------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.14.0-rc3-syzkaller-00180-ga3daad821514 #0 Not tainted
------------------------------------------------------
syz.1.42/6148 is trying to acquire lock:
ffffffff8e0ca140 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable+0x9f/0xd0 kernel/printk/printk.c:1924

but task is already holding lock:
ffff8880b863ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline]
ffff8880b863ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:591

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&rq->__lock){-.-.}-{2:2}:
       _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
       raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598
       raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
       task_rq_lock+0xcf/0x3b0 kernel/sched/core.c:700
       cgroup_move_task+0x82/0x250 kernel/sched/psi.c:1161
       css_set_move_task+0x288/0x5f0 kernel/cgroup/cgroup.c:898
       cgroup_post_fork+0x202/0x9d0 kernel/cgroup/cgroup.c:6695
       copy_process+0x4ffd/0x8c50 kernel/fork.c:2629
       kernel_clone+0xfd/0x960 kernel/fork.c:2815
       user_mode_thread+0xc9/0x110 kernel/fork.c:2893
       rest_init+0x23/0x2b0 init/main.c:708
       start_kernel+0x3e9/0x4d0 init/main.c:1099
       x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:515
       x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:496
       common_startup_64+0x13e/0x148

-> #3 (&p->pi_lock){-.-.}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
       class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
       try_to_wake_up+0xb6/0x1490 kernel/sched/core.c:4214
       __wake_up_common+0x131/0x1e0 kernel/sched/wait.c:89
       __wake_up_common_lock kernel/sched/wait.c:106 [inline]
       __wake_up+0x31/0x60 kernel/sched/wait.c:127
       tty_port_default_wakeup+0x2a/0x40 drivers/tty/tty_port.c:69
       serial8250_tx_chars+0x68e/0x860 drivers/tty/serial/8250/8250_port.c:1844
       serial8250_handle_irq+0x74c/0xc80 drivers/tty/serial/8250/8250_port.c:1952
       serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1972
       serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:86
       __handle_irq_event_percpu+0x229/0x7d0 kernel/irq/handle.c:158
       handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
       handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
       handle_edge_irq+0x263/0xd10 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+0xdf/0x250 arch/x86/kernel/irq.c:285
       common_interrupt+0xba/0xe0 arch/x86/kernel/irq.c:278
       asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
       check_kcov_mode kernel/kcov.c:185 [inline]
       write_comp_data+0x42/0x90 kernel/kcov.c:246
       is_swap_pmd include/linux/huge_mm.h:413 [inline]
       is_pmd_migration_entry include/linux/swapops.h:583 [inline]
       ___pte_offset_map+0x485/0x540 mm/pgtable-generic.c:294
       __pte_offset_map include/linux/mm.h:3032 [inline]
       __pte_offset_map_lock+0x8e/0x300 mm/pgtable-generic.c:398
       pte_offset_map_lock include/linux/mm.h:3047 [inline]
       wp_page_copy mm/memory.c:3482 [inline]
       do_wp_page+0x1331/0x4670 mm/memory.c:3838
       handle_pte_fault mm/memory.c:5916 [inline]
       __handle_mm_fault+0x1c7c/0x2c60 mm/memory.c:6043
       handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6212
       do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1337
       handle_page_fault arch/x86/mm/fault.c:1480 [inline]
       exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
       asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

