BUG: soft lockup in process_srcu

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: cefc335374d2 ANDROID: ABI: Update symbols to unisoc whitel..
git tree: android12-5.4
console output: https://syzkaller.appspot.com/x/log.txt?x=1595e28af00000
kernel config: https://syzkaller.appspot.com/x/.config?x=52d27223453e9377
dashboard link: https://syzkaller.appspot.com/bug?extid=af8842a8428d79d47066
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+af8842...@syzkaller.appspotmail.com

watchdog: BUG: soft lockup - CPU#0 stuck for 3513329329s! [kworker/0:4:349]
Modules linked in:
CPU: 0 PID: 349 Comm: kworker/0:4 Not tainted 5.4.180-syzkaller-00005-gcefc335374d2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: rcu_gp process_srcu
RIP: 0010:preempt_count_add+0x0/0x180 kernel/sched/core.c:3998
Code: e8 c5 d9 49 00 e9 36 ff ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 40 ff ff ff 48 89 ef e8 a8 d9 49 00 e9 33 ff ff ff 0f 1f 00 <41> 57 41 56 53 89 fb 48 c7 c0 40 f9 98 86 48 c1 e8 03 49 bf 00 00
RSP: 0018:ffff8881bbcffbb8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 0000000080000000 RBX: 000000040c308ae0 RCX: 0000000000000001
RDX: 0000000000000004 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00000000000029c2 R08: ffffffff821c4664 R09: ffffed103779ff84
R10: ffffed103779ff84 R11: 1ffff1103779ff83 R12: 0000000000000121
R13: 1ffffffff0bcd721 R14: 0000000000002afa R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2bca116718 CR3: 00000001e10a4000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
delay_tsc+0x71/0xe0 arch/x86/lib/delay.c:68
try_check_zero+0x2e2/0x350 kernel/rcu/srcutree.c:708
srcu_advance_state kernel/rcu/srcutree.c:1146 [inline]
process_srcu+0x1b5/0xd40 kernel/rcu/srcutree.c:1241
process_one_work+0x6ca/0xc40 kernel/workqueue.c:2287
worker_thread+0xae0/0x1440 kernel/workqueue.c:2433
kthread+0x2d8/0x360 kernel/kthread.c:288
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1665 Comm: syz-executor.5 Not tainted 5.4.180-syzkaller-00005-gcefc335374d2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__read_once_size include/linux/compiler.h:268 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:109 [inline]
RIP: 0010:smp_call_function_single+0x1f2/0x410 kernel/smp.c:311
Code: 44 8b 64 24 38 44 89 e6 83 e6 01 31 ff e8 86 23 0a 00 41 83 e4 01 75 10 e8 cb 1f 0a 00 e9 b8 00 00 00 66 0f 1f 44 00 00 f3 90 <42> 0f b6 04 3b 84 c0 75 15 f7 44 24 38 01 00 00 00 0f 84 94 00 00
RSP: 0018:ffff8881e2bd7be0 EFLAGS: 00000246
RAX: ffffffff81561f3e RBX: 1ffff1103c57af83 RCX: 0000000000040000
RDX: ffffc90002355000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8881e2bd7c88 R08: ffffffff81561f0a R09: ffffed103edcb1a1
R10: ffffed103edcb1a1 R11: 1ffff1103edcb1a0 R12: 0000000000000001
R13: ffff8881e2bd7c18 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007fd6c3069700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020aef000 CR3: 00000001c10b0000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
wrmsr_safe_on_cpu+0xab/0x170 arch/x86/lib/msr-smp.c:204
msr_write+0x174/0x210 arch/x86/kernel/msr.c:95
do_loop_readv_writev fs/read_write.c:713 [inline]
do_iter_write+0x3dc/0x570 fs/read_write.c:972
vfs_writev fs/read_write.c:1015 [inline]
do_pwritev+0x252/0x440 fs/read_write.c:1112
do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fd6c3ef30e9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd6c3069168 EFLAGS: 00000246 ORIG_RAX: 0000000000000128
RAX: ffffffffffffffda RBX: 00007fd6c4005f60 RCX: 00007fd6c3ef30e9
RDX: 0000000000000002 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007fd6c3f4d08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcdcaab02f R14: 00007fd6c3069300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: e8 c5 d9 49 00 callq 0x49d9ca
5: e9 36 ff ff ff jmpq 0xffffff40
a: 89 e9 mov %ebp,%ecx
c: 80 e1 07 and $0x7,%cl
f: 80 c1 03 add $0x3,%cl
12: 38 c1 cmp %al,%cl
14: 0f 8c 40 ff ff ff jl 0xffffff5a
1a: 48 89 ef mov %rbp,%rdi
1d: e8 a8 d9 49 00 callq 0x49d9ca
22: e9 33 ff ff ff jmpq 0xffffff5a
27: 0f 1f 00 nopl (%rax)
* 2a: 41 57 push %r15 <-- trapping instruction
2c: 41 56 push %r14
2e: 53 push %rbx
2f: 89 fb mov %edi,%ebx
31: 48 c7 c0 40 f9 98 86 mov $0xffffffff8698f940,%rax
38: 48 c1 e8 03 shr $0x3,%rax
3c: 49 rex.WB
3d: bf .byte 0xbf


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.