------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
5.15.180-syzkaller #0 Not tainted
------------------------------------------------------
syz.2.89/4504 is trying to acquire lock:
ffffffff8c112420 (console_owner){-.-.}-{0:0}, at: console_trylock_spinning+0x150/0x350 kernel/printk/printk.c:1879
but task is already holding lock:
ffff8880b9028098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x123/0x270 kernel/time/timer.c:946
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #5 (&base->lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
lock_timer_base+0x123/0x270 kernel/time/timer.c:946
__mod_timer+0x117/0xd20 kernel/time/timer.c:1019
queue_delayed_work_on+0x126/0x1e0 kernel/workqueue.c:1715
psi_enqueue kernel/sched/stats.h:102 [inline]
enqueue_task+0x26d/0x2b0 kernel/sched/core.c:1973
activate_task kernel/sched/core.c:2005 [inline]
wake_up_new_task+0x442/0x9a0 kernel/sched/core.c:4522
kernel_clone+0x421/0x930 kernel/fork.c:2627
kernel_thread+0xc8/0x120 kernel/fork.c:2655
rest_init+0x21/0x330 init/main.c:706
start_kernel+0x486/0x530 init/main.c:1140
secondary_startup_64_no_verify+0xb1/0xbb
-> #4 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x2e/0x40 kernel/locking/spinlock.c:368
raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
raw_spin_rq_lock kernel/sched/sched.h:1326 [inline]
rq_lock kernel/sched/sched.h:1621 [inline]
task_fork_fair+0x5c/0x350 kernel/sched/fair.c:11499
sched_cgroup_fork+0x2c6/0x320 kernel/sched/core.c:4466
copy_process+0x22bd/0x3e60 kernel/fork.c:2319
kernel_clone+0x219/0x930 kernel/fork.c:2603
kernel_thread+0xc8/0x120 kernel/fork.c:2655
rest_init+0x21/0x330 init/main.c:706
start_kernel+0x486/0x530 init/main.c:1140
secondary_startup_64_no_verify+0xb1/0xbb
-> #3 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
try_to_wake_up+0x5c/0x1050 kernel/sched/core.c:4030
__wake_up_common+0x2a4/0x4e0 kernel/sched/wait.c:108
__wake_up_common_lock kernel/sched/wait.c:138 [inline]
__wake_up+0x108/0x180 kernel/sched/wait.c:157
tty_port_default_wakeup+0xa5/0xf0 drivers/tty/tty_port.c:51
serial8250_tx_chars+0x629/0x830 drivers/tty/serial/8250/8250_port.c:1828
serial8250_handle_irq+0x519/0x610 drivers/tty/serial/8250/8250_port.c:1924
serial8250_default_handle_irq+0xb4/0x1a0 drivers/tty/serial/8250/8250_port.c:1941
serial8250_interrupt+0x9b/0x1c0 drivers/tty/serial/8250/8250_core.c:127
__handle_irq_event_percpu+0x291/0x9b0 kernel/irq/handle.c:156
handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
handle_irq_event+0xa5/0x220 kernel/irq/handle.c:213
handle_edge_irq+0x243/0xb20 kernel/irq/chip.c:819
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq arch/x86/kernel/irq.c:233 [inline]
__common_interrupt+0xd7/0x1e0 arch/x86/kernel/irq.c:252
common_interrupt+0xb0/0xd0 arch/x86/kernel/irq.c:242
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
unwind_next_frame+0x0/0x1d90
arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
__kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:604 [inline]
kzalloc include/linux/slab.h:735 [inline]
kernfs_iop_get_link+0x63/0x540 fs/kernfs/symlink.c:135
pick_link+0x6c0/0xdc0 fs/namei.c:-1
step_into+0xae9/0xd00 fs/namei.c:1832
link_path_walk+0x662/0xd40 fs/namei.c:-1
path_openat+0x27d/0x2f30 fs/namei.c:3738
do_filp_open+0x1b3/0x3e0 fs/namei.c:3769
do_sys_openat2+0x142/0x4a0 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1280
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #2 (&tty->write_wait){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
__wake_up_common_lock kernel/sched/wait.c:137 [inline]
__wake_up+0xed/0x180 kernel/sched/wait.c:157
tty_port_default_wakeup+0xa5/0xf0 drivers/tty/tty_port.c:51