-> #2 (&tty->write_wait){-.-.}-{3:3}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
       __wake_up_common_lock kernel/sched/wait.c:105 [inline]
       __wake_up+0x1c/0x60 kernel/sched/wait.c:127
       tty_port_default_wakeup+0x2a/0x40 drivers/tty/tty_port.c:69
       serial8250_tx_chars+0x68e/0x860 drivers/tty/serial/8250/8250_port.c:1844
       serial8250_handle_irq+0x74c/0xc80 drivers/tty/serial/8250/8250_port.c:1952
       serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1972
       serial8250_interrupt+0x103/0x210 drivers/tty/serial/8250/8250_core.c:86
       __handle_irq_event_percpu+0x229/0x7d0 kernel/irq/handle.c:158
       handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
       handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210
       handle_edge_irq+0x263/0xd10 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+0xdf/0x250 arch/x86/kernel/irq.c:285
       common_interrupt+0xba/0xe0 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:151 [inline]
       _raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
       spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
       uart_port_unlock_irqrestore include/linux/serial_core.h:786 [inline]
       uart_write+0x2a4/0xb30 drivers/tty/serial/serial_core.c:636
       process_output_block drivers/tty/n_tty.c:574 [inline]
       n_tty_write+0x419/0x1140 drivers/tty/n_tty.c:2389
       iterate_tty_write drivers/tty/tty_io.c:1015 [inline]
       file_tty_write.constprop.0+0x506/0x9a0 drivers/tty/tty_io.c:1090
       tty_write drivers/tty/tty_io.c:1111 [inline]
       redirected_tty_write drivers/tty/tty_io.c:1134 [inline]
       redirected_tty_write+0xcc/0x140 drivers/tty/tty_io.c:1114
       new_sync_write fs/read_write.c:586 [inline]
       vfs_write+0x5ae/0x1150 fs/read_write.c:679
       ksys_write+0x12b/0x250 fs/read_write.c:731
       do_syscall_x64 arch/x86/entry/common.c:52 [inline]
       do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
       entry_SYSCALL_64_after_hwframe+0x77/0x7f

-> #1 (&port_lock_key){-.-.}-{3:3}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
       uart_port_lock_irqsave include/linux/serial_core.h:715 [inline]
       serial8250_console_write+0x17c/0x1870 drivers/tty/serial/8250/8250_port.c:3424
       console_emit_next_record kernel/printk/printk.c:3122 [inline]
       console_flush_all+0x803/0xc60 kernel/printk/printk.c:3210
       __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
       console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
       vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
       _printk+0xc8/0x100 kernel/printk/printk.c:2457
       register_console+0xbfd/0x1170 kernel/printk/printk.c:4099
       univ8250_console_init+0x5f/0x90 drivers/tty/serial/8250/8250_core.c:513
       console_init+0x154/0x690 kernel/printk/printk.c:4292
       start_kernel+0x29f/0x4d0 init/main.c:1034
       x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:515
       x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:496
       common_startup_64+0x13e/0x148

-> #0 (console_owner){-...}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3163 [inline]
       check_prevs_add kernel/locking/lockdep.c:3282 [inline]
       validate_chain kernel/locking/lockdep.c:3906 [inline]
       __lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5228
       lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
       console_lock_spinning_enable+0xb0/0xd0 kernel/printk/printk.c:1924
       console_emit_next_record kernel/printk/printk.c:3116 [inline]
       console_flush_all+0x7ac/0xc60 kernel/printk/printk.c:3210
       __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
       console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
       vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
       _printk+0xc8/0x100 kernel/printk/printk.c:2457
       __report_bug lib/bug.c:195 [inline]
       report_bug+0x433/0x580 lib/bug.c:219
       handle_bug+0x54/0xa0 arch/x86/kernel/traps.c:285
       exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:309
       asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
       lockdep_assert_rq_held kernel/sched/sched.h:1512 [inline]
       lockdep_assert_rq_held kernel/sched/sched.h:1510 [inline]
       update_rq_clock+0xe4/0xaf0 kernel/sched/core.c:798
       pick_next_task kernel/sched/core.c:6221 [inline]
       __schedule+0x24c4/0x5890 kernel/sched/core.c:6717
       preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7087
       irqentry_exit+0x36/0x90 kernel/entry/common.c:354
       asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
       check_kcov_mode kernel/kcov.c:185 [inline]
       write_comp_data+0x42/0x90 kernel/kcov.c:246
       const_folio_flags.constprop.0+0x36/0x70 include/linux/page-flags.h:310
       folio_test_head include/linux/page-flags.h:829 [inline]
       folio_test_large include/linux/page-flags.h:850 [inline]
       folio_nr_pages include/linux/mm.h:2059 [inline]
       finish_fault+0x2c4/0x1010 mm/memory.c:5218
       do_read_fault mm/memory.c:5407 [inline]
       do_fault mm/memory.c:5537 [inline]
       do_pte_missing+0xef8/0x3e10 mm/memory.c:4058
       handle_pte_fault mm/memory.c:5900 [inline]
       __handle_mm_fault+0x1166/0x2c60 mm/memory.c:6043
       handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6212
       faultin_page mm/gup.c:1196 [inline]
       __get_user_pages+0x773/0x36f0 mm/gup.c:1491
       __get_user_pages_locked mm/gup.c:1757 [inline]
       get_dump_page+0xff/0x230 mm/gup.c:2275
       dump_user_range+0x135/0x8c0 fs/coredump.c:943
       elf_core_dump+0x287c/0x3a50 fs/binfmt_elf.c:2129
       do_coredump+0x3134/0x4400 fs/coredump.c:758
       get_signal+0x230b/0x26c0 kernel/signal.c:3021
       arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
       exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
       exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
       irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
       asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

