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-rc3-syzkaller-00042-g78f4e737a53e #0 Not tainted
------------------------------------------------------
syz.0.765/8622 is trying to acquire lock:
ffffffff8e4d1d60 (console_owner){-...}-{0:0}, at: console_lock_spinning_enable+0x9f/0xd0 kernel/printk/printk.c:1924
but task is already holding lock:
ffff88802b23a418 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:614 [inline]
ffff88802b23a418 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:599
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:606
raw_spin_rq_lock kernel/sched/sched.h:1532 [inline]
task_rq_lock+0xcf/0x490 kernel/sched/core.c:708
cgroup_move_task+0x81/0x2a0 kernel/sched/psi.c:1161
css_set_move_task+0x288/0x5f0 kernel/cgroup/cgroup.c:918
cgroup_post_fork+0x201/0x9e0 kernel/cgroup/cgroup.c:6754
copy_process+0x5cfc/0x76a0 kernel/fork.c:2413
kernel_clone+0xfc/0x960 kernel/fork.c:2599
user_mode_thread+0xc7/0x110 kernel/fork.c:2677
rest_init+0x23/0x2b0 init/main.c:710
start_kernel+0x3ee/0x4d0 init/main.c:1102
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:307
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:288
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+0xb2/0x1680 kernel/sched/core.c:4226
__wake_up_common+0x135/0x1f0 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:1838
serial8250_handle_irq+0x761/0xcb0 drivers/tty/serial/8250/8250_port.c:1946
serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1966
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+0x28e/0xab0 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+0xdf/0x250 arch/x86/kernel/irq.c:292
common_interrupt+0xba/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+0xf/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:749
default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x391/0x510 kernel/sched/idle.c:325
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:423
start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:315
common_startup_64+0x13e/0x148
-> #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:1838
serial8250_handle_irq+0x761/0xcb0 drivers/tty/serial/8250/8250_port.c:1946
serial8250_default_handle_irq+0x9a/0x210 drivers/tty/serial/8250/8250_port.c:1966
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+0x28e/0xab0 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+0xdf/0x250 arch/x86/kernel/irq.c:292
common_interrupt+0xba/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+0xf/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:749
default_idle_call+0x6d/0xb0 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x391/0x510 kernel/sched/idle.c:325
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:423
start_secondary+0x21d/0x2b0 arch/x86/kernel/smpboot.c:315
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+0x181/0x1890 drivers/tty/serial/8250/8250_port.c:3415
console_emit_next_record kernel/printk/printk.c:3138 [inline]
console_flush_all+0x801/0xc60 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
_printk+0xc7/0x100 kernel/printk/printk.c:2475
register_console+0xc2d/0x11b0 kernel/printk/printk.c:4125
univ8250_console_init+0x5f/0x90 drivers/tty/serial/8250/8250_core.c:513
console_init+0x14f/0x680 kernel/printk/printk.c:4323
start_kernel+0x29f/0x4d0 init/main.c:1036
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:307
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:288
common_startup_64+0x13e/0x148
-> #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 kernel/locking/lockdep.c:3911 [inline]
__lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240
lock_acquire kernel/locking/lockdep.c:5871 [inline]
lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828
console_lock_spinning_enable+0xb0/0xd0 kernel/printk/printk.c:1924
console_emit_next_record kernel/printk/printk.c:3132 [inline]
console_flush_all+0x7aa/0xc60 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
_printk+0xc7/0x100 kernel/printk/printk.c:2475
fail_dump lib/fault-inject.c:66 [inline]
should_fail_ex+0x4e7/0x640 lib/fault-inject.c:174
__copy_to_user_inatomic include/linux/uaccess.h:132 [inline]
copy_to_user_nofault+0xac/0x1c0 mm/maccess.c:156
____bpf_probe_write_user kernel/trace/bpf_trace.c:348 [inline]
bpf_probe_write_user+0xaf/0xf0 kernel/trace/bpf_trace.c:326
