FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
6.16.0-syzkaller #0 Not tainted
------------------------------------------------------
syz.0.371/7391 is trying to acquire lock:
ffffffff8e133300 (console_owner){-...}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
ffffffff8e133300 (console_owner){-...}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
ffffffff8e133300 (console_owner){-...}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
ffffffff8e133300 (console_owner){-...}-{0:0}, at: console_flush_all+0x13a/0xc40 kernel/printk/printk.c:3203
but task is already holding lock:
ffff8880b8639e18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&rq->__lock){-.-.}-{2:2}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
_raw_spin_lock_nested+0x32/0x50 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
raw_spin_rq_lock kernel/sched/sched.h:1532 [inline]
task_rq_lock+0xbc/0x470 kernel/sched/core.c:708
cgroup_move_task+0x9a/0x590 kernel/sched/psi.c:1161
css_set_move_task+0x658/0x9e0 kernel/cgroup/cgroup.c:918
cgroup_post_fork+0x1ef/0x790 kernel/cgroup/cgroup.c:6754
copy_process+0x37e6/0x3b80 kernel/fork.c:2413
kernel_clone+0x224/0x7f0 kernel/fork.c:2599
user_mode_thread+0xdd/0x140 kernel/fork.c:2677
rest_init+0x23/0x300 init/main.c:710
start_kernel+0x47d/0x500 init/main.c:1102
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
-> #3 (&p->pi_lock){-.-.}-{2:2}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
__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+0x6e/0x1290 kernel/sched/core.c:4227
__wake_up_common kernel/sched/wait.c:89 [inline]
__wake_up_common_lock+0x137/0x1f0 kernel/sched/wait.c:106
tty_port_default_wakeup+0xa2/0xf0 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x72e/0x970 drivers/tty/serial/8250/8250_port.c:1838
serial8250_handle_irq+0x633/0xbb0 drivers/tty/serial/8250/8250_port.c:1946
serial8250_default_handle_irq+0xbf/0x1b0 drivers/tty/serial/8250/8250_port.c:1966
serial8250_interrupt+0xa2/0x1d0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x289/0x980 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x8b/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x267/0x9c0 kernel/irq/chip.c:797
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:254 [inline]
call_irq_handler arch/x86/kernel/irq.c:266 [inline]
__common_interrupt+0x140/0x250 arch/x86/kernel/irq.c:292
common_interrupt+0xb6/0xe0 arch/x86/kernel/irq.c:285
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
get_current arch/x86/include/asm/current.h:25 [inline]
__sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:216
__set_page_owner+0x12c/0x4a0 mm/page_owner.c:333
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510
folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2520
filemap_alloc_folio_noprof+0xdf/0x470 mm/filemap.c:1007
__filemap_get_folio+0x3f2/0xaf0 mm/filemap.c:1980
ext4_mb_get_buddy_page_lock fs/ext4/mballoc.c:1483 [inline]
ext4_mb_init_group+0x2cb/0x6a0 fs/ext4/mballoc.c:1533
ext4_mb_prefetch_fini+0x14d/0x1e0 fs/ext4/mballoc.c:2790
ext4_run_li_request fs/ext4/super.c:3685 [inline]
ext4_lazyinit_thread+0x57f/0x1880 fs/ext4/super.c:3811
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #2 (&tty->write_wait){-.-.}-{3:3}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
__wake_up_common_lock+0x2f/0x1f0 kernel/sched/wait.c:105
tty_port_default_wakeup+0xa2/0xf0 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x72e/0x970 drivers/tty/serial/8250/8250_port.c:1838
serial8250_handle_irq+0x633/0xbb0 drivers/tty/serial/8250/8250_port.c:1946
serial8250_default_handle_irq+0xbf/0x1b0 drivers/tty/serial/8250/8250_port.c:1966
serial8250_interrupt+0xa2/0x1d0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x289/0x980 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x8b/0x1e0 kernel/irq/handle.c:210