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 ***

5 locks held by syz.1.42/6148:
 #0: ffff88807dad4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x230b/0x26c0 kernel/signal.c:3021
 #1: ffff88807bca81e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock_killable include/linux/mmap_lock.h:199 [inline]
 #1: ffff88807bca81e0 (&mm->mmap_lock){++++}-{4:4}, at: __get_user_pages_locked mm/gup.c:1732 [inline]
 #1: ffff88807bca81e0 (&mm->mmap_lock){++++}-{4:4}, at: get_dump_page+0xb6/0x230 mm/gup.c:2275
 #2: ffff8880b863ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline]
 #2: ffff8880b863ed58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:591
 #3: ffffffff8e1aa580 (console_lock){+.+.}-{0:0}, at: _printk+0xc8/0x100 kernel/printk/printk.c:2457
 #4: ffffffff8e1aa5f0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:342 [inline]
 #4: ffffffff8e1aa5f0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:304 [inline]
 #4: ffffffff8e1aa5f0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
 #4: ffffffff8e1aa5f0 (console_srcu){....}-{0:0}, at: console_flush_all+0x159/0xc60 kernel/printk/printk.c:3187

stack backtrace:
CPU: 0 UID: 0 PID: 6148 Comm: syz.1.42 Not tainted 6.14.0-rc3-syzkaller-00180-ga3daad821514 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_circular_bug+0x490/0x760 kernel/locking/lockdep.c:2076
 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2208
 check_prev_add kernel/locking/lockdep.c:3163 [inline]
 check_prevs_add kernel/locking/lockdep.c:3282 [inline]
 validate_chain kernel/locking/lockdep.c:3906 [inline]
 __lock_acquire+0x249e/0x3c40 kernel/locking/lockdep.c:5228
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
 console_lock_spinning_enable+0xb0/0xd0 kernel/printk/printk.c:1924
 console_emit_next_record kernel/printk/printk.c:3116 [inline]
 console_flush_all+0x7ac/0xc60 kernel/printk/printk.c:3210
 __console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
 console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
 vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
 _printk+0xc8/0x100 kernel/printk/printk.c:2457
 __report_bug lib/bug.c:195 [inline]
 report_bug+0x433/0x580 lib/bug.c:219
 handle_bug+0x54/0xa0 arch/x86/kernel/traps.c:285
 exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:309
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1512 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1510 [inline]
RIP: 0010:update_rq_clock+0xe4/0xaf0 kernel/sched/core.c:798
Code: 02 84 c0 74 08 3c 03 0f 8e 5f 03 00 00 f6 83 30 0b 00 00 02 74 19 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 90 <0f> 0b 90 eb b6 4c 8d a3 d8 0b 00 00 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000488ebc8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b873ed40 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6cefa0 RDI: ffffffff8bd345c0
RBP: ffffffff9062a614 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffff88801d2a5a00 R14: ffff8880b873ed40 R15: ffff8880b863f848
 pick_next_task kernel/sched/core.c:6221 [inline]
