page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x23 pfn:0x3ec29 memcg:ffff888030458d00 flags: 0x4fff00000000001(locked|node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000001 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000023 0000000000000000 00000001ffffffff ffff888030458d00 page dumped because: VM_BUG_ON_FOLIO(folio_order(folio) < mapping_min_folio_order(mapping)) page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x152c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 5318, tgid 5316 (syz.0.0), ts 75674553566, free_ts 75674175407 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline] alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2507 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2517 filemap_alloc_folio_noprof+0xdf/0x470 mm/filemap.c:1020 ractl_alloc_folio mm/readahead.c:189 [inline] ra_alloc_folio mm/readahead.c:446 [inline] page_cache_ra_order+0x55b/0xe70 mm/readahead.c:512 do_sync_mmap_readahead+0x25e/0x7a0 mm/filemap.c:-1 filemap_fault+0x6b9/0x12b0 mm/filemap.c:3489 __do_fault+0x138/0x390 mm/memory.c:5280 do_read_fault mm/memory.c:5698 [inline] do_fault mm/memory.c:5832 [inline] do_pte_missing mm/memory.c:4361 [inline] handle_pte_fault mm/memory.c:6177 [inline] __handle_mm_fault+0x35e3/0x5400 mm/memory.c:6318 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6487 do_user_addr_fault+0x764/0x1380 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 page last free pid 5319 tgid 5316 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] free_unref_folios+0xdb3/0x14f0 mm/page_alloc.c:2963 folios_put_refs+0x584/0x670 mm/swap.c:1002 folio_batch_release include/linux/pagevec.h:101 [inline] truncate_inode_pages_range+0x346/0xda0 mm/truncate.c:383 kill_bdev block/bdev.c:91 [inline] set_blocksize+0x32a/0x500 block/bdev.c:207 blkdev_bszset+0x1ac/0x220 block/ioctl.c:554 blkdev_ioctl+0x437/0x6d0 block/ioctl.c:688 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:871! Oops: invalid opcode: 0000 [#2] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Tainted: G D syzkaller #0 PREEMPT(full) Tainted: [D]=DIE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:870 Code: 8b c6 ff 4c 89 e7 48 c7 c6 00 75 74 8b e8 cb 63 2e ff 90 0f 0b e8 53 8b c6 ff 4c 89 e7 48 c7 c6 e0 6b 74 8b e8 b4 63 2e ff 90 <0f> 0b e8 3c 8b c6 ff 4c 89 e7 48 c7 c6 00 75 74 8b e8 9d 63 2e ff RSP: 0018:ffffc9000d3773a0 EFLAGS: 00010246 RAX: ac6ab2bd39f32300 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8d71080b RDI: 00000000ffffffff RBP: ffffc9000d377508 R08: ffffffff8f7d0277 R09: 1ffffffff1efa04e R10: dffffc0000000000 R11: fffffbfff1efa04f R12: ffffea0000fb0a40 R13: dffffc0000000000 R14: ffffea0000fb0a48 R15: 0000000000000002 FS: 00007f93ae2876c0(0000) GS:ffff88808d730000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f33eb6b1218 CR3: 0000000012399000 CR4: 0000000000352ef0 Call Trace: filemap_add_folio+0x26d/0x540 mm/filemap.c:978 ra_alloc_folio mm/readahead.c:453 [inline] page_cache_ra_order+0x6bc/0xe70 mm/readahead.c:512 do_sync_mmap_readahead+0x25e/0x7a0 mm/filemap.c:-1 filemap_fault+0x6b9/0x12b0 mm/filemap.c:3489 __do_fault+0x138/0x390 mm/memory.c:5280 do_read_fault mm/memory.c:5698 [inline] do_fault mm/memory.c:5832 [inline] do_pte_missing mm/memory.c:4361 [inline] handle_pte_fault mm/memory.c:6177 [inline] __handle_mm_fault+0x35e3/0x5400 mm/memory.c:6318 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6487 do_user_addr_fault+0x764/0x1380 arch/x86/mm/fault.c:1387 handle_page_fault arch/x86/mm/fault.c:1476 [inline] exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0010:__get_user_4+0x14/0x20 arch/x86/lib/getuser.S:88 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 ba 00 f0 ff ff ff 7f 00 00 48 39 d0 48 0f 47 c2 0f 01 cb <8b> 10 31 c0 0f 01 ca e9 d0 2a 04 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000d377d18 EFLAGS: 00050283 RAX: 0000200000000980 RBX: 1ffff92001a6efa8 RCX: ac6ab2bd39f32300 RDX: 00007ffffffff000 RSI: ffffffff8d8f755a RDI: ffffffff8bbf18e0 RBP: ffffc9000d377dd0 R08: 0000000000000000 R09: ffffffff820ef730 R10: dffffc0000000000 R11: ffffed10036505a0 R12: ffff888031ee9f80 R13: dffffc0000000000 R14: ffff88801e7661c0 R15: 0000200000000980 blkdev_bszset+0xfb/0x220 block/ioctl.c:545 blkdev_ioctl+0x437/0x6d0 block/ioctl.c:688 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f93ad38f6c9 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:00007f93ae287038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f93ad5e6090 RCX: 00007f93ad38f6c9 RDX: 0000200000000980 RSI: 0000000040081271 RDI: 0000000000000005 RBP: 00007f93ad411f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f93ad5e6128 R14: 00007f93ad5e6090 R15: 00007ffd8efbec28 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:870 Code: 8b c6 ff 4c 89 e7 48 c7 c6 00 75 74 8b e8 cb 63 2e ff 90 0f 0b e8 53 8b c6 ff 4c 89 e7 48 c7 c6 e0 6b 74 8b e8 b4 63 2e ff 90 <0f> 0b e8 3c 8b c6 ff 4c 89 e7 48 c7 c6 00 75 74 8b e8 9d 63 2e ff RSP: 0018:ffffc9000d3173a0 EFLAGS: 00010246 RAX: 600629a91e2b0a00 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8d71080b RDI: 00000000ffffffff RBP: ffffc9000d317508 R08: ffffffff8f7d0277 R09: 1ffffffff1efa04e R10: dffffc0000000000 R11: fffffbfff1efa04f R12: ffffea0000fabcc0 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 48 ba 00 f0 ff ff ff movabs $0x7ffffffff000,%rdx 1d: 7f 00 00 20: 48 39 d0 cmp %rdx,%rax 23: 48 0f 47 c2 cmova %rdx,%rax 27: 0f 01 cb stac * 2a: 8b 10 mov (%rax),%edx <-- trapping instruction 2c: 31 c0 xor %eax,%eax 2e: 0f 01 ca clac 31: e9 d0 2a 04 00 jmp 0x42b06 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop