------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Tainted: G I L
------------------------------------------------------
syz.3.1823/14678 is trying to acquire lock:
ffffffff8e4eeee0 (console_owner){-.-.}-{0:0}, at: console_lock_spinning_enable+0x61/0x80 kernel/printk/printk.c:1900
but task is already holding lock:
ffff8880b843add8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:647 [inline]
ffff8880b843add8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:632
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:639
raw_spin_rq_lock kernel/sched/sched.h:1580 [inline]
task_rq_lock+0xcf/0x490 kernel/sched/core.c:739
cgroup_move_task+0x81/0x2a0 kernel/sched/psi.c:1170
css_set_move_task+0x285/0x600 kernel/cgroup/cgroup.c:948
cgroup_post_fork+0x1fe/0x9b0 kernel/cgroup/cgroup.c:6910
copy_process+0x57b0/0x7890 kernel/fork.c:2465
kernel_clone+0xfc/0x930 kernel/fork.c:2651
user_mode_thread+0xcc/0x110 kernel/fork.c:2727
rest_init+0x21/0x260 init/main.c:722
start_kernel+0x47a/0x480 init/main.c:1206
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x122/0x130 arch/x86/kernel/head64.c:291
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:557 [inline]
try_to_wake_up+0xb2/0x1a60 kernel/sched/core.c:4106
__wake_up_common+0x135/0x1f0 kernel/sched/wait.c:108
__wake_up_common_lock kernel/sched/wait.c:125 [inline]
__wake_up+0x31/0x60 kernel/sched/wait.c:146
tty_port_default_wakeup+0x47/0x60 drivers/tty/tty_port.c:67
serial8250_tx_chars+0x68f/0x860 drivers/tty/serial/8250/8250_port.c:1719
serial8250_handle_irq+0x73e/0xcb0 drivers/tty/serial/8250/8250_port.c:1827
serial8250_default_handle_irq+0x9e/0x270 drivers/tty/serial/8250/8250_port.c:1846
serial8250_interrupt+0xf8/0x1d0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x232/0x800 kernel/irq/handle.c:211
handle_irq_event_percpu kernel/irq/handle.c:248 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:265
handle_edge_irq+0x375/0x970 kernel/irq/chip.c:855
generic_handle_irq_desc include/linux/irqdesc.h:172 [inline]
handle_irq arch/x86/kernel/irq.c:255 [inline]
call_irq_handler arch/x86/kernel/irq.c:311 [inline]
__common_interrupt+0xd8/0x2f0 arch/x86/kernel/irq.c:326
common_interrupt+0xb9/0xe0 arch/x86/kernel/irq.c:319
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688
vfs_writev+0x0/0xe10 include/linux/dcache.h:534
do_writev+0x28a/0x340 fs/read_write.c:1103
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
-> #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:124 [inline]
__wake_up+0x1c/0x60 kernel/sched/wait.c:146
tty_port_default_wakeup+0x47/0x60 drivers/tty/tty_port.c:67
serial8250_tx_chars+0x68f/0x860 drivers/tty/serial/8250/8250_port.c:1719
serial8250_handle_irq+0x73e/0xcb0 drivers/tty/serial/8250/8250_port.c:1827
serial8250_default_handle_irq+0x9e/0x270 drivers/tty/serial/8250/8250_port.c:1846
serial8250_interrupt+0xf8/0x1d0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x232/0x800 kernel/irq/handle.c:211
handle_irq_event_percpu kernel/irq/handle.c:248 [inline]
handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:265
handle_edge_irq+0x375/0x970 kernel/irq/chip.c:855
generic_handle_irq_desc include/linux/irqdesc.h:172 [inline]
handle_irq arch/x86/kernel/irq.c:255 [inline]
call_irq_handler arch/x86/kernel/irq.c:311 [inline]
__common_interrupt+0xd8/0x2f0 arch/x86/kernel/irq.c:326
common_interrupt+0xb9/0xe0 arch/x86/kernel/irq.c:319
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:688
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:81
