=============================
[ BUG: Invalid wait context ]
6.13.0-rc4-syzkaller #0 Not tainted
-----------------------------
sshd/5849 is trying to lock:
ffff88802b63b0a0 (batched_entropy_u8.lock){..-.}-{3:3}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
ffff88802b63b0a0 (batched_entropy_u8.lock){..-.}-{3:3}, at: get_random_u8+0xef/0x7f0 drivers/char/random.c:551
other info that might help us debug this:
context-{2:2}
5 locks held by sshd/5849:
#0: ffff888044921bd8 (sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1623 [inline]
#0: ffff888044921bd8 (sk_lock-AF_INET){+.+.}-{0:0}, at: tcp_recvmsg+0x113/0x680 net/ipv4/tcp.c:2851
#1: ffffffff8ddbad40 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#1: ffffffff8ddbad40 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#1: ffffffff8ddbad40 (rcu_read_lock){....}-{1:3}, at: __ip_queue_xmit+0x73/0x1970 net/ipv4/ip_output.c:471
#2: ffffffff8ddbad40 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#2: ffffffff8ddbad40 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#2: ffffffff8ddbad40 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x364/0x2130 net/ipv4/ip_output.c:229
#3: ffff88802b63cc20 (bh_lock){+.-.}-{3:3}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
#3: ffff88802b63cc20 (bh_lock){+.-.}-{3:3}, at: napi_skb_cache_get+0x107/0x890 net/core/skbuff.c:351
#4: ffff88802b63ed18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:598
stack backtrace:
CPU: 2 UID: 0 PID: 5849 Comm: sshd Not tainted 6.13.0-rc4-syzkaller #0
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_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
check_wait_context kernel/locking/lockdep.c:4898 [inline]
__lock_acquire+0x878/0x3c40 kernel/locking/lockdep.c:5176
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
get_random_u8+0x107/0x7f0 drivers/char/random.c:551
get_random_u32_below include/linux/random.h:78 [inline]
kfence_guarded_alloc mm/kfence/core.c:421 [inline]
__kfence_alloc+0x4e8/0x15f0 mm/kfence/core.c:1136
kfence_alloc include/linux/kfence.h:129 [inline]
slab_alloc_node mm/slub.c:4152 [inline]
__kmalloc_cache_noprof+0x125/0x420 mm/slub.c:4324
kmalloc_noprof include/linux/slab.h:901 [inline]
add_stack_record_to_list mm/page_owner.c:172 [inline]
inc_stack_record_count mm/page_owner.c:214 [inline]
__set_page_owner+0x50f/0x790 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
prep_new_page mm/page_alloc.c:1566 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
__alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
alloc_pages_mpol_noprof+0x2c9/0x610 mm/mempolicy.c:2269
stack_depot_save_flags+0x8e0/0x9e0 lib/stackdepot.c:627
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
__kasan_record_aux_stack+0xba/0xd0 mm/kasan/generic.c:544
task_work_add+0xc0/0x3b0 kernel/task_work.c:77
task_tick_numa kernel/sched/fair.c:3616 [inline]
task_tick_fair+0x524/0x8e0 kernel/sched/fair.c:13101
sched_tick+0x1dd/0x4f0 kernel/sched/core.c:5652
update_process_times+0x19c/0x2d0 kernel/time/timer.c:2524
tick_sched_handle kernel/time/tick-sched.c:276 [inline]
tick_nohz_handler+0x376/0x530 kernel/time/tick-sched.c:297
__run_hrtimer kernel/time/hrtimer.c:1739 [inline]
__hrtimer_run_queues+0x5fb/0xae0 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5814
Code: b8 ff ff ff ff 65 0f c1 05 c0 33 8c 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
