FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
6.15.0-syzkaller-g99fe8af069a9 #0 Not tainted
------------------------------------------------------
syz.2.2858/13868 is trying to acquire lock:
ffffffff8e133280 (console_owner){-...}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
ffffffff8e133280 (console_owner){-...}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
ffffffff8e133280 (console_owner){-...}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
ffffffff8e133280 (console_owner){-...}-{0:0}, at: console_flush_all+0x13a/0xc40 kernel/printk/printk.c:3203
but task is already holding lock:
ffff8880b873b918 (&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:6759
copy_process+0x3862/0x3c00 kernel/fork.c:2413
kernel_clone+0x21e/0x870 kernel/fork.c:2599
user_mode_thread+0xdd/0x140 kernel/fork.c:2677
rest_init+0x23/0x300 init/main.c:709
start_kernel+0x47d/0x500 init/main.c:1101
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:4226
__wake_up_common kernel/sched/wait.c:89 [inline]
__wake_up_common_lock+0x134/0x1f0 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:1842
serial8250_handle_irq+0x633/0xbb0 drivers/tty/serial/8250/8250_port.c:1950
serial8250_default_handle_irq+0xbf/0x1b0 drivers/tty/serial/8250/8250_port.c:1970
serial8250_interrupt+0xa2/0x1d0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x28c/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:789
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+0x143/0x250 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
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:81
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:743
default_idle_call+0x74/0xb0 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x1e8/0x510 kernel/sched/idle.c:325
cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:423
rest_init+0x2de/0x300 init/main.c:744
start_kernel+0x47d/0x500 init/main.c:1101
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
-> #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:1842
serial8250_handle_irq+0x633/0xbb0 drivers/tty/serial/8250/8250_port.c:1950
serial8250_default_handle_irq+0xbf/0x1b0 drivers/tty/serial/8250/8250_port.c:1970
serial8250_interrupt+0xa2/0x1d0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x28c/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:789
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+0x143/0x250 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
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0xa8/0x110 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+0x3ba/0xa40 drivers/tty/serial/serial_core.c:636
process_output_block drivers/tty/n_tty.c:561 [inline]
n_tty_write+0xd35/0x11d0 drivers/tty/n_tty.c:2377
iterate_tty_write drivers/tty/tty_io.c:1015 [inline]
file_tty_write+0x503/0x990 drivers/tty/tty_io.c:1090
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: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:715 [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: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: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_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline]
____bpf_probe_read_user_str kernel/trace/bpf_trace.c:224 [inline]
bpf_probe_read_user_str+0x2a/0x70 kernel/trace/bpf_trace.c:221
bpf_prog_bc7c5c6b9645592f+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_run4+0x28b/0x4a0 kernel/trace/bpf_trace.c:2301
__bpf_trace_sched_switch+0x17a/0x1e0 include/trace/events/sched.h:220
__traceiter_sched_switch+0x9d/0xd0 include/trace/events/sched.h:220
__do_trace_sched_switch include/trace/events/sched.h:220 [inline]
trace_sched_switch include/trace/events/sched.h:220 [inline]
__schedule+0x2328/0x4d00 kernel/sched/core.c:6782
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7108
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
__sanitizer_cov_trace_switch+0x7d/0x130 kernel/kcov.c:-1
ma_pivots lib/maple_tree.c:666 [inline]
mtree_range_walk+0xea/0x840 lib/maple_tree.c:2769
mas_state_walk lib/maple_tree.c:3630 [inline]
mt_find+0x23f/0x5f0 lib/maple_tree.c:6916
find_vma+0xe7/0x160 mm/mmap.c:913
lock_mm_and_find_vma+0x5f/0x300 mm/mmap_lock.c:251
do_user_addr_fault+0x331/0x1390 arch/x86/mm/fault.c:1359
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:68
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
_inline_copy_from_user include/linux/uaccess.h:178 [inline]
_copy_from_user+0x7a/0xb0 lib/usercopy.c:18
copy_from_user include/linux/uaccess.h:212 [inline]
copy_from_bpfptr_offset include/linux/bpfptr.h:53 [inline]
copy_from_bpfptr include/linux/bpfptr.h:59 [inline]