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x9/0x10 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x35b/0x4b0 kernel/sched/idle.c:332
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
rest_init+0x251/0x260 init/main.c:757
start_kernel+0x47a/0x480 init/main.c:1206
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x122/0x130 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
-> #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:717 [inline]
serial8250_console_write+0x17e/0x1900 drivers/tty/serial/8250/8250_port.c:3301
console_emit_next_record kernel/printk/printk.c:3129 [inline]
console_flush_one_record+0x790/0xe50 kernel/printk/printk.c:3215
console_flush_all kernel/printk/printk.c:3289 [inline]
__console_flush_and_unlock kernel/printk/printk.c:3319 [inline]
console_unlock+0x103/0x260 kernel/printk/printk.c:3359
vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2426
_printk+0xcf/0x110 kernel/printk/printk.c:2451
register_console.cold+0xc0/0x248 kernel/printk/printk.c:4170
univ8250_console_init+0x6f/0x80 drivers/tty/serial/8250/8250_core.c:515
console_init+0x371/0x520 kernel/printk/printk.c:4369
start_kernel+0x300/0x480 init/main.c:1143
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x122/0x130 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
-> #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 kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x14b8/0x2630 kernel/locking/lockdep.c:5237
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x17c/0x330 kernel/locking/lockdep.c:5825
console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1900
console_emit_next_record kernel/printk/printk.c:3123 [inline]
console_flush_one_record+0x739/0xe50 kernel/printk/printk.c:3215
console_flush_all kernel/printk/printk.c:3289 [inline]
__console_flush_and_unlock kernel/printk/printk.c:3319 [inline]
console_unlock+0x103/0x260 kernel/printk/printk.c:3359
vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2426
_printk+0xcf/0x110 kernel/printk/printk.c:2451
__report_bug.cold+0x15/0x137 lib/bug.c:243
report_bug+0xb2/0x220 lib/bug.c:281
handle_bug+0x166/0x2a0 arch/x86/kernel/traps.c:435
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:489
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
lockdep_assert_rq_held kernel/sched/sched.h:1571 [inline]
lockdep_assert_rq_held kernel/sched/sched.h:1569 [inline]
update_rq_clock+0x34a/0xd30 kernel/sched/core.c:837
pick_next_task kernel/sched/core.c:6092 [inline]
__schedule+0x1b0d/0x5e10 kernel/sched/core.c:6809
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7194
irqentry_exit+0x17b/0x670 kernel/entry/common.c:216
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
__sanitizer_cov_trace_pc+0x0/0x70 include/linux/refcount.h:400
pmd_pfn_mask arch/x86/include/asm/pgtable_types.h:453 [inline]
pmd_flags_mask arch/x86/include/asm/pgtable_types.h:461 [inline]
pmd_flags arch/x86/include/asm/pgtable_types.h:466 [inline]
pmd_present arch/x86/include/asm/pgtable.h:992 [inline]
___pte_offset_map+0xca/0x310 mm/pgtable-generic.c:295
__pte_offset_map include/linux/mm.h:3350 [inline]
__pte_offset_map_lock+0x8d/0x320 mm/pgtable-generic.c:399
pte_offset_map_lock include/linux/mm.h:3365 [inline]
follow_page_pte+0xab/0x1410 mm/gup.c:812
follow_pmd_mask mm/gup.c:928 [inline]
follow_pud_mask mm/gup.c:967 [inline]
follow_p4d_mask mm/gup.c:984 [inline]
follow_page_mask mm/gup.c:1023 [inline]
__get_user_pages+0x745/0x34d0 mm/gup.c:1426
__get_user_pages_locked mm/gup.c:1692 [inline]
get_dump_page+0x27e/0x3d0 mm/gup.c:2192
dump_user_range+0x18d/0xb50 fs/coredump.c:1366