bpf_prog_6303d92f98284ad8+0x44/0x4c
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+0x249/0x5a0 kernel/trace/bpf_trace.c:2301
__bpf_trace_sched_switch+0x145/0x190 include/trace/events/sched.h:220
__traceiter_sched_switch+0x6f/0xc0 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+0x1bee/0x5de0 kernel/sched/core.c:6782
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108
irqentry_exit+0x36/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
check_kcov_mode kernel/kcov.c:183 [inline]
__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:217
__vmalloc_node_range_noprof+0xb4/0x14b0 mm/vmalloc.c:3818
__vmalloc_node_noprof+0xad/0xf0 mm/vmalloc.c:3948
bpf_prog_alloc_no_stats+0x54/0x630 kernel/bpf/core.c:104
bpf_prog_alloc+0x3b/0x230 kernel/bpf/core.c:146
bpf_prog_load+0x1a04/0x2490 kernel/bpf/syscall.c:2882
__sys_bpf+0x433c/0x4d80 kernel/bpf/syscall.c:5836
__do_sys_bpf kernel/bpf/syscall.c:5943 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5941 [inline]
__ia32_sys_bpf+0x76/0xe0 kernel/bpf/syscall.c:5941
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
__do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306
do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
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 ***
4 locks held by syz.0.765/8622:
#0: ffff88802b23a418 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:614 [inline]
#0: ffff88802b23a418 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:599
#1: ffffffff8e5c47c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#1: ffffffff8e5c47c0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#1: ffffffff8e5c47c0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2257 [inline]
#1: ffffffff8e5c47c0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x1cf/0x5a0 kernel/trace/bpf_trace.c:2301
#2: ffffffff8e5b21a0 (console_lock){+.+.}-{0:0}, at: _printk+0xc7/0x100 kernel/printk/printk.c:2475
#3: ffffffff8e5b2210 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:336 [inline]
#3: ffffffff8e5b2210 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:346 [inline]
#3: ffffffff8e5b2210 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:288 [inline]
#3: ffffffff8e5b2210 (console_srcu){....}-{0:0}, at: console_flush_all+0x158/0xc60 kernel/printk/printk.c:3203
stack backtrace:
CPU: 0 UID: 0 PID: 8622 Comm: syz.0.765 Not tainted 6.16.0-rc3-syzkaller-00042-g78f4e737a53e #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2046
check_noncircular+0x14c/0x170 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 kernel/locking/lockdep.c:3911 [inline]
__lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240
lock_acquire kernel/locking/lockdep.c:5871 [inline]
lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828
console_lock_spinning_enable+0xb0/0xd0 kernel/printk/printk.c:1924
console_emit_next_record kernel/printk/printk.c:3132 [inline]
console_flush_all+0x7aa/0xc60 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
_printk+0xc7/0x100 kernel/printk/printk.c:2475
fail_dump lib/fault-inject.c:66 [inline]
should_fail_ex+0x4e7/0x640 lib/fault-inject.c:174
__copy_to_user_inatomic include/linux/uaccess.h:132 [inline]
copy_to_user_nofault+0xac/0x1c0 mm/maccess.c:156
____bpf_probe_write_user kernel/trace/bpf_trace.c:348 [inline]
bpf_probe_write_user+0xaf/0xf0 kernel/trace/bpf_trace.c:326
bpf_prog_6303d92f98284ad8+0x44/0x4c
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+0x249/0x5a0 kernel/trace/bpf_trace.c:2301
__bpf_trace_sched_switch+0x145/0x190 include/trace/events/sched.h:220
__traceiter_sched_switch+0x6f/0xc0 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+0x1bee/0x5de0 kernel/sched/core.c:6782
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108
irqentry_exit+0x36/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:check_kcov_mode kernel/kcov.c:185 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:217
Code: 8b 05 19 76 10 12 a9 00 01 ff 00 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 f0 00 75 35 8b 82 3c 16 00 00 85 c0 74 2b <8b> 82 18 16 00 00 83 f8 02 75 20 48 8b 8a 20 16 00 00 8b 92 1c 16
RSP: 0018:ffffc90022aa7880 EFLAGS: 00000246
RAX: 0000000080000000 RBX: dffffc0000000000 RCX: ffffe8ffffffffff
RDX: ffff88802038c880 RSI: ffffffff8210ed84 RDI: 0000000000001000
RBP: 0000000000000001 R08: 0000000000500dc0 R09: 8000000000000163