 __schedule+0x24c4/0x5890 kernel/sched/core.c:6717
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7087
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:write_comp_data+0x42/0x90 kernel/kcov.c:246
Code: a9 00 01 ff 00 74 1d f6 c4 01 74 67 a9 00 00 0f 00 75 60 a9 00 00 f0 00 75 59 8b 82 2c 16 00 00 85 c0 74 4f 8b 82 08 16 00 00 <83> f8 03 75 44 48 8b 82 10 16 00 00 8b 92 0c 16 00 00 48 8b 38 48
RSP: 0018:ffffc9000488ee80 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffea0001438ec0 RCX: ffffffff8201f496
RDX: ffff888025150000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: ffffc9000488f090
R13: ffff88807d9cd400 R14: ffffc9000488f0a8 R15: ffff88807d9cd3e0
 const_folio_flags.constprop.0+0x36/0x70 include/linux/page-flags.h:310
 folio_test_head include/linux/page-flags.h:829 [inline]
 folio_test_large include/linux/page-flags.h:850 [inline]
 folio_nr_pages include/linux/mm.h:2059 [inline]
 finish_fault+0x2c4/0x1010 mm/memory.c:5218
 do_read_fault mm/memory.c:5407 [inline]
 do_fault mm/memory.c:5537 [inline]
 do_pte_missing+0xef8/0x3e10 mm/memory.c:4058
 handle_pte_fault mm/memory.c:5900 [inline]
 __handle_mm_fault+0x1166/0x2c60 mm/memory.c:6043
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6212
 faultin_page mm/gup.c:1196 [inline]
 __get_user_pages+0x773/0x36f0 mm/gup.c:1491
 __get_user_pages_locked mm/gup.c:1757 [inline]
 get_dump_page+0xff/0x230 mm/gup.c:2275
 dump_user_range+0x135/0x8c0 fs/coredump.c:943
 elf_core_dump+0x287c/0x3a50 fs/binfmt_elf.c:2129
 do_coredump+0x3134/0x4400 fs/coredump.c:758
 get_signal+0x230b/0x26c0 kernel/signal.c:3021
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000400000000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff1c6ba6080 RCX: 00007ff1c698d169
RDX: 0000000000000000 RSI: 0000400000000000 RDI: 0000000040100000
RBP: 00007ff1c6a0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff1c6ba6080 R15: 00007ffc40553c88
 </TASK>
WARNING: CPU: 0 PID: 6148 at kernel/sched/sched.h:1512 lockdep_assert_rq_held kernel/sched/sched.h:1512 [inline]
WARNING: CPU: 0 PID: 6148 at kernel/sched/sched.h:1512 lockdep_assert_rq_held kernel/sched/sched.h:1510 [inline]
WARNING: CPU: 0 PID: 6148 at kernel/sched/sched.h:1512 update_rq_clock+0xe4/0xaf0 kernel/sched/core.c:798
Modules linked in:
CPU: 0 UID: 0 PID: 6148 Comm: syz.1.42 Not tainted 6.14.0-rc3-syzkaller-00180-ga3daad821514 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1512 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1510 [inline]
RIP: 0010:update_rq_clock+0xe4/0xaf0 kernel/sched/core.c:798
Code: 02 84 c0 74 08 3c 03 0f 8e 5f 03 00 00 f6 83 30 0b 00 00 02 74 19 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 90 <0f> 0b 90 eb b6 4c 8d a3 d8 0b 00 00 48 b8 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000488ebc8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b873ed40 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6cefa0 RDI: ffffffff8bd345c0
RBP: ffffffff9062a614 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffff88801d2a5a00 R14: ffff8880b873ed40 R15: ffff8880b863f848
