loop3: detected capacity change from 0 to 28520
FAT-fs (loop3): Unrecognized mount option "sho" or missing value
loop3: detected capacity change from 0 to 28520
FAT-fs (loop3): Unrecognized mount option "sho" or missing value
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=8fa4/1/0x4000000000000000 softirq=619945/619945 fqs=0
(detected by 1, t=105002 jiffies, g=449941, q=2526 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 43200 Comm: syz-executor Tainted: G B 6.0.0-rc4-next-20220908 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:kasan_report+0x12/0x1c0
Code: 9c 02 e9 61 ff ff ff 48 83 c4 60 5b 5d 41 5c e9 b4 cf e7 02 0f 1f 40 00 41 57 41 56 41 55 41 54 55 53 48 83 ec 68 9c 8f 04 24 <0f> 01 ca 65 4c 8b 3c 25 c0 6e 02 00 41 8b 87 f8 13 00 00 85 c0 0f
RSP: 0018:ffff88801d427958 EFLAGS: 00000092
RAX: 00000000000000fa RBX: 000000000f7a17a0 RCX: ffffffff8425cbbd
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880183dca20
RBP: ffff8880183dca20 R08: 0000000000000000 R09: ffff8880183dca23
R10: ffffed100307b944 R11: 0000000000000001 R12: 0000000000000003
R13: ffffed100307b944 R14: 0000000000000001 R15: 1ffff11003a84f40
FS: 0000555555a58400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd9b67fe18 CR3: 0000000044b44000 CR4: 0000000000350ef0
Call Trace:
queued_spin_lock_slowpath+0xadd/0xc80
do_raw_spin_lock+0x1dc/0x260
kmemleak_scan+0x21d/0x16f0
kmemleak_write+0x570/0x680
full_proxy_write+0x11d/0x190
vfs_write+0x2cb/0xd90
ksys_write+0x127/0x250
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f307c6b55c3
Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007ffc9671f228 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffc9671f868 RCX: 00007f307c6b55c3
RDX: 0000000000000004 RSI: 00007f307c76bed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 000000000000084d R09: 00007ffc96745080
R10: 00007ffc96745090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007ffc96720ef1 R14: 0000000000000000 R15: 0000000000206eb5
rcu: rcu_preempt kthread timer wakeup didn't happen for 104999 jiffies! g449941 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=99505
rcu: rcu_preempt kthread starved for 105002 jiffies! g449941 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:29696 pid:14 ppid:2 flags:0x00004000
Call Trace:
__schedule+0x893/0x24a0
schedule+0xda/0x1b0
schedule_timeout+0x18f/0x480
rcu_gp_fqs_loop+0x1c4/0xc50
rcu_gp_kthread+0x3c4/0x5a0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 43200 Comm: syz-executor Tainted: G B 6.0.0-rc4-next-20220908 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:kasan_report+0x15/0x1c0
Code: 61 ff ff ff 48 83 c4 60 5b 5d 41 5c e9 b4 cf e7 02 0f 1f 40 00 41 57 41 56 41 55 41 54 55 53 48 83 ec 68 9c 8f 04 24 0f 01 ca <65> 4c 8b 3c 25 c0 6e 02 00 41 8b 87 f8 13 00 00 85 c0 0f 85 34 01
RSP: 0018:ffff88801d427958 EFLAGS: 00000092
RAX: 00000000000000fa RBX: 000000000f7a17a0 RCX: ffffffff8425cbbd
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880183dca20
RBP: ffff8880183dca20 R08: 0000000000000000 R09: ffff8880183dca23
R10: ffffed100307b944 R11: 0000000000000001 R12: 0000000000000003
R13: ffffed100307b944 R14: 0000000000000001 R15: 1ffff11003a84f40
FS: 0000555555a58400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd9b67fe18 CR3: 0000000044b44000 CR4: 0000000000350ef0
Call Trace:
queued_spin_lock_slowpath+0xadd/0xc80
do_raw_spin_lock+0x1dc/0x260
kmemleak_scan+0x21d/0x16f0
kmemleak_write+0x570/0x680
full_proxy_write+0x11d/0x190
vfs_write+0x2cb/0xd90
ksys_write+0x127/0x250
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f307c6b55c3
Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007ffc9671f228 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffc9671f868 RCX: 00007f307c6b55c3
RDX: 0000000000000004 RSI: 00007f307c76bed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 000000000000084d R09: 00007ffc96745080
R10: 00007ffc96745090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007ffc96720ef1 R14: 0000000000000000 R15: 0000000000206eb5
----------------
Code disassembly (best guess), 2 bytes skipped:
0: e9 61 ff ff ff jmpq 0xffffff66
5: 48 83 c4 60 add $0x60,%rsp
9: 5b pop %rbx
a: 5d pop %rbp
b: 41 5c pop %r12
d: e9 b4 cf e7 02 jmpq 0x2e7cfc6
12: 0f 1f 40 00 nopl 0x0(%rax)
16: 41 57 push %r15
18: 41 56 push %r14
1a: 41 55 push %r13
1c: 41 54 push %r12
1e: 55 push %rbp
1f: 53 push %rbx
20: 48 83 ec 68 sub $0x68,%rsp
24: 9c pushfq
25: 8f 04 24 popq (%rsp)
* 28: 0f 01 ca clac <-- trapping instruction
2b: 65 4c 8b 3c 25 c0 6e mov %gs:0x26ec0,%r15
32: 02 00
34: 41 8b 87 f8 13 00 00 mov 0x13f8(%r15),%eax
3b: 85 c0 test %eax,%eax
3d: 0f .byte 0xf