serial8250_tx_chars+0x629/0x830 drivers/tty/serial/8250/8250_port.c:1828
serial8250_handle_irq+0x519/0x610 drivers/tty/serial/8250/8250_port.c:1924
serial8250_default_handle_irq+0xb4/0x1a0 drivers/tty/serial/8250/8250_port.c:1941
serial8250_interrupt+0x9b/0x1c0 drivers/tty/serial/8250/8250_core.c:127
__handle_irq_event_percpu+0x291/0x9b0 kernel/irq/handle.c:156
handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
handle_irq_event+0xa5/0x220 kernel/irq/handle.c:213
handle_edge_irq+0x243/0xb20 kernel/irq/chip.c:819
generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
handle_irq arch/x86/kernel/irq.c:233 [inline]
__common_interrupt+0xd7/0x1e0 arch/x86/kernel/irq.c:252
common_interrupt+0xb0/0xd0 arch/x86/kernel/irq.c:242
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
uart_write+0x62f/0x880 drivers/tty/serial/serial_core.c:592
process_output_block drivers/tty/n_tty.c:592 [inline]
n_tty_write+0xd21/0x1210 drivers/tty/n_tty.c:2339
do_tty_write drivers/tty/tty_io.c:1038 [inline]
file_tty_write+0x557/0x910 drivers/tty/tty_io.c:1110
call_write_iter include/linux/fs.h:2172 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0x712/0xd00 fs/read_write.c:594
ksys_write+0x14d/0x250 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
-> #1 (&port_lock_key){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162
serial8250_console_write+0x170/0xf80 drivers/tty/serial/8250/8250_port.c:3363
call_console_drivers kernel/printk/printk.c:-1 [inline]
console_unlock+0xc86/0x1200 kernel/printk/printk.c:2744
vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
_printk+0xcc/0x110 kernel/printk/printk.c:2299
register_console+0x682/0x960 kernel/printk/printk.c:3107
univ8250_console_init+0x41/0x50 drivers/tty/serial/8250/8250_core.c:690
console_init+0x177/0x5d0 kernel/printk/printk.c:3207
start_kernel+0x2f9/0x530 init/main.c:1076
secondary_startup_64_no_verify+0xb1/0xbb
-> #0 (console_owner){-.-.}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
console_trylock_spinning+0x170/0x350 kernel/printk/printk.c:1896
vprintk_emit+0xa7/0x150 kernel/printk/printk.c:2273
_printk+0xcc/0x110 kernel/printk/printk.c:2299
report_bug+0x1e5/0x2e0 lib/bug.c:195
handle_bug+0x3a/0x70 arch/x86/kernel/traps.c:239
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_63d51858d7cca270+0x3d/0x724
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
trace_timer_start include/trace/events/timer.h:52 [inline]
enqueue_timer+0x394/0x520 kernel/time/timer.c:586
internal_add_timer kernel/time/timer.c:611 [inline]
__mod_timer+0x8e1/0xd20 kernel/time/timer.c:1062
dsp_cmx_send+0x1ab4/0x1b30 drivers/isdn/mISDN/dsp_cmx.c:1850
call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x525/0x7c0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x328/0x820 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
memset_erms+0xe/0x10 arch/x86/lib/memset_64.S:65
number+0x277/0xf70 lib/vsprintf.c:457
vsnprintf+0x10fe/0x1a00 lib/vsprintf.c:2877
snprintf+0xd7/0x120 lib/vsprintf.c:2944
alloc_port_table_group drivers/infiniband/core/sysfs.c:1097 [inline]
setup_port drivers/infiniband/core/sysfs.c:1206 [inline]
ib_setup_port_attrs+0x474/0x1e80 drivers/infiniband/core/sysfs.c:1426
add_one_compat_dev+0x3ae/0x590 drivers/infiniband/core/device.c:977
add_compat_devs drivers/infiniband/core/device.c:1035 [inline]
enable_device_and_get+0x2a0/0x3c0 drivers/infiniband/core/device.c:1346
ib_register_device+0x102b/0x12b0 drivers/infiniband/core/device.c:1428
rxe_register_device+0x256/0x360 drivers/infiniband/sw/rxe/rxe_verbs.c:1137
