff888023f16678 (ptlock_ptr(page)#2/1){+.+.}-{2:2}, at: copy_pte_range mm/memory.c:1028 [inline] #4: ffff888023f16678 (ptlock_ptr(page)#2/1){+.+.}-{2:2}, at: copy_pmd_range mm/memory.c:1156 [inline] #4: ffff888023f16678 (ptlock_ptr(page)#2/1){+.+.}-{2:2}, at: copy_pud_range mm/memory.c:1193 [inline] #4: ffff888023f16678 (ptlock_ptr(page)#2/1){+.+.}-{2:2}, at: copy_p4d_range mm/memory.c:1217 [inline] #4: ffff888023f16678 (ptlock_ptr(page)#2/1){+.+.}-{2:2}, at: copy_page_range+0x10bd/0x43b0 mm/memory.c:1290 #5: ffffc90000007be0 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:45 [inline] #5: ffffc90000007be0 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xbe/0x560 kernel/time/timer.c:1441 #6: ffff8881479e8018 (&dum_hcd->dum->lock){..-.}-{2:2}, at: dummy_timer+0x160/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1814 #7: ffff8880b9a28098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:946 #8: ffffffff8c91fb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311 stack backtrace: CPU: 0 PID: 3999 Comm: syz-executor Not tainted 5.15.164-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138 __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:239 console_trylock kernel/printk/printk.c:2575 [inline] console_trylock_spinning+0x8a/0x3f0 kernel/printk/printk.c:1867 vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273 _printk+0xd1/0x120 kernel/printk/printk.c:2299 report_bug+0x1e5/0x2e0 lib/bug.c:195 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:566 RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226 Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb c9 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 c9 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff RSP: 0018:ffffc90000007580 EFLAGS: 00010046 RAX: ffffffff81aa97ac RBX: 0000000000000000 RCX: ffff88801338d940 RDX: 0000000000000105 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff81aa96bd R09: fffffbfff1f8e019 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000008 R14: 0000000000000000 R15: ffffc900000075e8 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_02073d59a3c0f06f+0x3d/0x97c bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586 internal_add_timer kernel/time/timer.c:611 [inline] __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062 dummy_timer+0x309d/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1998 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:copy_pte_range mm/memory.c:1041 [inline] RIP: 0010:copy_pmd_range mm/memory.c:1156 [inline] RIP: 0010:copy_pud_range mm/memory.c:1193 [inline] RIP: 0010:copy_p4d_range mm/memory.c:1217 [inline] RIP: 0010:copy_page_range+0x1181/0x43b0 mm/memory.c:1290 Code: df be 04 00 00 00 e8 7e 01 12 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 8d 12 00 00 8b 1b 00 01 00 00 89 de e8 43 2f c8 ff 81 fb 00 01 00 00 0f 83 a3 24 RSP: 0018:ffffc90002d875e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888023f16660 RBP: ffffc90002d87950 R08: dffffc0000000000 R09: ffffed10047e2ccd R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801d8ae210 R13: 00fff00000000000 R14: 0000000000000020 R15: ffff88801d8ae260 dup_mmap kernel/fork.c:614 [inline] dup_mm kernel/fork.c:1465 [inline] copy_mm+0xc64/0x1370 kernel/fork.c:1517 copy_process+0x1816/0x3ef0 kernel/fork.c:2206 kernel_clone+0x210/0x960 kernel/fork.c:2604 __do_sys_clone kernel/fork.c:2721 [inline] __se_sys_clone kernel/fork.c:2705 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f697e077c13 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffc3dcb8328 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f697e077c13 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 000055555733a7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000001a149 R14: 000000000001a130 R15: 00007ffc3dcb84b0 WARNING: CPU: 0 PID: 3999 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0 Modules linked in: CPU: 0 PID: 3999 Comm: syz-executor Not tainted 5.15.164-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226 Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb c9 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 c9 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff RSP: 0018:ffffc90000007580 EFLAGS: 00010046 RAX: ffffffff81aa97ac RBX: 0000000000000000 RCX: ffff88801338d940 RDX: 0000000000000105 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff81aa96bd R09: fffffbfff1f8e019 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 0000000000000008 R14: 0000000000000000 R15: ffffc900000075e8 FS: 000055555733a500(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f697ed3f6c0 CR3: 000000005fdf8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_02073d59a3c0f06f+0x3d/0x97c bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586 internal_add_timer kernel/time/timer.c:611 [inline] __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062 dummy_timer+0x309d/0x3200 drivers/usb/gadget/udc/dummy_hcd.c:1998 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:copy_pte_range mm/memory.c:1041 [inline] RIP: 0010:copy_pmd_range mm/memory.c:1156 [inline] RIP: 0010:copy_pud_range mm/memory.c:1193 [inline] RIP: 0010:copy_p4d_range mm/memory.c:1217 [inline] RIP: 0010:copy_page_range+0x1181/0x43b0 mm/memory.c:1290 Code: df be 04 00 00 00 e8 7e 01 12 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 8d 12 00 00 8b 1b 00 01 00 00 89 de e8 43 2f c8 ff 81 fb 00 01 00 00 0f 83 a3 24 RSP: 0018:ffffc90002d875e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888023f16660 RBP: ffffc90002d87950 R08: dffffc0000000000 R09: ffffed10047e2ccd R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801d8ae210 R13: 00fff00000000000 R14: 0000000000000020 R15: ffff88801d8ae260 dup_mmap kernel/fork.c:614 [inline] dup_mm kernel/fork.c:1465 [inline] copy_mm+0xc64/0x1370 kernel/fork.c:1517 copy_process+0x1816/0x3ef0 kernel/fork.c:2206 kernel_clone+0x210/0x960 kernel/fork.c:2604 __do_sys_clone kernel/fork.c:2721 [inline] __se_sys_clone kernel/fork.c:2705 [inline] __x64_sys_clone+0x23f/0x290 kernel/fork.c:2705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f697e077c13 Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffc3dcb8328 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f697e077c13 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 000055555733a7d0 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000001a149 R14: 000000000001a130 R15: 00007ffc3dcb84b0 ---------------- Code disassembly (best guess): 0: df be 04 00 00 00 fistpll 0x4(%rsi) 6: e8 7e 01 12 00 call 0x120189 b: 48 89 d8 mov %rbx,%rax e: 48 c1 e8 03 shr $0x3,%rax 12: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 19: fc ff df 1c: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax 20: 84 c0 test %al,%al 22: 0f 85 8d 12 00 00 jne 0x12b5 28: 8b 1b mov (%rbx),%ebx * 2a: bf 00 01 00 00 mov $0x100,%edi <-- trapping instruction 2f: 89 de mov %ebx,%esi 31: e8 43 2f c8 ff call 0xffc82f79 36: 81 fb 00 01 00 00 cmp $0x100,%ebx 3c: 0f .byte 0xf 3d: 83 .byte 0x83 3e: a3 .byte 0xa3 3f: 24 .byte 0x24