RSP: 0018:ffffc90000548960 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 1ffff920000a912d RCX: ffffffff817560be
RDX: 0000000000000001 RSI: ffffffff8b4cd560 RDI: ffffffff8bb17080
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2d36da0
R10: ffffffff969b6d07 R11: 0000000000000003 R12: 0000000000000000
R13: ffff88802b63cc20 R14: 0000000000000000 R15: 0000000000000000
local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
napi_skb_cache_get+0x11f/0x890 net/core/skbuff.c:351
__napi_build_skb net/core/skbuff.c:537 [inline]
napi_build_skb+0x1d/0x2a0 net/core/skbuff.c:559
e1000_clean_rx_irq+0x8e6/0x1040 drivers/net/ethernet/intel/e1000/e1000_main.c:4388
e1000_clean+0x9d6/0x2700 drivers/net/ethernet/intel/e1000/e1000_main.c:3807
__napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6883
napi_poll net/core/dev.c:6952 [inline]
net_rx_action+0xa94/0x1010 net/core/dev.c:7074
handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
do_softirq kernel/softirq.c:462 [inline]
do_softirq+0xb2/0xf0 kernel/softirq.c:449
__local_bh_enable_ip+0x100/0x120 kernel/softirq.c:389
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
__dev_queue_xmit+0x8b0/0x43e0 net/core/dev.c:4461
dev_queue_xmit include/linux/netdevice.h:3168 [inline]
neigh_hh_output include/net/neighbour.h:523 [inline]
neigh_output include/net/neighbour.h:537 [inline]
ip_finish_output2+0x1438/0x2130 net/ipv4/ip_output.c:236
__ip_finish_output net/ipv4/ip_output.c:314 [inline]
__ip_finish_output+0x49e/0x950 net/ipv4/ip_output.c:296
ip_finish_output+0x35/0x380 net/ipv4/ip_output.c:324
NF_HOOK_COND include/linux/netfilter.h:303 [inline]
ip_output+0x13b/0x2a0 net/ipv4/ip_output.c:434
dst_output include/net/dst.h:450 [inline]
ip_local_out+0x33e/0x4a0 net/ipv4/ip_output.c:130
__ip_queue_xmit+0x777/0x1970 net/ipv4/ip_output.c:536
__tcp_transmit_skb+0x2b27/0x3df0 net/ipv4/tcp_output.c:1468
__tcp_send_ack.part.0+0x390/0x6f0 net/ipv4/tcp_output.c:4272
__tcp_send_ack net/ipv4/tcp_output.c:4278 [inline]
tcp_send_ack+0x82/0xa0 net/ipv4/tcp_output.c:4278
__tcp_cleanup_rbuf+0x278/0x4b0 net/ipv4/tcp.c:1506
tcp_recvmsg_locked+0x124b/0x2780 net/ipv4/tcp.c:2822
tcp_recvmsg+0x12e/0x680 net/ipv4/tcp.c:2852
inet_recvmsg+0x12b/0x6a0 net/ipv4/af_inet.c:883
sock_recvmsg_nosec net/socket.c:1033 [inline]
sock_recvmsg+0x1b2/0x250 net/socket.c:1055
sock_read_iter+0x2bb/0x3b0 net/socket.c:1125
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0xa4c/0xbe0 fs/read_write.c:565
ksys_read+0x207/0x250 fs/read_write.c:708
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3ced16b6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff940fc918 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000040000 RCX: 00007fc3ced16b6a
RDX: 0000000000040000 RSI: 000055f9687cd480 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff940fc980 R14: 000055f9687a4ee0 R15: 00007fff940fc9f8
----------------
Code disassembly (best guess):
0: b8 ff ff ff ff mov $0xffffffff,%eax
5: 65 0f c1 05 c0 33 8c xadd %eax,%gs:0x7e8c33c0(%rip) # 0x7e8c33cd
c: 7e
d: 83 f8 01 cmp $0x1,%eax
10: 0f 85 d0 01 00 00 jne 0x1e6
16: 9c pushf
17: 58 pop %rax
18: f6 c4 02 test $0x2,%ah
1b: 0f 85 e5 01 00 00 jne 0x206
21: 48 85 ed test %rbp,%rbp
24: 0f 85 b6 01 00 00 jne 0x1e0
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 48 01 c3 add %rax,%rbx
37: 48 c7 03 00 00 00 00 movq $0x0,(%rbx)
3e: 48 rex.W
3f: c7 .byte 0xc7