netlink: 56 bytes leftover after parsing attributes in process `syz-executor.5'.
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
6.1.45-syzkaller #0 Not tainted
-----------------------------------------------------
syz-executor.5/22558 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire:
ffff800015b3c360 (fs_reclaim){+.+.}-{0:0}, at: might_alloc include/linux/sched/mm.h:271 [inline]
ffff800015b3c360 (fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook mm/slab.h:710 [inline]
ffff800015b3c360 (fs_reclaim){+.+.}-{0:0}, at: slab_alloc_node mm/slub.c:3318 [inline]
ffff800015b3c360 (fs_reclaim){+.+.}-{0:0}, at: __kmem_cache_alloc_node+0x58/0x388 mm/slub.c:3437
and this task is already holding:
ffff0000dd1dc908 (&sch->q.lock){+.-.}-{2:2}, at: sch_tree_lock+0x120/0x1d4
which would create a new lock dependency:
(&sch->q.lock){+.-.}-{2:2} -> (fs_reclaim){+.+.}-{0:0}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&sch->q.lock){+.-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:350 [inline]
dev_requeue_skb+0x6cc/0x734 net/sched/sch_generic.c:148
sch_direct_xmit+0x310/0x548
__dev_xmit_skb net/core/dev.c:3822 [inline]
__dev_queue_xmit+0x1658/0x38d8 net/core/dev.c:4227
dev_queue_xmit include/linux/netdevice.h:3021 [inline]
neigh_hh_output include/net/neighbour.h:528 [inline]
neigh_output include/net/neighbour.h:542 [inline]
ip_finish_output2+0xc6c/0x11b4 net/ipv4/ip_output.c:228
__ip_finish_output+0x1b0/0x458
ip_finish_output+0x40/0x268 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0x330/0x49c net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
__ip_queue_xmit+0xe8c/0x1a00 net/ipv4/ip_output.c:532
ip_queue_xmit+0x5c/0x78 net/ipv4/ip_output.c:546
__tcp_transmit_skb+0x1938/0x31fc net/ipv4/tcp_output.c:1402
tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline]
tcp_write_xmit+0x131c/0x4e2c net/ipv4/tcp_output.c:2696
__tcp_push_pending_frames+0x98/0x228 net/ipv4/tcp_output.c:2880
tcp_push_pending_frames include/net/tcp.h:1958 [inline]
tcp_data_snd_check net/ipv4/tcp_input.c:5504 [inline]
tcp_rcv_established+0xae0/0x1fe0 net/ipv4/tcp_input.c:6013
tcp_v4_do_rcv+0x390/0xb08 net/ipv4/tcp_ipv4.c:1677
tcp_v4_rcv+0x20e4/0x2818 net/ipv4/tcp_ipv4.c:2098
ip_protocol_deliver_rcu+0x340/0x764 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x23c/0x46c net/ipv4/ip_input.c:233
NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302
ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:454 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:580 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:630 [inline]
ip_sublist_rcv+0x8d0/0xbf4 net/ipv4/ip_input.c:638
ip_list_rcv+0x3e8/0x43c net/ipv4/ip_input.c:673
__netif_receive_skb_list_ptype net/core/dev.c:5539 [inline]
__netif_receive_skb_list_core+0x5cc/0x754 net/core/dev.c:5587
__netif_receive_skb_list net/core/dev.c:5639 [inline]
netif_receive_skb_list_internal+0x810/0xb2c net/core/dev.c:5730
gro_normal_list include/net/gro.h:433 [inline]
napi_complete_done+0x258/0x60c net/core/dev.c:6071
gve_napi_poll+0x130/0x2a8 drivers/net/ethernet/google/gve/gve_main.c:214
__napi_poll+0xb4/0x3f0 net/core/dev.c:6505
napi_poll net/core/dev.c:6572 [inline]
net_rx_action+0x5cc/0xd3c net/core/dev.c:6683
__do_softirq+0x30c/0xea0 kernel/softirq.c:571
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x28c/0x534 kernel/softirq.c:650
irq_exit_rcu+0x14/0x84 kernel/softirq.c:662
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:577
access_ok arch/arm64/include/asm/uaccess.h:46 [inline]
__clear_user arch/arm64/include/asm/uaccess.h:438 [inline]
xt_data_to_user+0x1b0/0x2e8 net/netfilter/x_tables.c:319
xt_target_to_user+0x120/0x1c0 net/netfilter/x_tables.c:344
copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:877 [inline]