FS:  00007ff1c78766c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001c37000 CR3: 0000000075d7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pick_next_task kernel/sched/core.c:6221 [inline]
 __schedule+0x24c4/0x5890 kernel/sched/core.c:6717
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7087
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:write_comp_data+0x42/0x90 kernel/kcov.c:246
Code: a9 00 01 ff 00 74 1d f6 c4 01 74 67 a9 00 00 0f 00 75 60 a9 00 00 f0 00 75 59 8b 82 2c 16 00 00 85 c0 74 4f 8b 82 08 16 00 00 <83> f8 03 75 44 48 8b 82 10 16 00 00 8b 92 0c 16 00 00 48 8b 38 48
RSP: 0018:ffffc9000488ee80 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffea0001438ec0 RCX: ffffffff8201f496
RDX: ffff888025150000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: ffffc9000488f090
R13: ffff88807d9cd400 R14: ffffc9000488f0a8 R15: ffff88807d9cd3e0
 const_folio_flags.constprop.0+0x36/0x70 include/linux/page-flags.h:310
 folio_test_head include/linux/page-flags.h:829 [inline]
 folio_test_large include/linux/page-flags.h:850 [inline]
 folio_nr_pages include/linux/mm.h:2059 [inline]
 finish_fault+0x2c4/0x1010 mm/memory.c:5218
 do_read_fault mm/memory.c:5407 [inline]
 do_fault mm/memory.c:5537 [inline]
 do_pte_missing+0xef8/0x3e10 mm/memory.c:4058
 handle_pte_fault mm/memory.c:5900 [inline]
 __handle_mm_fault+0x1166/0x2c60 mm/memory.c:6043
 handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6212
 faultin_page mm/gup.c:1196 [inline]
 __get_user_pages+0x773/0x36f0 mm/gup.c:1491
 __get_user_pages_locked mm/gup.c:1757 [inline]
 get_dump_page+0xff/0x230 mm/gup.c:2275
 dump_user_range+0x135/0x8c0 fs/coredump.c:943
 elf_core_dump+0x287c/0x3a50 fs/binfmt_elf.c:2129
 do_coredump+0x3134/0x4400 fs/coredump.c:758
 get_signal+0x230b/0x26c0 kernel/signal.c:3021
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 002b:0000400000000008 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff1c6ba6080 RCX: 00007ff1c698d169
RDX: 0000000000000000 RSI: 0000400000000000 RDI: 0000000040100000
RBP: 00007ff1c6a0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff1c6ba6080 R15: 00007ffc40553c88
 </TASK>
----------------
Code disassembly (best guess):
   0:	a9 00 01 ff 00       	test   $0xff0100,%eax
   5:	74 1d                	je     0x24
   7:	f6 c4 01             	test   $0x1,%ah
   a:	74 67                	je     0x73
   c:	a9 00 00 0f 00       	test   $0xf0000,%eax
  11:	75 60                	jne    0x73
  13:	a9 00 00 f0 00       	test   $0xf00000,%eax
  18:	75 59                	jne    0x73
  1a:	8b 82 2c 16 00 00    	mov    0x162c(%rdx),%eax
  20:	85 c0                	test   %eax,%eax
  22:	74 4f                	je     0x73
  24:	8b 82 08 16 00 00    	mov    0x1608(%rdx),%eax
* 2a:	83 f8 03             	cmp    $0x3,%eax <-- trapping instruction
  2d:	75 44                	jne    0x73
  2f:	48 8b 82 10 16 00 00 	mov    0x1610(%rdx),%rax
  36:	8b 92 0c 16 00 00    	mov    0x160c(%rdx),%edx
  3c:	48 8b 38             	mov    (%rax),%rdi
  3f:	48                   	rex.W