rxe_net_add+0x77/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:549
rxe_newlink+0x66/0x100 drivers/infiniband/sw/rxe/rxe.c:272
nldev_newlink+0x485/0x4e0 drivers/infiniband/core/nldev.c:1710
rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline]
rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
rdma_nl_rcv+0x69b/0x970 drivers/infiniband/core/netlink.c:259
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x77c/0x920 net/netlink/af_netlink.c:1337
netlink_sendmsg+0x8ab/0xbc0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
__sys_sendmsg net/socket.c:2519 [inline]
__do_sys_sendmsg net/socket.c:2528 [inline]
__se_sys_sendmsg+0x190/0x250 net/socket.c:2526
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
other info that might help us debug this:
Chain exists of:
console_owner --> &rq->__lock --> &base->lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&base->lock);
lock(&rq->__lock);
lock(&base->lock);
lock(console_owner);
*** DEADLOCK ***
9 locks held by syz.2.89/4504:
#0: ffffffff96440ff8 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:164 [inline]
#0: ffffffff96440ff8 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
#0: ffffffff96440ff8 (&rdma_nl_types[idx].sem){.+.+}-{3:3}, at: rdma_nl_rcv+0x2f9/0x970 drivers/infiniband/core/netlink.c:259
#1: ffffffff8d026110 (link_ops_rwsem){++++}-{3:3}, at: nldev_newlink+0x332/0x4e0 drivers/infiniband/core/nldev.c:1700
#2: ffffffff8d019350 (devices_rwsem){++++}-{3:3}, at: enable_device_and_get+0xfb/0x3c0 drivers/infiniband/core/device.c:1330
#3: ffffffff8d019510 (rdma_nets_rwsem){++++}-{3:3}, at: add_compat_devs drivers/infiniband/core/device.c:1033 [inline]
#3: ffffffff8d019510 (rdma_nets_rwsem){++++}-{3:3}, at: enable_device_and_get+0x269/0x3c0 drivers/infiniband/core/device.c:1346
#4: ffff88807e9e0fe8 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0xee/0x590 drivers/infiniband/core/device.c:951
#5: ffffc90000007be0 ((&dsp_spl_tl)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:45 [inline]
#5: ffffc90000007be0 ((&dsp_spl_tl)){+.-.}-{0:0}, at: call_timer_fn+0xbb/0x530 kernel/time/timer.c:1441
#6: ffffffff8cfdc8b8 (dsp_lock){..-.}-{2:2}, at: dsp_cmx_send+0x22/0x1b30 drivers/isdn/mISDN/dsp_cmx.c:1643
#7: ffff8880b9028098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x123/0x270 kernel/time/timer.c:946
#8: ffffffff8c11d9e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
stack backtrace:
CPU: 0 PID: 4504 Comm: syz.2.89 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
check_noncircular+0x274/0x310 kernel/locking/lockdep.c:2133
check_prev_add kernel/locking/lockdep.c:3053 [inline]
check_prevs_add kernel/locking/lockdep.c:3172 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire+0x2c33/0x7c60 kernel/locking/lockdep.c:5012
lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
console_trylock_spinning+0x170/0x350 kernel/printk/printk.c:1896
vprintk_emit+0xa7/0x150 kernel/printk/printk.c:2273
_printk+0xcc/0x110 kernel/printk/printk.c:2299
report_bug+0x1e5/0x2e0 lib/bug.c:195
handle_bug+0x3a/0x70 arch/x86/kernel/traps.c:239
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 bd ea d7 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 40 e7 d7 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000007858 EFLAGS: 00010046
RAX: ffffffff819fd630 RBX: 0000000000000008 RCX: ffff8880257e0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004afc001
R10: ffffed1004afc001 R11: 1ffff11004afc000 R12: ffff8880257e1788
R13: 00007ffffffff000 R14: ffffc900000078c8 R15: 0000000020000000
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_63d51858d7cca270+0x3d/0x724
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
trace_timer_start include/trace/events/timer.h:52 [inline]
enqueue_timer+0x394/0x520 kernel/time/timer.c:586
internal_add_timer kernel/time/timer.c:611 [inline]
__mod_timer+0x8e1/0xd20 kernel/time/timer.c:1062
dsp_cmx_send+0x1ab4/0x1b30 drivers/isdn/mISDN/dsp_cmx.c:1850
call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x525/0x7c0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x328/0x820 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:memset_erms+0xe/0x10 arch/x86/lib/memset_64.S:66
Code: b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa 4c 89 c8 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01 48 0f af
RSP: 0018:ffffc9000329e958 EFLAGS: 00000202
RAX: ffffc9000329e9e0 RBX: 00000000ffff0a01 RCX: 0000000000000000
RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc9000329e9f8
RBP: ffffc9000329ea80 R08: dffffc0000000000 R09: ffffc9000329e9e0
R10: fffff52000653d3f R11: 1ffff92000653d3c R12: ffff0a01ffffff10
R13: 00000000000003ff R14: ffff8880598320f0 R15: ffff0a01ffffff10
number+0x277/0xf70 lib/vsprintf.c:457
vsnprintf+0x10fe/0x1a00 lib/vsprintf.c:2877
snprintf+0xd7/0x120 lib/vsprintf.c:2944
alloc_port_table_group drivers/infiniband/core/sysfs.c:1097 [inline]
setup_port drivers/infiniband/core/sysfs.c:1206 [inline]
ib_setup_port_attrs+0x474/0x1e80 drivers/infiniband/core/sysfs.c:1426
add_one_compat_dev+0x3ae/0x590 drivers/infiniband/core/device.c:977
add_compat_devs drivers/infiniband/core/device.c:1035 [inline]
enable_device_and_get+0x2a0/0x3c0 drivers/infiniband/core/device.c:1346
ib_register_device+0x102b/0x12b0 drivers/infiniband/core/device.c:1428
rxe_register_device+0x256/0x360 drivers/infiniband/sw/rxe/rxe_verbs.c:1137
rxe_net_add+0x77/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:549
rxe_newlink+0x66/0x100 drivers/infiniband/sw/rxe/rxe.c:272
nldev_newlink+0x485/0x4e0 drivers/infiniband/core/nldev.c:1710
rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline]
rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
rdma_nl_rcv+0x69b/0x970 drivers/infiniband/core/netlink.c:259
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x77c/0x920 net/netlink/af_netlink.c:1337
netlink_sendmsg+0x8ab/0xbc0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
__sys_sendmsg net/socket.c:2519 [inline]
__do_sys_sendmsg net/socket.c:2528 [inline]
__se_sys_sendmsg+0x190/0x250 net/socket.c:2526
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa2aecb5969
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:00007fa2acb1d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa2aeedcfa0 RCX: 00007fa2aecb5969
RDX: 00000000040080c0 RSI: 00002000000003c0 RDI: 0000000000000007
RBP: 00007fa2aed37ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa2aeedcfa0 R15: 00007ffde378b328
WARNING: CPU: 0 PID: 4504 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4504 Comm: syz.2.89 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 bd ea d7 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 40 e7 d7 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000007858 EFLAGS: 00010046
RAX: ffffffff819fd630 RBX: 0000000000000008 RCX: ffff8880257e0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004afc001
R10: ffffed1004afc001 R11: 1ffff11004afc000 R12: ffff8880257e1788
R13: 00007ffffffff000 R14: ffffc900000078c8 R15: 0000000020000000
FS: 00007fa2acb1d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 00000000624c2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_63d51858d7cca270+0x3d/0x724
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