kvmemdup_bpfptr_noprof include/linux/bpfptr.h:74 [inline]
map_update_elem+0x4a6/0x750 kernel/bpf/syscall.c:1753
__sys_bpf+0x6a9/0x860 kernel/bpf/syscall.c:5966
__do_sys_bpf kernel/bpf/syscall.c:6085 [inline]
__se_sys_bpf kernel/bpf/syscall.c:6083 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6083
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.2.2858/13868:
#0: ffff888024b1a220 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_trylock include/linux/mmap_lock.h:431 [inline]
#0: ffff888024b1a220 (&mm->mmap_lock){++++}-{4:4}, at: get_mmap_lock_carefully mm/mmap_lock.c:188 [inline]
#0: ffff888024b1a220 (&mm->mmap_lock){++++}-{4:4}, at: lock_mm_and_find_vma+0x32/0x300 mm/mmap_lock.c:248
#1: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#1: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#1: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: mt_find+0x15c/0x5f0 lib/maple_tree.c:6914
#2: ffff8880b873b918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:606
#3: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#3: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#3: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline]
#3: ffffffff8e13f060 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x19c/0x4a0 kernel/trace/bpf_trace.c:2301
#4: ffffffff8e1332e0 (console_lock){+.+.}-{0:0}, at: _printk+0xcf/0x120 kernel/printk/printk.c:2475
#5: ffffffff8e01abb0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
#5: ffffffff8e01abb0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
#5: ffffffff8e01abb0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
#5: ffffffff8e01abb0 (console_srcu){....}-{0:0}, at: console_flush_all+0x13a/0xc40 kernel/printk/printk.c:3203
stack backtrace:
CPU: 1 UID: 0 PID: 13868 Comm: syz.2.2858 Not tainted 6.15.0-syzkaller-g99fe8af069a9 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline]
____bpf_probe_read_user_str kernel/trace/bpf_trace.c:224 [inline]
bpf_probe_read_user_str+0x2a/0x70 kernel/trace/bpf_trace.c:221
bpf_prog_bc7c5c6b9645592f+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_run4+0x28b/0x4a0 kernel/trace/bpf_trace.c:2301
__bpf_trace_sched_switch+0x17a/0x1e0 include/trace/events/sched.h:220
__traceiter_sched_switch+0x9d/0xd0 include/trace/events/sched.h:220
__do_trace_sched_switch include/trace/events/sched.h:220 [inline]
trace_sched_switch include/trace/events/sched.h:220 [inline]
__schedule+0x2328/0x4d00 kernel/sched/core.c:6782
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7108
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_switch+0x7d/0x130 kernel/kcov.c:-1
Code: 75 13 e9 c2 00 00 00 b9 01 00 00 00 48 85 c0 0f 84 b4 00 00 00 41 57 41 56 41 54 53 48 8b 54 24 20 65 4c 8b 04 25 08 c0 9c 92 <45> 31 c9 eb 08 49 ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d
RSP: 0018:ffffc9001b78f7f8 EFLAGS: 00000206
RAX: 0000000000000003 RBX: ffff88807624a41c RCX: 0000000000000005
RDX: ffffffff8b5dd80a RSI: ffffffff8f87cd50 RDI: 0000000000000003
RBP: dffffc0000000000 R08: ffff88802b76da00 R09: 0000000000000002
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff920036f1f24 R14: 0000000000000003 R15: ffff88807624a400
ma_pivots lib/maple_tree.c:666 [inline]
mtree_range_walk+0xea/0x840 lib/maple_tree.c:2769
mas_state_walk lib/maple_tree.c:3630 [inline]
mt_find+0x23f/0x5f0 lib/maple_tree.c:6916
find_vma+0xe7/0x160 mm/mmap.c:913
lock_mm_and_find_vma+0x5f/0x300 mm/mmap_lock.c:251
do_user_addr_fault+0x331/0x1390 arch/x86/mm/fault.c:1359
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74
Code: f7 03 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 a4 e9 0f f7 03 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48
RSP: 0018:ffffc9001b78fc98 EFLAGS: 00050202
RAX: 00007ffffffff001 RBX: 000000000020201c RCX: 000000000009571c
RDX: 0000000000000001 RSI: 000020000016e000 RDI: ffff88804a16c900
RBP: 000000000020201c R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: ffffed1009440403 R12: ffffc9001b78fd98
R13: 1ffff920036f1fb3 R14: ffff88804a000000 R15: 0000200000001700
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
_inline_copy_from_user include/linux/uaccess.h:178 [inline]
_copy_from_user+0x7a/0xb0 lib/usercopy.c:18
copy_from_user include/linux/uaccess.h:212 [inline]
copy_from_bpfptr_offset include/linux/bpfptr.h:53 [inline]
copy_from_bpfptr include/linux/bpfptr.h:59 [inline]
kvmemdup_bpfptr_noprof include/linux/bpfptr.h:74 [inline]
map_update_elem+0x4a6/0x750 kernel/bpf/syscall.c:1753
