Extracting prog: 4m31.557875673s
Minimizing prog: 13m59.342990916s
Simplifying prog options: 0s
Extracting C: 41.832531386s
Simplifying C: 9m14.921223553s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{&(0x7f0000000140)="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", 0x20000}, {0x0, 0x20000}], 0x2)

program did not crash
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{&(0x7f0000000140)="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", 0x20000}, {0x0, 0x20000}], 0x2)

program crashed: possible deadlock in blkdev_buffered_write
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=2m7.015096164s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb
detailed listing:
executing program 0:
openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)

program did not crash
testing program (duration=2m7.015096164s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): writev
detailed listing:
executing program 0:
writev(0xffffffffffffffff, &(0x7f0000000100)=[{&(0x7f0000000140)="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", 0x20000}, {0x0, 0x20000}], 0x2)

program did not crash
testing program (duration=2m7.015096164s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, 0x0, 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{&(0x7f0000000140)="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", 0x20000}, {0x0, 0x20000}], 0x2)

program did not crash
testing program (duration=2m7.015096164s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, 0x0, 0x0)

program did not crash
testing program (duration=2m7.015096164s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{0x0}, {0x0}], 0x2)

program did not crash
testing program (duration=2m7.015096164s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{&(0x7f0000000140)}, {0x0}], 0x2)

program did not crash
extracting C reproducer
testing compiled C program (duration=2m7.015096164s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
simplifying C reproducer
testing compiled C program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
testing compiled C program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
testing compiled C program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
testing compiled C program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
testing compiled C program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
testing compiled C program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
testing compiled C program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
program crashed: possible deadlock in blkdev_buffered_write
testing program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{&(0x7f0000000140)="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", 0x20000}, {0x0, 0x20000}], 0x2)

program crashed: possible deadlock in blkdev_buffered_write
validation run: crashed=true
testing program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{&(0x7f0000000140)="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", 0x20000}, {0x0, 0x20000}], 0x2)

program crashed: possible deadlock in blkdev_buffered_write
validation run: crashed=true
testing program (duration=2m7.015096164s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$nullb-writev
detailed listing:
executing program 0:
r0 = openat$nullb(0xffffffffffffff9c, &(0x7f00000000c0), 0x105101, 0x0)
writev(r0, &(0x7f0000000100)=[{&(0x7f0000000140)="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", 0x20000}, {0x0, 0x20000}], 0x2)

program crashed: possible deadlock in blkdev_buffered_write
validation run: crashed=true
reproducing took 32m31.927476644s
repro crashed as (corrupted=false):
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.0.17/5949 is trying to acquire lock:
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_buffered_write+0xb1/0x110 block/fops.c:734

but task is already holding lock:
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_write_iter+0x6c8/0x810 block/fops.c:811

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&sb->s_type->i_mutex_key#9);
  lock(&sb->s_type->i_mutex_key#9);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

locks held by syz.0.17/5949: 1, last CPU#1:
 #0: ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
 #0: ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_write_iter+0x6c8/0x810 block/fops.c:811

stack backtrace:
CPU: 1 UID: 0 PID: 5949 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_deadlock_bug+0x27a/0x290 kernel/locking/lockdep.c:3085
 check_deadlock kernel/locking/lockdep.c:3137 [inline]
 validate_chain kernel/locking/lockdep.c:3939 [inline]
 __lock_acquire+0x25db/0x2de0 kernel/locking/lockdep.c:5288
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 down_read+0x92/0x200 kernel/locking/rwsem.c:1574
 inode_lock_shared include/linux/fs.h:1039 [inline]
 blkdev_buffered_write+0xb1/0x110 block/fops.c:734
 blkdev_write_iter+0x6d8/0x810 block/fops.c:812
 do_iter_readv_writev+0x624/0x8d0 fs/read_write.c:-1
 vfs_writev+0x34c/0x990 fs/read_write.c:1058
 do_writev+0x15a/0x2e0 fs/read_write.c:1104
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f20b1b3f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd0f941418 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f20b1dc5fa0 RCX: 00007f20b1b3f559
RDX: 0000000000000002 RSI: 0000200000000100 RDI: 0000000000000003
RBP: 00007f20b1bd6b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f20b1dc5fac R14: 00007f20b1dc5fa0 R15: 00007f20b1dc5fa0
 </TASK>

final repro crashed as (corrupted=false):
============================================
WARNING: possible recursive locking detected
syzkaller #0 Not tainted
--------------------------------------------
syz.0.17/5949 is trying to acquire lock:
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_buffered_write+0xb1/0x110 block/fops.c:734

but task is already holding lock:
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_write_iter+0x6c8/0x810 block/fops.c:811

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&sb->s_type->i_mutex_key#9);
  lock(&sb->s_type->i_mutex_key#9);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

locks held by syz.0.17/5949: 1, last CPU#1:
 #0: ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:1039 [inline]
 #0: ffff8880284b6608 (&sb->s_type->i_mutex_key#9){++++}-{4:4}, at: blkdev_write_iter+0x6c8/0x810 block/fops.c:811

stack backtrace:
CPU: 1 UID: 0 PID: 5949 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_deadlock_bug+0x27a/0x290 kernel/locking/lockdep.c:3085
 check_deadlock kernel/locking/lockdep.c:3137 [inline]
 validate_chain kernel/locking/lockdep.c:3939 [inline]
 __lock_acquire+0x25db/0x2de0 kernel/locking/lockdep.c:5288
 lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5942
 down_read+0x92/0x200 kernel/locking/rwsem.c:1574
 inode_lock_shared include/linux/fs.h:1039 [inline]
 blkdev_buffered_write+0xb1/0x110 block/fops.c:734
 blkdev_write_iter+0x6d8/0x810 block/fops.c:812
 do_iter_readv_writev+0x624/0x8d0 fs/read_write.c:-1
 vfs_writev+0x34c/0x990 fs/read_write.c:1058
 do_writev+0x15a/0x2e0 fs/read_write.c:1104
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f20b1b3f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd0f941418 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007f20b1dc5fa0 RCX: 00007f20b1b3f559
RDX: 0000000000000002 RSI: 0000200000000100 RDI: 0000000000000003
RBP: 00007f20b1bd6b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f20b1dc5fac R14: 00007f20b1dc5fa0 R15: 00007f20b1dc5fa0
 </TASK>