handle_edge_irq+0x267/0x9c0 kernel/irq/chip.c:797
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:254 [inline]
call_irq_handler arch/x86/kernel/irq.c:266 [inline]
__common_interrupt+0x140/0x250 arch/x86/kernel/irq.c:292
common_interrupt+0xb6/0xe0 arch/x86/kernel/irq.c:285
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
get_current arch/x86/include/asm/current.h:25 [inline]
__sanitizer_cov_trace_pc+0x11/0x70 kernel/kcov.c:216
__set_page_owner+0x12c/0x4a0 mm/page_owner.c:333
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
prep_new_page mm/page_alloc.c:1712 [inline]
get_page_from_freelist+0x21d5/0x22b0 mm/page_alloc.c:3669
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510
folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2520
filemap_alloc_folio_noprof+0xdf/0x470 mm/filemap.c:1007
__filemap_get_folio+0x3f2/0xaf0 mm/filemap.c:1980
ext4_mb_get_buddy_page_lock fs/ext4/mballoc.c:1483 [inline]
ext4_mb_init_group+0x2cb/0x6a0 fs/ext4/mballoc.c:1533
ext4_mb_prefetch_fini+0x14d/0x1e0 fs/ext4/mballoc.c:2790
ext4_run_li_request fs/ext4/super.c:3685 [inline]
ext4_lazyinit_thread+0x57f/0x1880 fs/ext4/super.c:3811
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
-> #1 (&port_lock_key){-.-.}-{3:3}:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
__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:3415
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+0x52/0x90 drivers/tty/serial/8250/8250_core.c:513
console_init+0x1a1/0x670 kernel/printk/printk.c:4323
start_kernel+0x2cc/0x500 init/main.c:1036
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:3168 [inline]
check_prevs_add kernel/locking/lockdep.c:3287 [inline]
validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911
__lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
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:193
bpf_trace_copy_string kernel/bpf/helpers.c:754 [inline]
bpf_bprintf_prepare+0xb9b/0x1410 kernel/bpf/helpers.c:979
____bpf_trace_printk kernel/trace/bpf_trace.c:373 [inline]
bpf_trace_printk+0xdb/0x190 kernel/trace/bpf_trace.c:363
bpf_prog_7c77c7e0f6645ad8+0x3e/0x44
bpf_dispatcher_nop_func include/linux/bpf.h:1322 [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:2258 [inline]
bpf_trace_run2+0x284/0x4b0 kernel/trace/bpf_trace.c:2299
__bpf_trace_contention_begin+0xdc/0x130 include/trace/events/lock.h:95
__traceiter_contention_begin+0x77/0xb0 include/trace/events/lock.h:95
__do_trace_contention_begin include/trace/events/lock.h:95 [inline]
trace_contention_begin+0x114/0x140 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xf0/0xb60 kernel/locking/qspinlock.c:219
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline]
queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x21f/0x290 kernel/locking/spinlock_debug.c:116
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
raw_spin_rq_lock kernel/sched/sched.h:1532 [inline]
rq_lock kernel/sched/sched.h:1856 [inline]
__schedule+0x330/0x4c90 kernel/sched/core.c:6710
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7109
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
mas_next_slot+0x1db/0xcf0 lib/maple_tree.c:-1
mas_find+0x9e7/0xc10 lib/maple_tree.c:6048
vma_next include/linux/mm.h:864 [inline]
validate_mm+0xe1/0x4b0 mm/vma.c:649
__split_vma+0x8bd/0xa00 mm/vma.c:566
vms_gather_munmap_vmas+0x2de/0x12b0 mm/vma.c:1354
__mmap_prepare mm/vma.c:2351 [inline]
__mmap_region mm/vma.c:2607 [inline]
mmap_region+0x678/0x1f30 mm/vma.c:2692
do_mmap+0xc45/0x10d0 mm/mmap.c:561
vm_mmap_pgoff+0x31b/0x4c0 mm/util.c:579
ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:607
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 ***
5 locks held by syz.0.371/7391:
#0: ffff8880299ae5e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:374 [inline]
#0: ffff8880299ae5e0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1bd/0x4c0 mm/util.c:577
#1: ffff8880b8639e18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
#2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline]
#2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x186/0x4b0 kernel/trace/bpf_trace.c:2299
#3: ffffffff8e133360 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x120 kernel/printk/printk.c:2475
#4: ffffffff8e01ac30 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
#4: ffffffff8e01ac30 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
#4: ffffffff8e01ac30 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
#4: ffffffff8e01ac30 (console_srcu){....}-{0:0}, at: console_flush_all+0x13a/0xc40 kernel/printk/printk.c:3203
stack backtrace:
CPU: 0 UID: 0 PID: 7391 Comm: syz.0.371 Not tainted 6.16.0-syzkaller #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:2046
check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2178
check_prev_add kernel/locking/lockdep.c:3168 [inline]
check_prevs_add kernel/locking/lockdep.c:3287 [inline]
validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3911
__lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5240
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
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:193
bpf_trace_copy_string kernel/bpf/helpers.c:754 [inline]
bpf_bprintf_prepare+0xb9b/0x1410 kernel/bpf/helpers.c:979
____bpf_trace_printk kernel/trace/bpf_trace.c:373 [inline]
bpf_trace_printk+0xdb/0x190 kernel/trace/bpf_trace.c:363
bpf_prog_7c77c7e0f6645ad8+0x3e/0x44
bpf_dispatcher_nop_func include/linux/bpf.h:1322 [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:2258 [inline]
bpf_trace_run2+0x284/0x4b0 kernel/trace/bpf_trace.c:2299
__bpf_trace_contention_begin+0xdc/0x130 include/trace/events/lock.h:95
__traceiter_contention_begin+0x77/0xb0 include/trace/events/lock.h:95
__do_trace_contention_begin include/trace/events/lock.h:95 [inline]
trace_contention_begin+0x114/0x140 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xf0/0xb60 kernel/locking/qspinlock.c:219
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline]
queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x21f/0x290 kernel/locking/spinlock_debug.c:116
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
raw_spin_rq_lock kernel/sched/sched.h:1532 [inline]
rq_lock kernel/sched/sched.h:1856 [inline]
__schedule+0x330/0x4c90 kernel/sched/core.c:6710
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7109
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:mas_next_slot+0x1db/0xcf0 lib/maple_tree.c:-1
Code: 3c 20 00 74 08 4c 89 f7 e8 02 a0 c1 f6 49 8b 1e 48 89 df 4c 89 fe e8 14 bb 61 f6 4c 39 fb 73 0a e8 aa b8 61 f6 e9 c8 00 00 00 <48> 8b 44 24 48 42 0f b6 04 20 84 c0 0f 85 eb 04 00 00 48 8b 44 24
RSP: 0018:ffffc90003fcf1c8 EFLAGS: 00000246
RAX: ffffffff8b5e6d0c RBX: ffffffffffffffff RCX: ffff888033583c00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: 0000000000000001 R08: ffff888033583c00 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888031021200 R14: ffffc90003fcf388 R15: ffffffffffffffff
mas_find+0x9e7/0xc10 lib/maple_tree.c:6048
vma_next include/linux/mm.h:864 [inline]
validate_mm+0xe1/0x4b0 mm/vma.c:649
__split_vma+0x8bd/0xa00 mm/vma.c:566
vms_gather_munmap_vmas+0x2de/0x12b0 mm/vma.c:1354
__mmap_prepare mm/vma.c:2351 [inline]
__mmap_region mm/vma.c:2607 [inline]
mmap_region+0x678/0x1f30 mm/vma.c:2692
do_mmap+0xc45/0x10d0 mm/mmap.c:561
vm_mmap_pgoff+0x31b/0x4c0 mm/util.c:579
ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:607
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: 0033:0x7f6cf038ebe9
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:00007f6cf11d2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f6cf05b5fa0 RCX: 00007f6cf038ebe9
RDX: 0000000000000001 RSI: 0000000000004000 RDI: 0000200000ffc000
