rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-....: (1 GPs behind) idle=8e5/1/0x4000000000000000 softirq=12581/12582 fqs=5243
(detected by 0, t=10502 jiffies, g=14321, q=1815)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8806 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:asm_sysvec_irq_work+0x0/0x20 arch/x86/include/asm/idtentry.h:660
Code: 00 66 0f 1f 84 00 00 00 00 00 0f 01 ca 6a ff e8 36 02 00 00 48 89 e7 e8 fe 7f fa ff e9 e9 02 00 00 66 0f 1f 84 00 00 00 00 00 <0f> 01 ca 6a ff e8 16 02 00 00 48 89 e7 e8 ee 84 fa ff e9 c9 02 00
RSP: 0018:ffffc90000dc0d98 EFLAGS: 00000006
RAX: 0000000000000012 RBX: ffff8880b9d3a900 RCX: 1ffffffff1fb2d66
RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000
RBP: ffffffff8b98c780 R08: 0000000000000001 R09: ffffffff8fd5ca9f
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff8539aa00 R14: 0000000000000200 R15: ffffffff853958c0
FS: 00007f06c472c700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad1f92cef8 CR3: 000000006fbf0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__rcu_read_unlock+0xc4/0x570 kernel/rcu/tree_plugin.h:425
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e b6 01 00 00 8b 85 40 04 00 00 85 c0 75 54 <65> 48 8b 1c 25 40 70 02 00 48 8d bb 3c 04 00 00 48 b8 00 00 00 00
RSP: 0018:ffffc90000dc0dc0 EFLAGS: 00000206
rcu_read_unlock include/linux/rcupdate.h:720 [inline]
ieee80211_iterate_active_interfaces_atomic+0x92/0x180 net/mac80211/util.c:831
mac80211_hwsim_beacon+0xcd/0x1c0 drivers/net/wireless/mac80211_hwsim.c:1861
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:ext4_truncate+0x32c/0x1440 fs/ext4/inode.c:4152
Code: 00 00 00 fc ff df 4d 8b 6c 24 28 49 8d bd 78 06 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d2 0f 00 00 4d 8b ad 78 06 00 00 <48> b8 00 00 00 00 00 fc ff df 49 8d 7d 78 48 89 fa 48 c1 ea 03 0f
RSP: 0018:ffffc900028dfac0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 1ffff9200051bf5e RCX: ffffc90011dd7000
RDX: 1ffff110296090cf RSI: ffffffff8212845e RDI: ffff88814b048678
RBP: ffffc900028dfb78 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff82128450 R11: 0000000000000000 R12: ffff888028808c98
R13: ffff88814b04a000 R14: 0000000000000000 R15: ffff888028808a48
ext4_truncate_failed_write fs/ext4/truncate.h:22 [inline]
ext4_handle_inode_extension+0x4f7/0x8c0 fs/ext4/file.c:358
ext4_dio_write_iter fs/ext4/file.c:575 [inline]
ext4_file_write_iter+0x11e5/0x14e0 fs/ext4/file.c:679
call_write_iter include/linux/fs.h:2162 [inline]
new_sync_write+0x429/0x660 fs/read_write.c:503
vfs_write+0x7cd/0xae0 fs/read_write.c:590
ksys_write+0x12d/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f06c71f8ae9
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:00007f06c472c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f06c730c0e0 RCX: 00007f06c71f8ae9
RDX: 0000000000000012 RSI: 0000000020000240 RDI: 0000000000000004
RBP: 00007f06c7252f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffd429d21f R14: 00007f06c472c300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
7: 00 00
9: 0f 01 ca clac
c: 6a ff pushq $0xffffffffffffffff
e: e8 36 02 00 00 callq 0x249
13: 48 89 e7 mov %rsp,%rdi
16: e8 fe 7f fa ff callq 0xfffa8019
1b: e9 e9 02 00 00 jmpq 0x309
20: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
27: 00 00
* 29: 0f 01 ca clac <-- trapping instruction
2c: 6a ff pushq $0xffffffffffffffff
2e: e8 16 02 00 00 callq 0x249
33: 48 89 e7 mov %rsp,%rdi
36: e8 ee 84 fa ff callq 0xfffa8529
3b: e9 .byte 0xe9
3c: c9 leaveq
3d: 02 00 add (%rax),%al