syzbot

BUG: sleeping function called from invalid context at include/linux/sched/mm.h:209
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 3758, name: syz-executor389
1 lock held by syz-executor389/3758:
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pte_range mm/memory.c:1331 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pmd_range mm/memory.c:1494 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pud_range mm/memory.c:1523 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_p4d_range mm/memory.c:1544 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: unmap_page_range+0x9c3/0x2630 mm/memory.c:1565
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 3758 Comm: syz-executor389 Not tainted 5.15.105-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 ___might_sleep+0x547/0x6a0 kernel/sched/core.c:9625
 might_alloc include/linux/sched/mm.h:209 [inline]
 slab_pre_alloc_hook+0x44/0xc0 mm/slab.h:492
 slab_alloc_node mm/slub.c:3134 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0x3f/0x280 mm/slub.c:3233
 f2fs_kmem_cache_alloc_nofail fs/f2fs/f2fs.h:2627 [inline]
 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2637 [inline]
 f2fs_register_inmem_page+0x1d0/0x6f0 fs/f2fs/segment.c:192
 f2fs_set_data_page_dirty+0x7bb/0xa90 fs/f2fs/data.c:3781
 zap_pte_range mm/memory.c:1366 [inline]
 zap_pmd_range mm/memory.c:1494 [inline]
 zap_pud_range mm/memory.c:1523 [inline]
 zap_p4d_range mm/memory.c:1544 [inline]
 unmap_page_range+0xdcd/0x2630 mm/memory.c:1565
 unmap_vmas+0x1f8/0x390 mm/memory.c:1642
 exit_mmap+0x3b6/0x670 mm/mmap.c:3186
 __mmput+0x112/0x3b0 kernel/fork.c:1118
 exit_mm+0x688/0x7f0 kernel/exit.c:548
 do_exit+0x626/0x2480 kernel/exit.c:859
 do_group_exit+0x144/0x310 kernel/exit.c:994
 get_signal+0xc66/0x14e0 kernel/signal.c:2889
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f20c94ce799
Code: Unable to access opcode bytes at RIP 0x7f20c94ce76f.
RSP: 002b:00007f20c947a308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f20c955b7e8 RCX: 00007f20c94ce799
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f20c955b7e8
RBP: 00007f20c955b7e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f20c955b7ec
R13: 00007f20c9527f48 R14: 0032656c69662f2e R15: 0000000000022000
 </TASK>

=============================
[ BUG: Invalid wait context ]
5.15.105-syzkaller #0 Tainted: G        W        
-----------------------------
syz-executor389/3758 is trying to lock:
ffff88807092ac98 (&fi->inmem_lock){+.+.}-{3:3}, at: f2fs_register_inmem_page+0x31b/0x6f0 fs/f2fs/segment.c:201
other info that might help us debug this:
context-{4:4}
1 lock held by syz-executor389/3758:
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:363 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pte_range mm/memory.c:1331 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pmd_range mm/memory.c:1494 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_pud_range mm/memory.c:1523 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: zap_p4d_range mm/memory.c:1544 [inline]
 #0: ffff88807970f9d8 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: unmap_page_range+0x9c3/0x2630 mm/memory.c:1565
stack backtrace:
CPU: 1 PID: 3758 Comm: syz-executor389 Tainted: G        W         5.15.105-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4663 [inline]
 check_wait_context kernel/locking/lockdep.c:4724 [inline]
 __lock_acquire+0x14f5/0x1ff0 kernel/locking/lockdep.c:4961
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 f2fs_register_inmem_page+0x31b/0x6f0 fs/f2fs/segment.c:201
 f2fs_set_data_page_dirty+0x7bb/0xa90 fs/f2fs/data.c:3781
 zap_pte_range mm/memory.c:1366 [inline]
 zap_pmd_range mm/memory.c:1494 [inline]
 zap_pud_range mm/memory.c:1523 [inline]
 zap_p4d_range mm/memory.c:1544 [inline]
 unmap_page_range+0xdcd/0x2630 mm/memory.c:1565
 unmap_vmas+0x1f8/0x390 mm/memory.c:1642
 exit_mmap+0x3b6/0x670 mm/mmap.c:3186
 __mmput+0x112/0x3b0 kernel/fork.c:1118
 exit_mm+0x688/0x7f0 kernel/exit.c:548
 do_exit+0x626/0x2480 kernel/exit.c:859
 do_group_exit+0x144/0x310 kernel/exit.c:994
 get_signal+0xc66/0x14e0 kernel/signal.c:2889
 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f20c94ce799
Code: Unable to access opcode bytes at RIP 0x7f20c94ce76f.
RSP: 002b:00007f20c947a308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f20c955b7e8 RCX: 00007f20c94ce799
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f20c955b7e8
RBP: 00007f20c955b7e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f20c955b7ec
R13: 00007f20c9527f48 R14: 0032656c69662f2e R15: 0000000000022000
 </TASK>