syzbot

BUG: sleeping function called from invalid context at fs/inode.c:1928
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5999, name: syz.0.17
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz.0.17/5999:
 #0: ffff88802c7780e0 (&type->s_umount_key#31){++++}-{4:4}, at: __super_lock fs/super.c:57 [inline]
 #0: ffff88802c7780e0 (&type->s_umount_key#31){++++}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
 #0: ffff88802c7780e0 (&type->s_umount_key#31){++++}-{4:4}, at: deactivate_super fs/super.c:505 [inline]
 #0: ffff88802c7780e0 (&type->s_umount_key#31){++++}-{4:4}, at: deactivate_super+0xd6/0x100 fs/super.c:502
 #1: ffff88802c778998 (&s->s_inode_list_lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #1: ffff88802c778998 (&s->s_inode_list_lock){+.+.}-{3:3}, at: hook_sb_delete security/landlock/fs.c:1279 [inline]
 #1: ffff88802c778998 (&s->s_inode_list_lock){+.+.}-{3:3}, at: hook_sb_delete+0x11c/0xbd0 security/landlock/fs.c:1272
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5999 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120
 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:8927
 iput+0x1e/0x40 fs/inode.c:1928
 hook_sb_delete security/landlock/fs.c:1342 [inline]
 hook_sb_delete+0x8bb/0xbd0 security/landlock/fs.c:1272
 security_sb_delete+0x6d/0x110 security/security.c:1467
 generic_shutdown_super+0xc2/0x390 fs/super.c:634
 kill_anon_super fs/super.c:1281 [inline]
 kill_litter_super+0x70/0xa0 fs/super.c:1291
 deactivate_locked_super+0xc1/0x1a0 fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0xde/0x100 fs/super.c:502
 cleanup_mnt+0x225/0x450 fs/namespace.c:1327
 task_work_run+0x150/0x240 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xec/0x130 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x426/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f061058f6c9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd3f07e168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f06107e5fa0 RCX: 00007f061058f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000002c0
RBP: 00007f0610611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f06107e5fa0 R14: 00007f06107e5fa0 R15: 0000000000000002
 </TASK>