trace_timer_start include/trace/events/timer.h:52 [inline]
enqueue_timer+0x394/0x520 kernel/time/timer.c:586
internal_add_timer kernel/time/timer.c:611 [inline]
__mod_timer+0x8e1/0xd20 kernel/time/timer.c:1062
dsp_cmx_send+0x1ab4/0x1b30 drivers/isdn/mISDN/dsp_cmx.c:1850
call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
expire_timers kernel/time/timer.c:1496 [inline]
__run_timers+0x525/0x7c0 kernel/time/timer.c:1767
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
handle_softirqs+0x328/0x820 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:memset_erms+0xe/0x10 arch/x86/lib/memset_64.S:66
Code: b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 f3 aa 4c 89 c8 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01 01 01 48 0f af
RSP: 0018:ffffc9000329e958 EFLAGS: 00000202
RAX: ffffc9000329e9e0 RBX: 00000000ffff0a01 RCX: 0000000000000000
RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc9000329e9f8
RBP: ffffc9000329ea80 R08: dffffc0000000000 R09: ffffc9000329e9e0
R10: fffff52000653d3f R11: 1ffff92000653d3c R12: ffff0a01ffffff10
R13: 00000000000003ff R14: ffff8880598320f0 R15: ffff0a01ffffff10
number+0x277/0xf70 lib/vsprintf.c:457
vsnprintf+0x10fe/0x1a00 lib/vsprintf.c:2877
snprintf+0xd7/0x120 lib/vsprintf.c:2944
alloc_port_table_group drivers/infiniband/core/sysfs.c:1097 [inline]
setup_port drivers/infiniband/core/sysfs.c:1206 [inline]
ib_setup_port_attrs+0x474/0x1e80 drivers/infiniband/core/sysfs.c:1426
add_one_compat_dev+0x3ae/0x590 drivers/infiniband/core/device.c:977
add_compat_devs drivers/infiniband/core/device.c:1035 [inline]
enable_device_and_get+0x2a0/0x3c0 drivers/infiniband/core/device.c:1346
ib_register_device+0x102b/0x12b0 drivers/infiniband/core/device.c:1428
rxe_register_device+0x256/0x360 drivers/infiniband/sw/rxe/rxe_verbs.c:1137
rxe_net_add+0x77/0xe0 drivers/infiniband/sw/rxe/rxe_net.c:549
rxe_newlink+0x66/0x100 drivers/infiniband/sw/rxe/rxe.c:272
nldev_newlink+0x485/0x4e0 drivers/infiniband/core/nldev.c:1710
rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:-1 [inline]
rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
rdma_nl_rcv+0x69b/0x970 drivers/infiniband/core/netlink.c:259
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x77c/0x920 net/netlink/af_netlink.c:1337
netlink_sendmsg+0x8ab/0xbc0 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2436
___sys_sendmsg+0x1f0/0x260 net/socket.c:2490
__sys_sendmsg net/socket.c:2519 [inline]
__do_sys_sendmsg net/socket.c:2528 [inline]
__se_sys_sendmsg+0x190/0x250 net/socket.c:2526
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa2aecb5969
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:00007fa2acb1d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa2aeedcfa0 RCX: 00007fa2aecb5969
RDX: 00000000040080c0 RSI: 00002000000003c0 RDI: 0000000000000007
RBP: 00007fa2aed37ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa2aeedcfa0 R15: 00007ffde378b328
----------------
Code disassembly (best guess):
0: b6 f6 mov $0xf6,%dh
2: 48 b8 01 01 01 01 01 movabs $0x101010101010101,%rax
9: 01 01 01
c: 48 0f af c6 imul %rsi,%rax
10: f3 48 ab rep stos %rax,%es:(%rdi)
13: 89 d1 mov %edx,%ecx
15: f3 aa rep stos %al,%es:(%rdi)
17: 4c 89 c8 mov %r9,%rax
1a: c3 ret
1b: 90 nop
1c: 49 89 f9 mov %rdi,%r9
1f: 40 88 f0 mov %sil,%al
22: 48 89 d1 mov %rdx,%rcx
25: f3 aa rep stos %al,%es:(%rdi)
27: 4c 89 c8 mov %r9,%rax
* 2a: c3 ret <-- trapping instruction
2b: 90 nop
2c: 49 89 fa mov %rdi,%r10
2f: 40 0f b6 ce movzbl %sil,%ecx
33: 48 b8 01 01 01 01 01 movabs $0x101010101010101,%rax
3a: 01 01 01
3d: 48 rex.W
3e: 0f .byte 0xf
3f: af scas %es:(%rdi),%eax