INFO: task syz.0.17:6034 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17        state:D stack:25032 pid:6034  tgid:6034  ppid:5974   task_flags:0x440140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5354 [inline]
 __schedule+0x165c/0x5520 kernel/sched/core.c:6966
 __schedule_loop kernel/sched/core.c:7049 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7064
 xlog_grant_head_wait+0x442/0xa10 fs/xfs/xfs_log.c:217
 xlog_grant_head_check+0x286/0x420 fs/xfs/xfs_log.c:-1
 xfs_log_reserve+0x2bc/0x780 fs/xfs/xfs_log.c:387
 xfs_trans_reserve fs/xfs/xfs_trans.c:174 [inline]
 xfs_trans_alloc+0x29c/0x980 fs/xfs/xfs_trans.c:256
 xfs_trans_alloc_inode+0x13c/0x4a0 fs/xfs/xfs_trans.c:1080
 xfs_attr_set+0x82e/0x1410 fs/xfs/libxfs/xfs_attr.c:1184
 xfs_xattr_set+0x188/0x2a0 fs/xfs/xfs_xattr.c:186
 __vfs_setxattr+0x43c/0x480 fs/xattr.c:218
 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:252
 vfs_setxattr+0x163/0x360 fs/xattr.c:339
 do_setxattr fs/xattr.c:654 [inline]
 filename_setxattr+0x296/0x630 fs/xattr.c:682
 path_setxattrat+0x3eb/0x440 fs/xattr.c:726
 __do_sys_lsetxattr fs/xattr.c:767 [inline]
 __se_sys_lsetxattr fs/xattr.c:763 [inline]
 __x64_sys_lsetxattr+0xbf/0xe0 fs/xattr.c:763
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4a4cb9c799
RSP: 002b:00007ffe37856758 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f4a4ce15fa0 RCX: 00007f4a4cb9c799
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000200000000100
RBP: 00007f4a4cc32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fe37 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4a4ce15fac R14: 00007f4a4ce15fa0 R15: 00007f4a4ce15fa0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffffffff8e75d0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
 #0: ffffffff8e75d0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline]
 #0: ffffffff8e75d0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5600:
 #0: ffff8880378690a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000322b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13a0 drivers/tty/n_tty.c:2211
3 locks held by syz.0.17/6034:
 #0: ffff888036a12410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff888059e03f20 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff888059e03f20 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff888036a12600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.1.18/6064:
 #0: ffff88807faf8410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff888059fd99a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff888059fd99a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff88807faf8600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.2.19/6099:
 #0: ffff88802a3f0410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff888059fd9220 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff888059fd9220 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff88802a3f0600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.3.20/6128:
 #0: ffff888036e38410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff888059e073a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff888059e073a0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff888036e38600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.4.21/6163:
 #0: ffff88807d45e410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff888059e01220 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff888059e01220 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff88807d45e600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.5.22/6200:
 #0: ffff888057eda410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff88805c048320 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff88805c048320 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff888057eda600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.6.23/6239:
 #0: ffff888031afc410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff88805c04dd20 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff88805c04dd20 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff888031afc600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.7.24/6274:
 #0: ffff88804fb1c410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff88805c04bf20 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff88805c04bf20 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff88804fb1c600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254
3 locks held by syz.8.25/6310:
 #0: ffff88804f762410 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
 #1: ffff88805c04a120 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
 #1: ffff88805c04a120 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: vfs_setxattr+0x13e/0x360 fs/xattr.c:338
 #2: ffff88804f762600 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc+0xd7/0x980 fs/xfs/xfs_trans.c:254

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd3/0x1030 kernel/hung_task.c:561
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
Code: cc 6d 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 63 01 17 00 fb f4 <e9> bc ef 02 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8e407dc0 EFLAGS: 00000246
RAX: 00000000001951eb RBX: ffffffff819b190a RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8df45c2e RDI: ffffffff8c288380
RBP: ffffffff8e407eb0 R08: ffff8880b86339db R09: 1ffff110170c673b
R10: dffffc0000000000 R11: ffffed10170c673c R12: 0000000000000000
R13: 1ffffffff1c925d8 R14: 0000000000000000 R15: 1ffffffff1c925d8
FS:  0000000000000000(0000) GS:ffff88812543f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005587e2799d08 CR3: 0000000035722000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/kernel/process.c:766 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:767
 default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x36a/0x5f0 kernel/sched/idle.c:352
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:451
 rest_init+0x2de/0x300 init/main.c:761
 start_kernel+0x38a/0x3e0 init/main.c:1219
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x147
 </TASK>