R10: 0000000000000011 R11: 0000000000000001 R12: 0000000000500dc0
R13: 1ffff92004554f2c R14: ffffffff81cb7bf4 R15: 0000000000001000
__vmalloc_node_range_noprof+0xb4/0x14b0 mm/vmalloc.c:3818
__vmalloc_node_noprof+0xad/0xf0 mm/vmalloc.c:3948
bpf_prog_alloc_no_stats+0x54/0x630 kernel/bpf/core.c:104
bpf_prog_alloc+0x3b/0x230 kernel/bpf/core.c:146
bpf_prog_load+0x1a04/0x2490 kernel/bpf/syscall.c:2882
__sys_bpf+0x433c/0x4d80 kernel/bpf/syscall.c:5836
__do_sys_bpf kernel/bpf/syscall.c:5943 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5941 [inline]
__ia32_sys_bpf+0x76/0xe0 kernel/bpf/syscall.c:5941
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
__do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306
do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f43579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f504555c EFLAGS: 00000296 ORIG_RAX: 0000000000000165
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080000440
RDX: 0000000000000070 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 UID: 0 PID: 8622 Comm: syz.0.765 Not tainted 6.16.0-rc3-syzkaller-00042-g78f4e737a53e #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
fail_dump lib/fault-inject.c:73 [inline]
should_fail_ex+0x512/0x640 lib/fault-inject.c:174
__copy_to_user_inatomic include/linux/uaccess.h:132 [inline]
copy_to_user_nofault+0xac/0x1c0 mm/maccess.c:156
____bpf_probe_write_user kernel/trace/bpf_trace.c:348 [inline]
bpf_probe_write_user+0xaf/0xf0 kernel/trace/bpf_trace.c:326
bpf_prog_6303d92f98284ad8+0x44/0x4c
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+0x249/0x5a0 kernel/trace/bpf_trace.c:2301
__bpf_trace_sched_switch+0x145/0x190 include/trace/events/sched.h:220
__traceiter_sched_switch+0x6f/0xc0 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+0x1bee/0x5de0 kernel/sched/core.c:6782
preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7108
irqentry_exit+0x36/0x90 kernel/entry/common.c:307
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:check_kcov_mode kernel/kcov.c:185 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x3b/0x70 kernel/kcov.c:217
Code: 8b 05 19 76 10 12 a9 00 01 ff 00 74 1d f6 c4 01 74 43 a9 00 00 0f 00 75 3c a9 00 00 f0 00 75 35 8b 82 3c 16 00 00 85 c0 74 2b <8b> 82 18 16 00 00 83 f8 02 75 20 48 8b 8a 20 16 00 00 8b 92 1c 16
RSP: 0018:ffffc90022aa7880 EFLAGS: 00000246
RAX: 0000000080000000 RBX: dffffc0000000000 RCX: ffffe8ffffffffff
RDX: ffff88802038c880 RSI: ffffffff8210ed84 RDI: 0000000000001000
RBP: 0000000000000001 R08: 0000000000500dc0 R09: 8000000000000163
R10: 0000000000000011 R11: 0000000000000001 R12: 0000000000500dc0
R13: 1ffff92004554f2c R14: ffffffff81cb7bf4 R15: 0000000000001000
__vmalloc_node_range_noprof+0xb4/0x14b0 mm/vmalloc.c:3818
__vmalloc_node_noprof+0xad/0xf0 mm/vmalloc.c:3948
bpf_prog_alloc_no_stats+0x54/0x630 kernel/bpf/core.c:104
bpf_prog_alloc+0x3b/0x230 kernel/bpf/core.c:146
bpf_prog_load+0x1a04/0x2490 kernel/bpf/syscall.c:2882
__sys_bpf+0x433c/0x4d80 kernel/bpf/syscall.c:5836
__do_sys_bpf kernel/bpf/syscall.c:5943 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5941 [inline]
__ia32_sys_bpf+0x76/0xe0 kernel/bpf/syscall.c:5941
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
__do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306
do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f43579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f504555c EFLAGS: 00000296 ORIG_RAX: 0000000000000165
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080000440
RDX: 0000000000000070 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
ceph: No mds server is up or the cluster is laggy
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Code disassembly (best guess):
0: 8b 05 19 76 10 12 mov 0x12107619(%rip),%eax # 0x1210761f
6: a9 00 01 ff 00 test $0xff0100,%eax
b: 74 1d je 0x2a
d: f6 c4 01 test $0x1,%ah
10: 74 43 je 0x55
12: a9 00 00 0f 00 test $0xf0000,%eax
17: 75 3c jne 0x55
19: a9 00 00 f0 00 test $0xf00000,%eax
1e: 75 35 jne 0x55
20: 8b 82 3c 16 00 00 mov 0x163c(%rdx),%eax
26: 85 c0 test %eax,%eax
28: 74 2b je 0x55
* 2a: 8b 82 18 16 00 00 mov 0x1618(%rdx),%eax <-- trapping instruction
30: 83 f8 02 cmp $0x2,%eax
33: 75 20 jne 0x55
35: 48 8b 8a 20 16 00 00 mov 0x1620(%rdx),%rcx
3c: 8b .byte 0x8b
3d: 92 xchg %eax,%edx
3e: 1c 16 sbb $0x16,%al