get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
do_ip6t_get_ctl+0x106c/0x1700 net/ipv6/netfilter/ip6_tables.c:1671
nf_getsockopt+0x264/0x284 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x2dc/0x444 net/ipv6/ipv6_sockglue.c:1513
tcp_getsockopt+0xcc/0xe8 net/ipv4/tcp.c:4406
sock_common_getsockopt+0xa8/0xc4 net/core/sock.c:3637
__sys_getsockopt+0x1e8/0x484 net/socket.c:2296
__do_sys_getsockopt net/socket.c:2311 [inline]
__se_sys_getsockopt net/socket.c:2308 [inline]
__arm64_sys_getsockopt+0xb8/0xd4 net/socket.c:2308
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
to a SOFTIRQ-irq-unsafe lock:
(fs_reclaim){+.+.}-{0:0}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__fs_reclaim_acquire mm/page_alloc.c:4683 [inline]
fs_reclaim_acquire+0x90/0x12c mm/page_alloc.c:4697
might_alloc include/linux/sched/mm.h:271 [inline]
slab_pre_alloc_hook mm/slab.h:710 [inline]
slab_alloc_node mm/slub.c:3318 [inline]
__kmem_cache_alloc_node+0x58/0x388 mm/slub.c:3437
kmalloc_node_trace+0x44/0x90 mm/slab_common.c:1058
kmalloc_node include/linux/slab.h:575 [inline]
kzalloc_node include/linux/slab.h:700 [inline]
alloc_worker kernel/workqueue.c:1843 [inline]
init_rescuer+0xa4/0x264 kernel/workqueue.c:4272
workqueue_init+0x298/0x5b4 kernel/workqueue.c:6101
kernel_init_freeable+0x33c/0x528 init/main.c:1603
kernel_init+0x24/0x29c init/main.c:1508
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(fs_reclaim);
local_irq_disable();
lock(&sch->q.lock);
lock(fs_reclaim);
<Interrupt>
lock(&sch->q.lock);
*** DEADLOCK ***
2 locks held by syz-executor.5/22558:
#0: ffff800017e6fdc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
#0: ffff800017e6fdc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e8/0xd94 net/core/rtnetlink.c:6104
#1: ffff0000dd1dc908 (&sch->q.lock){+.-.}-{2:2}, at: sch_tree_lock+0x120/0x1d4
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&sch->q.lock){+.-.}-{2:2} {
HARDIRQ-ON-W at:
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x54/0x6c kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:355 [inline]
dev_reset_queue+0x130/0x1fc net/sched/sch_generic.c:1291
netdev_for_each_tx_queue include/linux/netdevice.h:2453 [inline]
dev_deactivate_many+0x540/0xa8c net/sched/sch_generic.c:1359
dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1382
linkwatch_do_dev+0x29c/0x3a4 net/core/link_watch.c:166
__linkwatch_run_queue+0x3a0/0x700 net/core/link_watch.c:221
linkwatch_event+0x58/0x68 net/core/link_watch.c:264
process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292
worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
kthread+0x250/0x2d8 kernel/kthread.c:376
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
IN-SOFTIRQ-W at:
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:350 [inline]
dev_requeue_skb+0x6cc/0x734 net/sched/sch_generic.c:148
sch_direct_xmit+0x310/0x548
__dev_xmit_skb net/core/dev.c:3822 [inline]
__dev_queue_xmit+0x1658/0x38d8 net/core/dev.c:4227
dev_queue_xmit include/linux/netdevice.h:3021 [inline]
neigh_hh_output include/net/neighbour.h:528 [inline]
neigh_output include/net/neighbour.h:542 [inline]
ip_finish_output2+0xc6c/0x11b4 net/ipv4/ip_output.c:228
__ip_finish_output+0x1b0/0x458
ip_finish_output+0x40/0x268 net/ipv4/ip_output.c:316
NF_HOOK_COND include/linux/netfilter.h:291 [inline]
ip_output+0x330/0x49c net/ipv4/ip_output.c:430
dst_output include/net/dst.h:444 [inline]
ip_local_out net/ipv4/ip_output.c:126 [inline]
__ip_queue_xmit+0xe8c/0x1a00 net/ipv4/ip_output.c:532
ip_queue_xmit+0x5c/0x78 net/ipv4/ip_output.c:546
__tcp_transmit_skb+0x1938/0x31fc net/ipv4/tcp_output.c:1402
tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline]
tcp_write_xmit+0x131c/0x4e2c net/ipv4/tcp_output.c:2696
