------------[ cut here ]------------ current->flags & PF_MEMALLOC WARNING: mm/page_alloc.c:4816 at __alloc_pages_slowpath mm/page_alloc.c:4816 [inline], CPU#0: syz.1.3423/18448 WARNING: mm/page_alloc.c:4816 at __alloc_frozen_pages_noprof+0x1eac/0x3300 mm/page_alloc.c:5449, CPU#0: syz.1.3423/18448 Modules linked in: CPU: 0 UID: 0 PID: 18448 Comm: syz.1.3423 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 e2 a7 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:ffffc90007505f18 EFLAGS: 00010202 RAX: ffff88805ef68000 RBX: 0000000000000000 RCX: 1ffff1100fffad29 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88803fffd938 RBP: ffff88805ef6802c R08: 0000000000008000 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000148c48 R13: ffff88803fffb900 R14: 0000000000000000 R15: 1ffff92000ea0bfd FS: 0000000000000000(0000) GS:ffff888096955000(0063) knlGS:00000000f5476b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f748ba54 CR3: 0000000069409000 CR4: 0000000000352ef0 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+0x653/0x1280 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:2744 mark_inode_dirty_sync include/linux/fs.h:2211 [inline] sync_lazytime fs/fs-writeback.c:1776 [inline] sync_lazytime+0x39b/0x5d0 fs/fs-writeback.c:1768 iput.part.0+0x207/0x1050 fs/inode.c:2045 iput+0x35/0x40 fs/inode.c:2029 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+0x32b/0x550 fs/super.c:225 do_shrink_slab+0x416/0x1200 mm/shrinker.c:445 shrink_slab+0x171/0x12e0 mm/shrinker.c:676 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 vm_area_alloc_pages mm/vmalloc.c:3764 [inline] __vmalloc_area_node mm/vmalloc.c:3914 [inline] __vmalloc_node_range_noprof+0xc1b/0x1420 mm/vmalloc.c:4104 __kvmalloc_node_noprof+0x3da/0x9b0 mm/slub.c:7042 bpf_check+0x1c48/0xa550 kernel/bpf/verifier.c:21303 bpf_prog_load+0x1ac3/0x2a80 kernel/bpf/syscall.c:3133 __sys_bpf+0x1f46/0x4a30 kernel/bpf/syscall.c:6370 __do_sys_bpf kernel/bpf/syscall.c:6489 [inline] __se_sys_bpf kernel/bpf/syscall.c:6486 [inline] __ia32_sys_bpf+0xcc/0x170 kernel/bpf/syscall.c:6486 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: 0023:0xf7fb6fec Code: Unable to access opcode bytes at 0xf7fb6fc2. RSP: 002b:00000000f547650c EFLAGS: 00000292 ORIG_RAX: 0000000000000165 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080000840 RDX: 0000000000000094 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000