FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
6.10.0-rc5-syzkaller-01097-g748e3bbf4721 #0 Not tainted
------------------------------------------------------
syz.2.2093/11254 is trying to acquire lock:
ffffffff8e328100 (console_owner){..-.}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:334 [inline]
ffffffff8e328100 (console_owner){..-.}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline]
ffffffff8e328100 (console_owner){..-.}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:286 [inline]
ffffffff8e328100 (console_owner){..-.}-{0:0}, at: console_flush_all+0x152/0xfd0 kernel/printk/printk.c:2986
but task is already holding lock:
ffff8880b943e858 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&rq->__lock){-.-.}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
raw_spin_rq_lock kernel/sched/sched.h:1406 [inline]
rq_lock kernel/sched/sched.h:1702 [inline]
task_fork_fair+0x61/0x1e0 kernel/sched/fair.c:12710
sched_cgroup_fork+0x37c/0x410 kernel/sched/core.c:4844
copy_process+0x21fc/0x3da0 kernel/fork.c:2500
kernel_clone+0x226/0x8f0 kernel/fork.c:2798
user_mode_thread+0x132/0x1a0 kernel/fork.c:2876
rest_init+0x23/0x300 init/main.c:712
start_kernel+0x47a/0x500 init/main.c:1103
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147
-> #3 (&p->pi_lock){-.-.}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline]
try_to_wake_up+0xb0/0x1470 kernel/sched/core.c:4262
__wake_up_common kernel/sched/wait.c:89 [inline]
__wake_up_common_lock+0x130/0x1e0 kernel/sched/wait.c:106
tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1821
serial8250_handle_irq+0x558/0x710 drivers/tty/serial/8250/8250_port.c:1929
serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1949
serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:130
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 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+0x136/0x230 arch/x86/kernel/irq.c:285
common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:332
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
__pfx_ap_starting+0x0/0x10 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147
-> #2 (&tty->write_wait){-...}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
__wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105
tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1821
serial8250_handle_irq+0x558/0x710 drivers/tty/serial/8250/8250_port.c:1929
serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1949
serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:130
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 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+0x136/0x230 arch/x86/kernel/irq.c:285
common_interrupt+0xa5/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:707
cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:332
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:430
__pfx_ap_starting+0x0/0x10 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147
-> #1 (&port_lock_key){-.-.}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
uart_port_lock_irqsave include/linux/serial_core.h:618 [inline]
serial8250_console_write+0x1a8/0x1770 drivers/tty/serial/8250/8250_port.c:3352
console_emit_next_record kernel/printk/printk.c:2928 [inline]
console_flush_all+0x867/0xfd0 kernel/printk/printk.c:2994
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063
vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345
_printk+0xd5/0x120 kernel/printk/printk.c:2370
register_console+0x722/0xce0 kernel/printk/printk.c:3596
univ8250_console_init+0x49/0x50 drivers/tty/serial/8250/8250_core.c:719
console_init+0x1b8/0x6f0 kernel/printk/printk.c:3742
start_kernel+0x2d3/0x500 init/main.c:1038
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147
-> #0 (console_owner){..-.}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3869
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
console_lock_spinning_enable kernel/printk/printk.c:1870 [inline]
console_emit_next_record kernel/printk/printk.c:2922 [inline]
console_flush_all+0x810/0xfd0 kernel/printk/printk.c:2994
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063
vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345
_printk+0xd5/0x120 kernel/printk/printk.c:2370
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x391/0x4e0 lib/fault-inject.c:153
strncpy_from_user+0x36/0x2f0 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186
bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline]
____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:311 [inline]
bpf_probe_read_compat_str+0xe9/0x180 kernel/trace/bpf_trace.c:307
bpf_prog_f2ce78ec2d45df6f+0x3d/0x3f
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2403 [inline]
bpf_trace_run4+0x334/0x590 kernel/trace/bpf_trace.c:2446
__traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2587/0x4a20 kernel/sched/core.c:6742
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
kasan_check_range+0x5/0x290 mm/kasan/generic.c:188
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:571 [inline]
cpu_online include/linux/cpumask.h:1181 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xd4/0x550 kernel/locking/lockdep.c:5725
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:768
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4513
skb_kfree_head net/core/skbuff.c:1080 [inline]
skb_free_head net/core/skbuff.c:1094 [inline]
skb_release_data+0x64d/0x880 net/core/skbuff.c:1121
skb_release_all net/core/skbuff.c:1186 [inline]
__kfree_skb net/core/skbuff.c:1200 [inline]
sk_skb_reason_drop+0x1a5/0x3d0 net/core/skbuff.c:1238
kfree_skb_reason include/linux/skbuff.h:1260 [inline]
kfree_skb include/linux/skbuff.h:1269 [inline]
hci_mgmt_cmd+0x708/0x11d0 net/bluetooth/hci_sock.c:1645
hci_sock_sendmsg+0x7b8/0x11c0 net/bluetooth/hci_sock.c:1832
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
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.2.2093/11254:
#0: ffff888065296258 (sk_lock-AF_BLUETOOTH-BTPROTO_HCI){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1607 [inline]
#0: ffff888065296258 (sk_lock-AF_BLUETOOTH-BTPROTO_HCI){+.+.}-{0:0}, at: hci_sock_sendmsg+0x57a/0x11c0 net/bluetooth/hci_sock.c:1816
#1: ffffffff8f765668 (mgmt_chan_list_lock){+.+.}-{3:3}, at: hci_sock_sendmsg+0x617/0x11c0 net/bluetooth/hci_sock.c:1829
#2: ffff8880b943e858 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#3: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#3: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#3: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline]
#3: ffffffff8e333f60 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x244/0x590 kernel/trace/bpf_trace.c:2446
#4: ffffffff8e20fa20 (console_lock){+.+.}-{0:0}, at: _printk+0xd5/0x120 kernel/printk/printk.c:2370
#5: ffffffff8e20f650 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:334 [inline]
#5: ffffffff8e20f650 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline]
#5: ffffffff8e20f650 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:286 [inline]
#5: ffffffff8e20f650 (console_srcu){....}-{0:0}, at: console_flush_all+0x152/0xfd0 kernel/printk/printk.c:2986
stack backtrace:
CPU: 0 PID: 11254 Comm: syz.2.2093 Not tainted 6.10.0-rc5-syzkaller-01097-g748e3bbf4721 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3869
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
console_lock_spinning_enable kernel/printk/printk.c:1870 [inline]
console_emit_next_record kernel/printk/printk.c:2922 [inline]
console_flush_all+0x810/0xfd0 kernel/printk/printk.c:2994
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063
vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345
_printk+0xd5/0x120 kernel/printk/printk.c:2370
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x391/0x4e0 lib/fault-inject.c:153
strncpy_from_user+0x36/0x2f0 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186
bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline]
____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:311 [inline]
bpf_probe_read_compat_str+0xe9/0x180 kernel/trace/bpf_trace.c:307
bpf_prog_f2ce78ec2d45df6f+0x3d/0x3f
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2403 [inline]
bpf_trace_run4+0x334/0x590 kernel/trace/bpf_trace.c:2446
__traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2587/0x4a20 kernel/sched/core.c:6742
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:188
Code: 8d e8 cf 25 e4 ff 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37
RSP: 0018:ffffc90004307230 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81726794
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fadcd28
RBP: ffffc90004307388 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: ffff888021e03c00 R12: 1ffff92000860e50
R13: dffffc0000000000 R14: 0000000000000000 R15: 00007f47b4d75b99