elf_core_dump+0x2d16/0x3c60 fs/binfmt_elf.c:2111
coredump_write fs/coredump.c:1049 [inline]
do_coredump fs/coredump.c:1126 [inline]
vfs_coredump+0x276c/0x5530 fs/coredump.c:1200
get_signal+0x1f2a/0x21e0 kernel/signal.c:3019
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:196
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
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.3.1823/14678:
#0: ffff88807ba34420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x1f2a/0x21e0 kernel/signal.c:3019
#1: ffff88803248a800 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock_killable include/linux/mmap_lock.h:400 [inline]
#1: ffff88803248a800 (&mm->mmap_lock){++++}-{4:4}, at: dump_user_range+0x151/0xb50 fs/coredump.c:1354
#2: ffffffff8e5e3120 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8e5e3120 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#2: ffffffff8e5e3120 (rcu_read_lock){....}-{1:3}, at: ___pte_offset_map+0x2f/0x310 mm/pgtable-generic.c:288
#3: ffff8880b843add8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:647 [inline]
#3: ffff8880b843add8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:632
#4: ffffffff8e5cf320 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x110 kernel/printk/printk.c:2451
#5: ffffffff8e5cf398 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
#5: ffffffff8e5cf398 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:409 [inline]
#5: ffffffff8e5cf398 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:289 [inline]
#5: ffffffff8e5cf398 (console_srcu){....}-{0:0}, at: console_flush_one_record+0xfd/0xe50 kernel/printk/printk.c:3192
stack backtrace:
CPU: 0 UID: 0 PID: 14678 Comm: syz.3.1823 Tainted: G I L syzkaller #0 PREEMPT(full)
Tainted: [I]=FIRMWARE_WORKAROUND, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
print_circular_bug.cold+0x178/0x1c7 kernel/locking/lockdep.c:2043
check_noncircular+0x146/0x160 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 kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x14b8/0x2630 kernel/locking/lockdep.c:5237
lock_acquire kernel/locking/lockdep.c:5868 [inline]
lock_acquire+0x17c/0x330 kernel/locking/lockdep.c:5825
console_lock_spinning_enable+0x72/0x80 kernel/printk/printk.c:1900
console_emit_next_record kernel/printk/printk.c:3123 [inline]
console_flush_one_record+0x739/0xe50 kernel/printk/printk.c:3215
console_flush_all kernel/printk/printk.c:3289 [inline]
__console_flush_and_unlock kernel/printk/printk.c:3319 [inline]
console_unlock+0x103/0x260 kernel/printk/printk.c:3359
vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2426
_printk+0xcf/0x110 kernel/printk/printk.c:2451
__report_bug.cold+0x15/0x137 lib/bug.c:243
report_bug+0xb2/0x220 lib/bug.c:281
handle_bug+0x166/0x2a0 arch/x86/kernel/traps.c:435
exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:489
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1571 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1569 [inline]
RIP: 0010:update_rq_clock+0x34a/0xd30 kernel/sched/core.c:837
Code: ab 48 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 c8 eb a2 09 a8 04 0f 84 9e fd ff ff 90 0f 0b 90 e9 95 fd ff ff 90 <0f> 0b 90 e9 51 fd ff ff 48 8d bb 18 0e 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000ba96ac0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b853adc0 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ffffffff8dc1b3c0 RDI: ffffffff8bfa32a0
RBP: ffffc9000ba96c68 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90b771d7 R11: 0000000000000000 R12: ffffffff90b7a254