__sys_bpf+0x6a9/0x860 kernel/bpf/syscall.c:5966
__do_sys_bpf kernel/bpf/syscall.c:6085 [inline]
__se_sys_bpf kernel/bpf/syscall.c:6083 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6083
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: 0033:0x7fc212b8e929
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:00007fc213956038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fc212db5fa0 RCX: 00007fc212b8e929
RDX: 0000000000000020 RSI: 0000200000001740 RDI: 0000000000000002
RBP: 00007fc213956090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007fc212db5fa0 R15: 00007fff3e25dc78
CPU: 1 UID: 0 PID: 13868 Comm: syz.2.2858 Not tainted 6.15.0-syzkaller-g99fe8af069a9 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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_probe_read_user_str_common kernel/trace/bpf_trace.c:215 [inline]
____bpf_probe_read_user_str kernel/trace/bpf_trace.c:224 [inline]
bpf_probe_read_user_str+0x2a/0x70 kernel/trace/bpf_trace.c:221
bpf_prog_bc7c5c6b9645592f+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_run4+0x28b/0x4a0 kernel/trace/bpf_trace.c:2301
__bpf_trace_sched_switch+0x17a/0x1e0 include/trace/events/sched.h:220
__traceiter_sched_switch+0x9d/0xd0 include/trace/events/sched.h:220
__do_trace_sched_switch include/trace/events/sched.h:220 [inline]
trace_sched_switch include/trace/events/sched.h:220 [inline]
__schedule+0x2328/0x4d00 kernel/sched/core.c:6782
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7108
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_switch+0x7d/0x130 kernel/kcov.c:-1
Code: 75 13 e9 c2 00 00 00 b9 01 00 00 00 48 85 c0 0f 84 b4 00 00 00 41 57 41 56 41 54 53 48 8b 54 24 20 65 4c 8b 04 25 08 c0 9c 92 <45> 31 c9 eb 08 49 ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d
RSP: 0018:ffffc9001b78f7f8 EFLAGS: 00000206
RAX: 0000000000000003 RBX: ffff88807624a41c RCX: 0000000000000005
RDX: ffffffff8b5dd80a RSI: ffffffff8f87cd50 RDI: 0000000000000003
RBP: dffffc0000000000 R08: ffff88802b76da00 R09: 0000000000000002
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff920036f1f24 R14: 0000000000000003 R15: ffff88807624a400
ma_pivots lib/maple_tree.c:666 [inline]
mtree_range_walk+0xea/0x840 lib/maple_tree.c:2769
mas_state_walk lib/maple_tree.c:3630 [inline]
mt_find+0x23f/0x5f0 lib/maple_tree.c:6916
find_vma+0xe7/0x160 mm/mmap.c:913
lock_mm_and_find_vma+0x5f/0x300 mm/mmap_lock.c:251
do_user_addr_fault+0x331/0x1390 arch/x86/mm/fault.c:1359
handle_page_fault arch/x86/mm/fault.c:1476 [inline]
exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74
Code: f7 03 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 a4 e9 0f f7 03 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48
RSP: 0018:ffffc9001b78fc98 EFLAGS: 00050202
RAX: 00007ffffffff001 RBX: 000000000020201c RCX: 000000000009571c
RDX: 0000000000000001 RSI: 000020000016e000 RDI: ffff88804a16c900
RBP: 000000000020201c R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: ffffed1009440403 R12: ffffc9001b78fd98
R13: 1ffff920036f1fb3 R14: ffff88804a000000 R15: 0000200000001700
copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline]
_inline_copy_from_user include/linux/uaccess.h:178 [inline]
_copy_from_user+0x7a/0xb0 lib/usercopy.c:18
copy_from_user include/linux/uaccess.h:212 [inline]
copy_from_bpfptr_offset include/linux/bpfptr.h:53 [inline]
copy_from_bpfptr include/linux/bpfptr.h:59 [inline]
kvmemdup_bpfptr_noprof include/linux/bpfptr.h:74 [inline]
map_update_elem+0x4a6/0x750 kernel/bpf/syscall.c:1753
__sys_bpf+0x6a9/0x860 kernel/bpf/syscall.c:5966
__do_sys_bpf kernel/bpf/syscall.c:6085 [inline]
__se_sys_bpf kernel/bpf/syscall.c:6083 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6083
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: 0033:0x7fc212b8e929
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:00007fc213956038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fc212db5fa0 RCX: 00007fc212b8e929
RDX: 0000000000000020 RSI: 0000200000001740 RDI: 0000000000000002
RBP: 00007fc213956090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 00007fc212db5fa0 R15: 00007fff3e25dc78
----------------
Code disassembly (best guess):
0: 75 13 jne 0x15
2: e9 c2 00 00 00 jmp 0xc9
7: b9 01 00 00 00 mov $0x1,%ecx
c: 48 85 c0 test %rax,%rax
f: 0f 84 b4 00 00 00 je 0xc9
15: 41 57 push %r15
17: 41 56 push %r14
19: 41 54 push %r12
1b: 53 push %rbx
1c: 48 8b 54 24 20 mov 0x20(%rsp),%rdx
21: 65 4c 8b 04 25 08 c0 mov %gs:0xffffffff929cc008,%r8
28: 9c 92
* 2a: 45 31 c9 xor %r9d,%r9d <-- trapping instruction
2d: eb 08 jmp 0x37
2f: 49 ff c1 inc %r9
32: 4c 39 c8 cmp %r9,%rax
35: 74 77 je 0xae
37: 4e 8b 54 ce 10 mov 0x10(%rsi,%r9,8),%r10
3c: 65 gs
3d: 44 rex.R
3e: 8b .byte 0x8b
3f: 1d .byte 0x1d