BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 21351, name: syz.1.4372
preempt_count: 1, expected: 0
RCU nest depth: 1, expected: 1
4 locks held by syz.1.4372/21351:
 #0: ffff888061c800d0 (&type->s_umount_key#126){++++}-{4:4}, at: __super_lock fs/super.c:60 [inline]
 #0: ffff888061c800d0 (&type->s_umount_key#126){++++}-{4:4}, at: super_lock+0x2d6/0x3d0 fs/super.c:122
 #1: ffffffff8e620a78 (qd_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #1: ffffffff8e620a78 (qd_lock){+.+.}-{3:3}, at: qd_get+0x2a5/0x640 fs/gfs2/quota.c:296
 #2: ffffffff8dfc8100 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #2: ffffffff8dfc8100 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #2: ffffffff8dfc8100 (rcu_read_lock){....}-{1:3}, at: __rt_spin_lock kernel/locking/spinlock_rt.c:50 [inline]
 #2: ffffffff8dfc8100 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e0/0x400 kernel/locking/spinlock_rt.c:57
 #3: ffff8880693d0858 (&lockref->lock#6){+.+.}-{3:3}, at: spin_lock include/linux/spinlock_rt.h:45 [inline]
 #3: ffff8880693d0858 (&lockref->lock#6){+.+.}-{3:3}, at: lockref_get_not_dead+0x28/0xd0 lib/lockref.c:155
Preemption disabled at:
[<ffffffff841e0f2b>] bit_spin_lock include/linux/bit_spinlock.h:38 [inline]
[<ffffffff841e0f2b>] hlist_bl_lock include/linux/list_bl.h:149 [inline]
[<ffffffff841e0f2b>] spin_lock_bucket+0x3b/0x150 fs/gfs2/quota.c:98
CPU: 0 UID: 0 PID: 21351 Comm: syz.1.4372 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 __might_resched+0x329/0x480 kernel/sched/core.c:9162
 __rt_spin_lock kernel/locking/spinlock_rt.c:48 [inline]
 rt_spin_lock+0xc2/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 lockref_get_not_dead+0x28/0xd0 lib/lockref.c:155
 gfs2_qd_search_bucket+0x139/0x210 fs/gfs2/quota.c:269
 qd_get+0x2b9/0x640 fs/gfs2/quota.c:298
 gfs2_set_dqblk+0x2dc/0xbb0 fs/gfs2/quota.c:1724
 quota_setquota+0x4e0/0x590 fs/quota/quota.c:310
 __do_sys_quotactl fs/quota/quota.c:961 [inline]
 __se_sys_quotactl+0x2cd/0x9e0 fs/quota/quota.c:917
 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: 0033:0x7fc65c47c819
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:00007fc65a694028 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007fc65c6f6180 RCX: 00007fc65c47c819
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: ffffffff80000800
RBP: 00007fc65c512c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000180 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc65c6f6218 R14: 00007fc65c6f6180 R15: 00007ffd63651158
 </TASK>