------------[ cut here ]------------ current->flags & PF_MEMALLOC WARNING: mm/page_alloc.c:4816 at __alloc_pages_slowpath mm/page_alloc.c:4816 [inline], CPU#1: syz-executor/13525 WARNING: mm/page_alloc.c:4816 at __alloc_frozen_pages_noprof+0x1eac/0x3300 mm/page_alloc.c:5449, CPU#1: syz-executor/13525 Modules linked in: CPU: 1 UID: 0 PID: 13525 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__alloc_pages_slowpath mm/page_alloc.c:4816 [inline] RIP: 0010:__alloc_frozen_pages_noprof+0x1eac/0x3300 mm/page_alloc.c:5449 Code: 38 d0 7c 08 84 d2 0f 85 de 12 00 00 65 48 8b 05 62 56 1c 12 c7 84 24 94 00 00 00 00 80 00 00 f6 40 2d 08 0f 84 ba e7 ff ff 90 <0f> 0b 90 e9 b1 e7 ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 RSP: 0000:ffffc90007555d18 EFLAGS: 00010202 RAX: ffff8880253a2580 RBX: 0000000000000000 RCX: 1ffff1100fffad29 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88803fffd938 RBP: ffff8880253a25ac R08: 0000000000008000 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000148c48 R13: ffff88803fffb900 R14: 0000000000000000 R15: 1ffff92000eaabbd FS: 0000000000000000(0000) GS:ffff888096a60000(0063) knlGS:0000000056bbf480 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7259060 CR3: 000000007333f000 CR4: 0000000000352ef0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: alloc_pages_mpol+0x201/0x550 mm/mempolicy.c:2486 alloc_pages_noprof mm/mempolicy.c:2577 [inline] folio_alloc_noprof+0x22/0x250 mm/mempolicy.c:2587 filemap_alloc_folio_noprof.part.0+0x3db/0x440 mm/filemap.c:1019 filemap_alloc_folio_noprof mm/filemap.c:2033 [inline] __filemap_get_folio_mpol+0x653/0x1320 mm/filemap.c:2018 __filemap_get_folio include/linux/pagemap.h:761 [inline] grow_dev_folio fs/buffer.c:858 [inline] grow_buffers fs/buffer.c:924 [inline] __getblk_slow fs/buffer.c:942 [inline] bdev_getblk+0x246/0x6a0 fs/buffer.c:1346 __getblk include/linux/buffer_head.h:378 [inline] sb_getblk include/linux/buffer_head.h:384 [inline] __ext4_get_inode_loc+0x571/0x1510 fs/ext4/inode.c:4921 ext4_get_inode_loc+0xbd/0x160 fs/ext4/inode.c:5049 ext4_reserve_inode_write+0x145/0x330 fs/ext4/inode.c:6511 __ext4_mark_inode_dirty+0x18f/0x910 fs/ext4/inode.c:6699 ext4_dirty_inode+0xd9/0x130 fs/ext4/inode.c:6736 __mark_inode_dirty+0x1f3/0x16e0 fs/fs-writeback.c:2729 mark_inode_dirty_sync include/linux/fs.h:2211 [inline] sync_lazytime fs/fs-writeback.c:1761 [inline] sync_lazytime+0x39b/0x5d0 fs/fs-writeback.c:1753 iput.part.0+0x207/0x1050 fs/inode.c:2046 iput+0x35/0x40 fs/inode.c:2030 dentry_unlink_inode+0x284/0x470 fs/dcache.c:479 dentry_kill+0x25d/0xc20 fs/dcache.c:826 shrink_kill fs/dcache.c:1275 [inline] shrink_dentry_list+0x1e8/0x310 fs/dcache.c:1292 prune_dcache_sb+0xea/0x150 fs/dcache.c:1374 super_cache_scan+0x361/0x5c0 fs/super.c:238 do_shrink_slab+0x416/0x1200 mm/shrinker.c:443 shrink_slab+0x171/0x12e0 mm/shrinker.c:674 shrink_one+0x398/0x850 mm/vmscan.c:5119 shrink_many mm/vmscan.c:5180 [inline] lru_gen_shrink_node mm/vmscan.c:5258 [inline] shrink_node+0x2b20/0x4320 mm/vmscan.c:6247 shrink_zones mm/vmscan.c:6503 [inline] do_try_to_free_pages+0x33e/0x16d0 mm/vmscan.c:6565 try_to_free_pages+0x2a0/0x740 mm/vmscan.c:6804 __perform_reclaim mm/page_alloc.c:4451 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4478 [inline] __alloc_pages_slowpath mm/page_alloc.c:4939 [inline] __alloc_frozen_pages_noprof+0xf8a/0x3300 mm/page_alloc.c:5449 alloc_pages_mpol+0x201/0x550 mm/mempolicy.c:2486 alloc_pages_noprof+0x1a/0x160 mm/mempolicy.c:2577 pagetable_alloc_noprof include/linux/mm.h:3794 [inline] __pte_alloc_one_noprof include/asm-generic/pgalloc.h:76 [inline] pte_alloc_one+0x1c/0x3d0 arch/x86/mm/pgtable.c:18 __pte_alloc+0x6d/0x380 mm/memory.c:453 get_locked_pte+0xa1/0xc0 mm/memory.c:2431 insert_page+0xcc/0x220 mm/memory.c:2534 vm_insert_page+0x2c0/0x400 mm/memory.c:2722 kcov_mmap+0xca/0x130 kernel/kcov.c:527 vfs_mmap include/linux/fs.h:2064 [inline] mmap_file mm/internal.h:238 [inline] __mmap_new_file_vma mm/vma.c:2595 [inline] __mmap_new_vma mm/vma.c:2668 [inline] __mmap_region+0x157e/0x32c0 mm/vma.c:2879 mmap_region+0x5a8/0x6d0 mm/vma.c:2964 do_mmap+0x12c7/0x1c30 mm/mmap.c:573 vm_mmap_pgoff+0x28d/0x470 mm/util.c:581 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:619 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:79 [inline] __do_fast_syscall_32+0x13a/0x8b0 arch/x86/entry/syscall_32.c:291 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:316 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf700efec Code: Unable to access opcode bytes at 0xf700efc2. RSP: 002b:00000000ff9c2520 EFLAGS: 00000246 ORIG_RAX: 00000000000000c0 RAX: ffffffffffffffda RBX: 00000000f6c06000 RCX: 0000000000400000 RDX: 0000000000000003 RSI: 0000000000000011 RDI: 00000000000000d8 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000