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:571 [inline]
cpu_online include/linux/cpumask.h:1181 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xd4/0x550 kernel/locking/lockdep.c:5725
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:768
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4513
skb_kfree_head net/core/skbuff.c:1080 [inline]
skb_free_head net/core/skbuff.c:1094 [inline]
skb_release_data+0x64d/0x880 net/core/skbuff.c:1121
skb_release_all net/core/skbuff.c:1186 [inline]
__kfree_skb net/core/skbuff.c:1200 [inline]
sk_skb_reason_drop+0x1a5/0x3d0 net/core/skbuff.c:1238
kfree_skb_reason include/linux/skbuff.h:1260 [inline]
kfree_skb include/linux/skbuff.h:1269 [inline]
hci_mgmt_cmd+0x708/0x11d0 net/bluetooth/hci_sock.c:1645
hci_sock_sendmsg+0x7b8/0x11c0 net/bluetooth/hci_sock.c:1832
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f47b4d75b99
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:00007f47b5adc048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f47b4f03fa0 RCX: 00007f47b4d75b99
RDX: 000000000000000d RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00007f47b5adc0a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 000000000000000b R14: 00007f47b4f03fa0 R15: 00007ffe623ab728
CPU: 0 PID: 11254 Comm: syz.2.2093 Not tainted 6.10.0-rc5-syzkaller-01097-g748e3bbf4721 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
fail_dump lib/fault-inject.c:52 [inline]
should_fail_ex+0x3b0/0x4e0 lib/fault-inject.c:153
strncpy_from_user+0x36/0x2f0 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186
bpf_probe_read_user_str_common kernel/trace/bpf_trace.c:216 [inline]
____bpf_probe_read_compat_str kernel/trace/bpf_trace.c:311 [inline]
bpf_probe_read_compat_str+0xe9/0x180 kernel/trace/bpf_trace.c:307
bpf_prog_f2ce78ec2d45df6f+0x3d/0x3f
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2403 [inline]
bpf_trace_run4+0x334/0x590 kernel/trace/bpf_trace.c:2446
__traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2587/0x4a20 kernel/sched/core.c:6742
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:188
Code: 8d e8 cf 25 e4 ff 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37
RSP: 0018:ffffc90004307230 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81726794
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fadcd28
RBP: ffffc90004307388 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: ffff888021e03c00 R12: 1ffff92000860e50
R13: dffffc0000000000 R14: 0000000000000000 R15: 00007f47b4d75b99
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:571 [inline]
cpu_online include/linux/cpumask.h:1181 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xd4/0x550 kernel/locking/lockdep.c:5725
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
is_bpf_text_address+0x46/0x2a0 kernel/bpf/core.c:768
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4513
skb_kfree_head net/core/skbuff.c:1080 [inline]
skb_free_head net/core/skbuff.c:1094 [inline]
skb_release_data+0x64d/0x880 net/core/skbuff.c:1121
skb_release_all net/core/skbuff.c:1186 [inline]
__kfree_skb net/core/skbuff.c:1200 [inline]
sk_skb_reason_drop+0x1a5/0x3d0 net/core/skbuff.c:1238
kfree_skb_reason include/linux/skbuff.h:1260 [inline]
kfree_skb include/linux/skbuff.h:1269 [inline]
hci_mgmt_cmd+0x708/0x11d0 net/bluetooth/hci_sock.c:1645
hci_sock_sendmsg+0x7b8/0x11c0 net/bluetooth/hci_sock.c:1832
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f47b4d75b99
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:00007f47b5adc048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f47b4f03fa0 RCX: 00007f47b4d75b99
RDX: 000000000000000d RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00007f47b5adc0a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 000000000000000b R14: 00007f47b4f03fa0 R15: 00007ffe623ab728
----------------
Code disassembly (best guess), 1 bytes skipped:
0: e8 cf 25 e4 ff call 0xffe425d4
5: 90 nop
6: 0f 0b ud2
8: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
f: 00 00 00
12: 66 90 xchg %ax,%ax
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
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: 66 0f 1f 00 nopw (%rax)
28: 55 push %rbp
* 29: 41 57 push %r15 <-- trapping instruction
2b: 41 56 push %r14
2d: 41 54 push %r12
2f: 53 push %rbx
30: b0 01 mov $0x1,%al
32: 48 85 f6 test %rsi,%rsi
35: 0f 84 a0 01 00 00 je 0x1db
3b: 4c 8d 04 37 lea (%rdi,%rsi,1),%r8