__tcp_push_pending_frames+0x98/0x228 net/ipv4/tcp_output.c:2880
tcp_push_pending_frames include/net/tcp.h:1958 [inline]
tcp_data_snd_check net/ipv4/tcp_input.c:5504 [inline]
tcp_rcv_established+0xae0/0x1fe0 net/ipv4/tcp_input.c:6013
tcp_v4_do_rcv+0x390/0xb08 net/ipv4/tcp_ipv4.c:1677
tcp_v4_rcv+0x20e4/0x2818 net/ipv4/tcp_ipv4.c:2098
ip_protocol_deliver_rcu+0x340/0x764 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x23c/0x46c net/ipv4/ip_input.c:233
NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302
ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:254
dst_input include/net/dst.h:454 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:580 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:630 [inline]
ip_sublist_rcv+0x8d0/0xbf4 net/ipv4/ip_input.c:638
ip_list_rcv+0x3e8/0x43c net/ipv4/ip_input.c:673
__netif_receive_skb_list_ptype net/core/dev.c:5539 [inline]
__netif_receive_skb_list_core+0x5cc/0x754 net/core/dev.c:5587
__netif_receive_skb_list net/core/dev.c:5639 [inline]
netif_receive_skb_list_internal+0x810/0xb2c net/core/dev.c:5730
gro_normal_list include/net/gro.h:433 [inline]
napi_complete_done+0x258/0x60c net/core/dev.c:6071
gve_napi_poll+0x130/0x2a8 drivers/net/ethernet/google/gve/gve_main.c:214
__napi_poll+0xb4/0x3f0 net/core/dev.c:6505
napi_poll net/core/dev.c:6572 [inline]
net_rx_action+0x5cc/0xd3c net/core/dev.c:6683
__do_softirq+0x30c/0xea0 kernel/softirq.c:571
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x28c/0x534 kernel/softirq.c:650
irq_exit_rcu+0x14/0x84 kernel/softirq.c:662
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:577
access_ok arch/arm64/include/asm/uaccess.h:46 [inline]
__clear_user arch/arm64/include/asm/uaccess.h:438 [inline]
xt_data_to_user+0x1b0/0x2e8 net/netfilter/x_tables.c:319
xt_target_to_user+0x120/0x1c0 net/netfilter/x_tables.c:344
copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:877 [inline]
get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
do_ip6t_get_ctl+0x106c/0x1700 net/ipv6/netfilter/ip6_tables.c:1671
nf_getsockopt+0x264/0x284 net/netfilter/nf_sockopt.c:116
ipv6_getsockopt+0x2dc/0x444 net/ipv6/ipv6_sockglue.c:1513
tcp_getsockopt+0xcc/0xe8 net/ipv4/tcp.c:4406
sock_common_getsockopt+0xa8/0xc4 net/core/sock.c:3637
__sys_getsockopt+0x1e8/0x484 net/socket.c:2296
__do_sys_getsockopt net/socket.c:2311 [inline]
__se_sys_getsockopt net/socket.c:2308 [inline]
__arm64_sys_getsockopt+0xb8/0xd4 net/socket.c:2308
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
INITIAL USE at:
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x54/0x6c kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:355 [inline]
dev_reset_queue+0x130/0x1fc net/sched/sch_generic.c:1291
netdev_for_each_tx_queue include/linux/netdevice.h:2453 [inline]
dev_deactivate_many+0x540/0xa8c net/sched/sch_generic.c:1359
dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1382
linkwatch_do_dev+0x29c/0x3a4 net/core/link_watch.c:166
__linkwatch_run_queue+0x3a0/0x700 net/core/link_watch.c:221
linkwatch_event+0x58/0x68 net/core/link_watch.c:264
process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292
worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
kthread+0x250/0x2d8 kernel/kthread.c:376
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
}
... key at: [<ffff800019d20ae0>] qdisc_alloc.__key+0x0/0x20
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (fs_reclaim){+.+.}-{0:0} {
HARDIRQ-ON-W at:
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__fs_reclaim_acquire mm/page_alloc.c:4683 [inline]
fs_reclaim_acquire+0x90/0x12c mm/page_alloc.c:4697
might_alloc include/linux/sched/mm.h:271 [inline]
slab_pre_alloc_hook mm/slab.h:710 [inline]
slab_alloc_node mm/slub.c:3318 [inline]