R13: ffff8880b853bbf0 R14: ffff88801e28bd00 R15: ffff8880b853adc0
pick_next_task kernel/sched/core.c:6092 [inline]
__schedule+0x1b0d/0x5e10 kernel/sched/core.c:6809
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7194
irqentry_exit+0x17b/0x670 kernel/entry/common.c:216
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 86 0c 58 00 48 89 df 5b e9 6d 7f 5d 00 be 03 00 00 00 5b e9 52 94 de 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 a5 85 dd 11 48 8b 34 24 65 48 8b 15 81 85 dd
RSP: 0018:ffffc9000ba96d78 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 00007f289f477000 RCX: ffffffff825a47cc
RDX: 0000000035099007 RSI: 0000000000000000 RDI: ffff88802f6e9e80
RBP: 0000000035099067 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000035099007 R11: 0000000000000000 R12: 0000000035099007
R13: ffff8880289a47d0 R14: ffffc9000ba96ea0 R15: 1ffff92001752dd0
pmd_pfn_mask arch/x86/include/asm/pgtable_types.h:453 [inline]
pmd_flags_mask arch/x86/include/asm/pgtable_types.h:461 [inline]
pmd_flags arch/x86/include/asm/pgtable_types.h:466 [inline]
pmd_present arch/x86/include/asm/pgtable.h:992 [inline]
___pte_offset_map+0xca/0x310 mm/pgtable-generic.c:295
__pte_offset_map include/linux/mm.h:3350 [inline]
__pte_offset_map_lock+0x8d/0x320 mm/pgtable-generic.c:399
pte_offset_map_lock include/linux/mm.h:3365 [inline]
follow_page_pte+0xab/0x1410 mm/gup.c:812
follow_pmd_mask mm/gup.c:928 [inline]
follow_pud_mask mm/gup.c:967 [inline]
follow_p4d_mask mm/gup.c:984 [inline]
follow_page_mask mm/gup.c:1023 [inline]
__get_user_pages+0x745/0x34d0 mm/gup.c:1426
__get_user_pages_locked mm/gup.c:1692 [inline]
get_dump_page+0x27e/0x3d0 mm/gup.c:2192
dump_user_range+0x18d/0xb50 fs/coredump.c:1366
elf_core_dump+0x2d16/0x3c60 fs/binfmt_elf.c:2111
coredump_write fs/coredump.c:1049 [inline]
do_coredump fs/coredump.c:1126 [inline]
vfs_coredump+0x276c/0x5530 fs/coredump.c:1200
get_signal+0x1f2a/0x21e0 kernel/signal.c:3019
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:196
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x20
Code: Unable to access opcode bytes at 0xfffffffffffffff6.
RSP: 002b:000000000000000b EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f28a0815fa0 RCX: 00007f28a059acb9
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000200000000400
RBP: 00007f28a0608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f28a0816038 R14: 00007f28a0815fa0 R15: 00007ffdd0dd09d8
debug_locks && !(lock_is_held(&(__rq_lockp(rq))->dep_map) != 0)
WARNING: kernel/sched/sched.h:1571 at lockdep_assert_rq_held kernel/sched/sched.h:1571 [inline], CPU#0: syz.3.1823/14678
WARNING: kernel/sched/sched.h:1571 at lockdep_assert_rq_held kernel/sched/sched.h:1569 [inline], CPU#0: syz.3.1823/14678
WARNING: kernel/sched/sched.h:1571 at update_rq_clock+0x34a/0xd30 kernel/sched/core.c:837, CPU#0: syz.3.1823/14678
Modules linked in:
CPU: 0 UID: 0 PID: 14678 Comm: syz.3.1823 Tainted: G I L syzkaller #0 PREEMPT(full)
Tainted: [I]=FIRMWARE_WORKAROUND, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1571 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1569 [inline]
RIP: 0010:update_rq_clock+0x34a/0xd30 kernel/sched/core.c:837
Code: ab 48 0b 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f e9 c8 eb a2 09 a8 04 0f 84 9e fd ff ff 90 0f 0b 90 e9 95 fd ff ff 90 <0f> 0b 90 e9 51 fd ff ff 48 8d bb 18 0e 00 00 48 b8 00 00 00 00 00
RSP: 0018:ffffc9000ba96ac0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880b853adc0 RCX: 0000000000000001
RDX: 0000000000000046 RSI: ffffffff8dc1b3c0 RDI: ffffffff8bfa32a0
