BUG: sleeping function called from invalid context at include/linux/pagemap.h:674 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 16227, name: syz-executor.3 1 lock held by syz-executor.3/16227: #0: ffff88801e28a018 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:359 [inline] #0: ffff88801e28a018 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: map_pte mm/page_vma_mapped.c:52 [inline] #0: ffff88801e28a018 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: page_vma_mapped_walk+0xd87/0x24f0 mm/page_vma_mapped.c:261 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 16227 Comm: syz-executor.3 Not tainted 5.13.0-next-20210709-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 ___might_sleep.cold+0x1f1/0x237 kernel/sched/core.c:9171 lock_page include/linux/pagemap.h:674 [inline] __munlock_pagevec+0xa22/0x2340 mm/mlock.c:314 munlock_vma_pages_range+0x9d7/0xf00 mm/mlock.c:475 munlock_vma_pages_all mm/internal.h:354 [inline] unlock_range mm/mmap.c:2811 [inline] exit_mmap+0x47a/0x620 mm/mmap.c:3188 __mmput+0x122/0x470 kernel/fork.c:1152 mmput+0x58/0x60 kernel/fork.c:1173 exit_mm kernel/exit.c:501 [inline] do_exit+0xae2/0x2a60 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 __do_sys_exit_group kernel/exit.c:933 [inline] __se_sys_exit_group kernel/exit.c:931 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: Unable to access opcode bytes at RIP 0x4665af. RSP: 002b:00007ffdfa966478 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00000000004665d9 RDX: 00000000004193eb RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2cb20838 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffdfa966570 ============================= [ BUG: Invalid wait context ] 5.13.0-next-20210709-syzkaller #0 Tainted: G W ----------------------------- syz-executor.3/16227 is trying to lock: ffff88803794e000 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: i_mmap_lock_read include/linux/fs.h:514 [inline] ffff88803794e000 (&mapping->i_mmap_rwsem){++++}-{3:3}, at: rmap_walk_file+0x52f/0x710 mm/rmap.c:2337 other info that might help us debug this: context-{4:4} 1 lock held by syz-executor.3/16227: #0: ffff88801e28a018 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:359 [inline] #0: ffff88801e28a018 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: map_pte mm/page_vma_mapped.c:52 [inline] #0: ffff88801e28a018 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: page_vma_mapped_walk+0xd87/0x24f0 mm/page_vma_mapped.c:261 stack backtrace: CPU: 1 PID: 16227 Comm: syz-executor.3 Tainted: G W 5.13.0-next-20210709-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 print_lock_invalid_wait_context kernel/locking/lockdep.c:4666 [inline] check_wait_context kernel/locking/lockdep.c:4727 [inline] __lock_acquire.cold+0x213/0x3ab kernel/locking/lockdep.c:4965 lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 down_read+0x9a/0x440 kernel/locking/rwsem.c:1353 i_mmap_lock_read include/linux/fs.h:514 [inline] rmap_walk_file+0x52f/0x710 mm/rmap.c:2337 rmap_walk+0x10d/0x190 mm/rmap.c:2366 page_mlock+0x448/0x650 mm/rmap.c:2029 __munlock_isolated_page+0x88/0x410 mm/mlock.c:122 __munlock_pagevec+0xd7f/0x2340 mm/mlock.c:322 munlock_vma_pages_range+0x9d7/0xf00 mm/mlock.c:475 munlock_vma_pages_all mm/internal.h:354 [inline] unlock_range mm/mmap.c:2811 [inline] exit_mmap+0x47a/0x620 mm/mmap.c:3188 __mmput+0x122/0x470 kernel/fork.c:1152 mmput+0x58/0x60 kernel/fork.c:1173 exit_mm kernel/exit.c:501 [inline] do_exit+0xae2/0x2a60 kernel/exit.c:812 do_group_exit+0x125/0x310 kernel/exit.c:922 __do_sys_exit_group kernel/exit.c:933 [inline] __se_sys_exit_group kernel/exit.c:931 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:931 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: Unable to access opcode bytes at RIP 0x4665af. RSP: 002b:00007ffdfa966478 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00000000004665d9 RDX: 00000000004193eb RSI: ffffffffffffffbc RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000001b2cb20838 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffdfa966570