__kmem_cache_alloc_node+0x58/0x388 mm/slub.c:3437
kmalloc_node_trace+0x44/0x90 mm/slab_common.c:1058
kmalloc_node include/linux/slab.h:575 [inline]
kzalloc_node include/linux/slab.h:700 [inline]
alloc_worker kernel/workqueue.c:1843 [inline]
init_rescuer+0xa4/0x264 kernel/workqueue.c:4272
workqueue_init+0x298/0x5b4 kernel/workqueue.c:6101
kernel_init_freeable+0x33c/0x528 init/main.c:1603
kernel_init+0x24/0x29c init/main.c:1508
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
SOFTIRQ-ON-W at:
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__fs_reclaim_acquire mm/page_alloc.c:4683 [inline]
fs_reclaim_acquire+0x90/0x12c mm/page_alloc.c:4697
might_alloc include/linux/sched/mm.h:271 [inline]
slab_pre_alloc_hook mm/slab.h:710 [inline]
slab_alloc_node mm/slub.c:3318 [inline]
__kmem_cache_alloc_node+0x58/0x388 mm/slub.c:3437
kmalloc_node_trace+0x44/0x90 mm/slab_common.c:1058
kmalloc_node include/linux/slab.h:575 [inline]
kzalloc_node include/linux/slab.h:700 [inline]
alloc_worker kernel/workqueue.c:1843 [inline]
init_rescuer+0xa4/0x264 kernel/workqueue.c:4272
workqueue_init+0x298/0x5b4 kernel/workqueue.c:6101
kernel_init_freeable+0x33c/0x528 init/main.c:1603
kernel_init+0x24/0x29c init/main.c:1508
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
INITIAL USE at:
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__fs_reclaim_acquire mm/page_alloc.c:4683 [inline]
fs_reclaim_acquire+0x90/0x12c mm/page_alloc.c:4697
might_alloc include/linux/sched/mm.h:271 [inline]
slab_pre_alloc_hook mm/slab.h:710 [inline]
slab_alloc_node mm/slub.c:3318 [inline]
__kmem_cache_alloc_node+0x58/0x388 mm/slub.c:3437
kmalloc_node_trace+0x44/0x90 mm/slab_common.c:1058
kmalloc_node include/linux/slab.h:575 [inline]
kzalloc_node include/linux/slab.h:700 [inline]
alloc_worker kernel/workqueue.c:1843 [inline]
init_rescuer+0xa4/0x264 kernel/workqueue.c:4272
workqueue_init+0x298/0x5b4 kernel/workqueue.c:6101
kernel_init_freeable+0x33c/0x528 init/main.c:1603
kernel_init+0x24/0x29c init/main.c:1508
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
}
... key at: [<ffff800015b3c360>] __fs_reclaim_map+0x0/0xe0
... acquired at:
__fs_reclaim_acquire mm/page_alloc.c:4683 [inline]
fs_reclaim_acquire+0x90/0x12c mm/page_alloc.c:4697
might_alloc include/linux/sched/mm.h:271 [inline]
slab_pre_alloc_hook mm/slab.h:710 [inline]
slab_alloc_node mm/slub.c:3318 [inline]
__kmem_cache_alloc_node+0x58/0x388 mm/slub.c:3437
__do_kmalloc_node mm/slab_common.c:954 [inline]
__kmalloc_node+0xcc/0x1d0 mm/slab_common.c:962
kmalloc_node include/linux/slab.h:579 [inline]
kvmalloc_node+0x84/0x1e4 mm/util.c:581
kvmalloc include/linux/slab.h:706 [inline]
get_dist_table+0xa0/0x354 net/sched/sch_netem.c:788
netem_change+0x754/0x1900 net/sched/sch_netem.c:985
netem_init+0x54/0xb8 net/sched/sch_netem.c:1072
qdisc_create+0x70c/0xe64 net/sched/sch_api.c:1314
tc_modify_qdisc+0x9f0/0x1840
rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6107
netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2525
rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6125
netlink_unicast_kernel net/netlink/af_netlink.c:1328 [inline]
netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1354
netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1903
sock_sendmsg_nosec net/socket.c:716 [inline]
sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x558/0x844 net/socket.c:2482
___sys_sendmsg net/socket.c:2536 [inline]
__sys_sendmsg+0x26c/0x33c net/socket.c:2565
__do_sys_sendmsg net/socket.c:2574 [inline]
__se_sys_sendmsg net/socket.c:2572 [inline]
__arm64_sys_sendmsg+0x80/0x94 net/socket.c:2572
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
stack backtrace:
CPU: 1 PID: 22558 Comm: syz-executor.5 Not tainted 6.1.45-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call trace:
dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
dump_stack+0x1c/0x58 lib/dump_stack.c:113
__lock_acquire+0x6310/0x764c kernel/locking/lockdep.c:5056
lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
__fs_reclaim_acquire mm/page_alloc.c:4683 [inline]
fs_reclaim_acquire+0x90/0x12c mm/page_alloc.c:4697
might_alloc include/linux/sched/mm.h:271 [inline]
slab_pre_alloc_hook mm/slab.h:710 [inline]
slab_alloc_node mm/slub.c:3318 [inline]
__kmem_cache_alloc_node+0x58/0x388 mm/slub.c:3437
__do_kmalloc_node mm/slab_common.c:954 [inline]
__kmalloc_node+0xcc/0x1d0 mm/slab_common.c:962
kmalloc_node include/linux/slab.h:579 [inline]
kvmalloc_node+0x84/0x1e4 mm/util.c:581
kvmalloc include/linux/slab.h:706 [inline]
get_dist_table+0xa0/0x354 net/sched/sch_netem.c:788
netem_change+0x754/0x1900 net/sched/sch_netem.c:985
netem_init+0x54/0xb8 net/sched/sch_netem.c:1072
qdisc_create+0x70c/0xe64 net/sched/sch_api.c:1314
tc_modify_qdisc+0x9f0/0x1840
rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6107
netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2525
rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6125
netlink_unicast_kernel net/netlink/af_netlink.c:1328 [inline]
netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1354
netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1903
sock_sendmsg_nosec net/socket.c:716 [inline]
sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x558/0x844 net/socket.c:2482
___sys_sendmsg net/socket.c:2536 [inline]
__sys_sendmsg+0x26c/0x33c net/socket.c:2565
__do_sys_sendmsg net/socket.c:2574 [inline]
__se_sys_sendmsg net/socket.c:2572 [inline]
__arm64_sys_sendmsg+0x80/0x94 net/socket.c:2572
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 22558, name: syz-executor.5
preempt_count: 201, expected: 0
RCU nest depth: 0, expected: 0
INFO: lockdep is turned off.
Preemption disabled at:
[<ffff8000106c9e9c>] sch_tree_lock+0x120/0x1d4
CPU: 1 PID: 22558 Comm: syz-executor.5 Not tainted 6.1.45-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call trace:
dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
dump_stack+0x1c/0x58 lib/dump_stack.c:113
__might_resched+0x37c/0x4d8 kernel/sched/core.c:9941
__might_sleep+0x90/0xe4 kernel/sched/core.c:9870
might_alloc include/linux/sched/mm.h:274 [inline]
slab_pre_alloc_hook mm/slab.h:710 [inline]
slab_alloc_node mm/slub.c:3318 [inline]
__kmem_cache_alloc_node+0x74/0x388 mm/slub.c:3437
__do_kmalloc_node mm/slab_common.c:954 [inline]
__kmalloc_node+0xcc/0x1d0 mm/slab_common.c:962
kmalloc_node include/linux/slab.h:579 [inline]
kvmalloc_node+0x84/0x1e4 mm/util.c:581
kvmalloc include/linux/slab.h:706 [inline]
get_dist_table+0xa0/0x354 net/sched/sch_netem.c:788
netem_change+0x754/0x1900 net/sched/sch_netem.c:985
netem_init+0x54/0xb8 net/sched/sch_netem.c:1072
qdisc_create+0x70c/0xe64 net/sched/sch_api.c:1314
tc_modify_qdisc+0x9f0/0x1840
rtnetlink_rcv_msg+0x72c/0xd94 net/core/rtnetlink.c:6107
netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2525
rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6125
netlink_unicast_kernel net/netlink/af_netlink.c:1328 [inline]
netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1354
netlink_sendmsg+0x834/0xb18 net/netlink/af_netlink.c:1903
sock_sendmsg_nosec net/socket.c:716 [inline]
sock_sendmsg net/socket.c:736 [inline]
____sys_sendmsg+0x558/0x844 net/socket.c:2482
___sys_sendmsg net/socket.c:2536 [inline]
__sys_sendmsg+0x26c/0x33c net/socket.c:2565
__do_sys_sendmsg net/socket.c:2574 [inline]
__se_sys_sendmsg net/socket.c:2572 [inline]
__arm64_sys_sendmsg+0x80/0x94 net/socket.c:2572
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581