RBP: 00007f6cf11d2090 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f6cf05b6038 R14: 00007f6cf05b5fa0 R15: 00007ffdc35dce48
CPU: 0 UID: 0 PID: 7391 Comm: syz.0.371 Not tainted 6.16.0-syzkaller #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:193
bpf_trace_copy_string kernel/bpf/helpers.c:754 [inline]
bpf_bprintf_prepare+0xb9b/0x1410 kernel/bpf/helpers.c:979
____bpf_trace_printk kernel/trace/bpf_trace.c:373 [inline]
bpf_trace_printk+0xdb/0x190 kernel/trace/bpf_trace.c:363
bpf_prog_7c77c7e0f6645ad8+0x3e/0x44
bpf_dispatcher_nop_func include/linux/bpf.h:1322 [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:2258 [inline]
bpf_trace_run2+0x284/0x4b0 kernel/trace/bpf_trace.c:2299
__bpf_trace_contention_begin+0xdc/0x130 include/trace/events/lock.h:95
__traceiter_contention_begin+0x77/0xb0 include/trace/events/lock.h:95
__do_trace_contention_begin include/trace/events/lock.h:95 [inline]
trace_contention_begin+0x114/0x140 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xf0/0xb60 kernel/locking/qspinlock.c:219
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline]
queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x21f/0x290 kernel/locking/spinlock_debug.c:116
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
raw_spin_rq_lock kernel/sched/sched.h:1532 [inline]
rq_lock kernel/sched/sched.h:1856 [inline]
__schedule+0x330/0x4c90 kernel/sched/core.c:6710
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7109
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:mas_next_slot+0x1db/0xcf0 lib/maple_tree.c:-1
Code: 3c 20 00 74 08 4c 89 f7 e8 02 a0 c1 f6 49 8b 1e 48 89 df 4c 89 fe e8 14 bb 61 f6 4c 39 fb 73 0a e8 aa b8 61 f6 e9 c8 00 00 00 <48> 8b 44 24 48 42 0f b6 04 20 84 c0 0f 85 eb 04 00 00 48 8b 44 24
RSP: 0018:ffffc90003fcf1c8 EFLAGS: 00000246
RAX: ffffffff8b5e6d0c RBX: ffffffffffffffff RCX: ffff888033583c00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff
RBP: 0000000000000001 R08: ffff888033583c00 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888031021200 R14: ffffc90003fcf388 R15: ffffffffffffffff
mas_find+0x9e7/0xc10 lib/maple_tree.c:6048
vma_next include/linux/mm.h:864 [inline]
validate_mm+0xe1/0x4b0 mm/vma.c:649
__split_vma+0x8bd/0xa00 mm/vma.c:566
vms_gather_munmap_vmas+0x2de/0x12b0 mm/vma.c:1354
__mmap_prepare mm/vma.c:2351 [inline]
__mmap_region mm/vma.c:2607 [inline]
mmap_region+0x678/0x1f30 mm/vma.c:2692
do_mmap+0xc45/0x10d0 mm/mmap.c:561
vm_mmap_pgoff+0x31b/0x4c0 mm/util.c:579
ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:607
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: 0033:0x7f6cf038ebe9
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:00007f6cf11d2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f6cf05b5fa0 RCX: 00007f6cf038ebe9
RDX: 0000000000000001 RSI: 0000000000004000 RDI: 0000200000ffc000
RBP: 00007f6cf11d2090 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f6cf05b6038 R14: 00007f6cf05b5fa0 R15: 00007ffdc35dce48
binder_alloc: binder_alloc_mmap_handler: 7390 200000ffc000-200001000000 already mapped failed -16
syz.0.371 (7391) used greatest stack depth: 20008 bytes left
----------------
Code disassembly (best guess):
0: 3c 20 cmp $0x20,%al
2: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1)
6: 89 f7 mov %esi,%edi
8: e8 02 a0 c1 f6 call 0xf6c1a00f
d: 49 8b 1e mov (%r14),%rbx
10: 48 89 df mov %rbx,%rdi
13: 4c 89 fe mov %r15,%rsi
16: e8 14 bb 61 f6 call 0xf661bb2f
1b: 4c 39 fb cmp %r15,%rbx
1e: 73 0a jae 0x2a
20: e8 aa b8 61 f6 call 0xf661b8cf
25: e9 c8 00 00 00 jmp 0xf2
* 2a: 48 8b 44 24 48 mov 0x48(%rsp),%rax <-- trapping instruction
2f: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
34: 84 c0 test %al,%al
36: 0f 85 eb 04 00 00 jne 0x527
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 44 rex.R
3f: 24 .byte 0x24