------------[ cut here ]------------
WARNING: CPU: 1 PID: 1853 at kernel/rcu/tree_stall.h:824 rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:816
Modules linked in:
CPU: 1 PID: 1853 Comm: syz-executor.2 Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_check_gp_start_stall.part.0+0x325/0x4b0 kernel/rcu/tree_stall.h:824
Code: 0f 88 fa 00 00 00 be 04 00 00 00 48 c7 c7 20 65 e5 8f e8 ee b3 57 00 b8 01 00 00 00 87 05 03 07 85 0e 85 c0 0f 85 c9 00 00 00 <0f> 0b 48 81 fd 00 c9 f7 8b 48 c7 c3 8c db c5 8d 74 58 48 b8 00 00
RSP: 0018:ffffc90000dc0e50 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000010003cfd9 RCX: ffffffff81605e12
RDX: fffffbfff1fcaca4 RSI: 0000000000000004 RDI: ffffffff8fe56520
RBP: ffffffff8bf7c900 R08: 0000000000000001 R09: 0000000000000003
R10: fffffbfff1fcaca4 R11: 1ffff110173a6c16 R12: 1ffffffff1781e30
R13: 0000000000000246 R14: ffff8880b9d35fd2 R15: ffff8880b9d36058
FS:  00007fd7c724a700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4cc4e5fff8 CR3: 000000007ffce000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rcu_check_gp_start_stall kernel/rcu/tree_stall.h:787 [inline]
 rcu_core+0x4ec/0x12f0 kernel/rcu/tree.c:2789
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:schedule_debug kernel/sched/core.c:4821 [inline]
RIP: 0010:__schedule+0x136/0x21b0 kernel/sched/core.c:4967
Code: 0f 1b 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7d 20 4c 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d8 1b 00 00 49 81 3f 9d 6e ac 57 <0f> 85 55 20 00 00 49 8d 45 18 84 db 48 89 85 68 ff ff ff 75 28 48
RSP: 0018:ffffc90001ccf1e0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff92000399e44
RDX: 1ffff92000399000 RSI: 0000000000000001 RDI: ffff88805f588020
RBP: ffffc90001ccf2a8 R08: 0000000000000001 R09: ffffffff8fac78c7
R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880b9d35180
R13: ffff88805f588000 R14: 0000000000035180 R15: ffffc90001cc8000
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5530
 irqentry_exit_cond_resched kernel/entry/common.c:392 [inline]
 irqentry_exit_cond_resched kernel/entry/common.c:384 [inline]
 irqentry_exit+0x7a/0xa0 kernel/entry/common.c:428
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:rtnl_fill_link_af net/core/rtnetlink.c:1626 [inline]
RIP: 0010:rtnl_fill_ifinfo+0x20d5/0x3e10 net/core/rtnetlink.c:1815
Code: 00 00 4c 89 7c 24 20 4d 89 f7 49 bd 00 00 00 00 00 fc ff df 48 89 44 24 48 48 c1 e8 03 4c 01 e8 48 89 44 24 40 e9 c2 00 00 00 <e8> 86 92 6f fa 31 ff 44 89 e6 e8 2c 9a 6f fa 45 85 e4 0f 88 77 09
RSP: 0018:ffffc90001ccf388 EFLAGS: 00000213
RAX: 0000000000000000 RBX: ffffffff8dc75e20 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88805f588000 RDI: 0000000000000003
RBP: ffff88808b8c86f8 R08: 00000000ffffffc3 R09: ffff88808b8c871c
R10: ffffffff8704654c R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8dc75e38 R15: ffff88808d3d63c0
 rtnl_dump_ifinfo+0xadb/0x1460 net/core/rtnetlink.c:2128
 netlink_dump+0x4b9/0xb70 net/netlink/af_netlink.c:2276
 netlink_recvmsg+0xa7d/0xee0 net/netlink/af_netlink.c:2010
 sock_recvmsg_nosec net/socket.c:888 [inline]
 sock_recvmsg net/socket.c:906 [inline]
 sock_recvmsg net/socket.c:902 [inline]
 ____sys_recvmsg+0x2c4/0x600 net/socket.c:2569
 ___sys_recvmsg+0x127/0x200 net/socket.c:2611
 __sys_recvmsg+0xe2/0x1a0 net/socket.c:2641
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd7c724a188 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 00000000004665f9
RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000004
RBP: 00000000004bfbb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffeeb68da0f R14: 00007fd7c724a300 R15: 0000000000022000