RBP: ffffc9000ba96c68 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90b771d7 R11: 0000000000000000 R12: ffffffff90b7a254
R13: ffff8880b853bbf0 R14: ffff88801e28bd00 R15: ffff8880b853adc0
FS: 00007f28a14196c0(0000) GS:ffff8881245e3000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f78ec9f9b94 CR3: 0000000028e60000 CR4: 00000000003526f0
Call Trace:
pick_next_task kernel/sched/core.c:6092 [inline]
__schedule+0x1b0d/0x5e10 kernel/sched/core.c:6809
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7194
irqentry_exit+0x17b/0x670 kernel/entry/common.c:216
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 86 0c 58 00 48 89 df 5b e9 6d 7f 5d 00 be 03 00 00 00 5b e9 52 94 de 02 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 a5 85 dd 11 48 8b 34 24 65 48 8b 15 81 85 dd
RSP: 0018:ffffc9000ba96d78 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 00007f289f477000 RCX: ffffffff825a47cc
RDX: 0000000035099007 RSI: 0000000000000000 RDI: ffff88802f6e9e80
RBP: 0000000035099067 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000035099007 R11: 0000000000000000 R12: 0000000035099007
R13: ffff8880289a47d0 R14: ffffc9000ba96ea0 R15: 1ffff92001752dd0
pmd_pfn_mask arch/x86/include/asm/pgtable_types.h:453 [inline]
pmd_flags_mask arch/x86/include/asm/pgtable_types.h:461 [inline]
pmd_flags arch/x86/include/asm/pgtable_types.h:466 [inline]
pmd_present arch/x86/include/asm/pgtable.h:992 [inline]
___pte_offset_map+0xca/0x310 mm/pgtable-generic.c:295
__pte_offset_map include/linux/mm.h:3350 [inline]
__pte_offset_map_lock+0x8d/0x320 mm/pgtable-generic.c:399
pte_offset_map_lock include/linux/mm.h:3365 [inline]
follow_page_pte+0xab/0x1410 mm/gup.c:812
follow_pmd_mask mm/gup.c:928 [inline]
follow_pud_mask mm/gup.c:967 [inline]
follow_p4d_mask mm/gup.c:984 [inline]
follow_page_mask mm/gup.c:1023 [inline]
__get_user_pages+0x745/0x34d0 mm/gup.c:1426
__get_user_pages_locked mm/gup.c:1692 [inline]
get_dump_page+0x27e/0x3d0 mm/gup.c:2192
dump_user_range+0x18d/0xb50 fs/coredump.c:1366
elf_core_dump+0x2d16/0x3c60 fs/binfmt_elf.c:2111
coredump_write fs/coredump.c:1049 [inline]
do_coredump fs/coredump.c:1126 [inline]
vfs_coredump+0x276c/0x5530 fs/coredump.c:1200
get_signal+0x1f2a/0x21e0 kernel/signal.c:3019
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
exit_to_user_mode_loop kernel/entry/common.c:75 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:196
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x20
Code: Unable to access opcode bytes at 0xfffffffffffffff6.
RSP: 002b:000000000000000b EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f28a0815fa0 RCX: 00007f28a059acb9
RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000200000000400
RBP: 00007f28a0608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f28a0816038 R14: 00007f28a0815fa0 R15: 00007ffdd0dd09d8
----------------
Code disassembly (best guess):
0: 86 0c 58 xchg %cl,(%rax,%rbx,2)
3: 00 48 89 add %cl,-0x77(%rax)
6: df 5b e9 fistps -0x17(%rbx)
9: 6d insl (%dx),%es:(%rdi)
a: 7f 5d jg 0x69
c: 00 be 03 00 00 00 add %bh,0x3(%rsi)
12: 5b pop %rbx
13: e9 52 94 de 02 jmp 0x2de946a
18: 66 90 xchg %ax,%ax
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 90 nop
23: 90 nop
24: 90 nop
25: 90 nop
26: 90 nop
27: 90 nop
28: 90 nop
29: 90 nop
* 2a: f3 0f 1e fa endbr64 <-- trapping instruction
2e: 65 8b 05 a5 85 dd 11 mov %gs:0x11dd85a5(%rip),%eax # 0x11dd85da
35: 48 8b 34 24 mov (%rsp),%rsi
39: 65 gs
3a: 48 rex.W
3b: 8b .byte 0x8b
3c: 15 .byte 0x15
3d: 81 .byte 0x81
3e: 85 dd test %ebx,%ebp