folio_batch_release include/linux/folio_batch.h:101 [inline] truncate_inode_pages_range+0x3dd/0xe30 mm/truncate.c:408 kill_bdev block/bdev.c:91 [inline] set_blocksize+0x2ce/0x440 block/bdev.c:207 blkdev_bszset+0x1b2/0x230 block/ioctl.c:647 blkdev_ioctl+0x2c7/0x740 block/ioctl.c:786 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f ------------[ cut here ]------------ kernel BUG at mm/filemap.c:860! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 22223 Comm: syz.6.3355 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:__filemap_add_folio+0x11bc/0x1330 mm/filemap.c:859 Code: f4 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 0c a5 26 ff 90 0f 0b e8 f4 f3 c4 ff 4c 89 e7 48 c7 c6 20 aa d7 8b e8 f5 a4 26 ff 90 <0f> 0b e8 dd f3 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 de a4 26 ff RSP: 0018:ffffc9000729f140 EFLAGS: 00010246 RAX: 332672d2741c6000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8e106c7e RDI: 00000000ffffffff RBP: ffffc9000729f2c0 R08: ffffffff9033bef7 R09: 1ffffffff20677de R10: dffffc0000000000 R11: fffffbfff20677df R12: ffffea00006dcfc0 R13: dffffc0000000000 R14: ffffea00006dcfc8 R15: 0000000000000004 FS: 00007fa475ce16c0(0000) GS:ffff888125304000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa475ce1d58 CR3: 0000000057b72000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000079 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: filemap_add_folio+0x264/0x530 mm/filemap.c:967 ra_alloc_folio mm/readahead.c:456 [inline] page_cache_ra_order+0x6a9/0xe80 mm/readahead.c:515 do_sync_mmap_readahead+0x6ad/0x8e0 mm/filemap.c:3406 filemap_fault+0x703/0x1300 mm/filemap.c:3555 __do_fault+0x3e7/0x590 mm/memory.c:5501 do_read_fault mm/memory.c:5936 [inline] do_fault mm/memory.c:6070 [inline] do_pte_missing+0x2093/0x33f0 mm/memory.c:4550 handle_pte_fault mm/memory.c:6454 [inline] __handle_mm_fault mm/memory.c:6592 [inline] handle_mm_fault+0x1bd7/0x3170 mm/memory.c:6761 do_user_addr_fault+0x75b/0x1340 arch/x86/mm/fault.c:1385 handle_page_fault arch/x86/mm/fault.c:1474 [inline] exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618 RIP: 0010:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74 Code: 4d 04 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 a4 e9 0f 4d 04 00 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 RSP: 0018:ffffc9000729fb78 EFLAGS: 00050246 RAX: 00007ffffffff001 RBX: 0000000000000040 RCX: 0000000000000040 RDX: 0000000000000001 RSI: 0000200000000000 RDI: ffffc9000729fbe0 RBP: ffffc9000729fc90 R08: ffffc9000729fc1f R09: 1ffff92000e53f83 R10: dffffc0000000000 R11: fffff52000e53f84 R12: f8f8f8f8f1f1f1f1 R13: ffffc9000729fbe0 R14: ffffc9000729fbe0 R15: 0000200000000000 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline] _inline_copy_from_user include/linux/uaccess.h:185 [inline] _copy_from_user+0x7a/0xb0 lib/usercopy.c:18 copy_from_user include/linux/uaccess.h:223 [inline] dev_write+0xc6/0xe90 fs/dlm/plock.c:530 vfs_write+0x29a/0xb90 fs/read_write.c:686 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa474d9c819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa475ce1028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fa475016270 RCX: 00007fa474d9c819 RDX: 0000000000000040 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007fa474e32c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa475016308 R14: 00007fa475016270 R15: 00007ffe2bc3b458 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__filemap_add_folio+0x11bc/0x1330 mm/filemap.c:859 Code: f4 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 0c a5 26 ff 90 0f 0b e8 f4 f3 c4 ff 4c 89 e7 48 c7 c6 20 aa d7 8b e8 f5 a4 26 ff 90 <0f> 0b e8 dd f3 c4 ff 4c 89 e7 48 c7 c6 c0 b5 d7 8b e8 de a4 26 ff RSP: 0018:ffffc9000729f140 EFLAGS: 00010246 RAX: 332672d2741c6000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000007 RSI: ffffffff8e106c7e RDI: 00000000ffffffff RBP: ffffc9000729f2c0 R08: ffffffff9033bef7 R09: 1ffffffff20677de R10: dffffc0000000000 R11: fffffbfff20677df R12: ffffea00006dcfc0 R13: dffffc0000000000 R14: ffffea00006dcfc8 R15: 0000000000000004 FS: 00007fa475ce16c0(0000) GS:ffff888125304000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa475ce1d58 CR3: 0000000057b72000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000079 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4d 04 00 rex.WRB add $0x0,%al 3: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) a: 00 00 00 d: 0f 1f 00 nopl (%rax) 10: 48 8b 06 mov (%rsi),%rax 13: 48 89 07 mov %rax,(%rdi) 16: 48 83 c6 08 add $0x8,%rsi 1a: 48 83 c7 08 add $0x8,%rdi 1e: 83 e9 08 sub $0x8,%ecx 21: 74 db je 0xfffffffe 23: 83 f9 08 cmp $0x8,%ecx 26: 73 e8 jae 0x10 28: eb c5 jmp 0xffffffef * 2a: f3 a4 rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction 2c: e9 0f 4d 04 00 jmp 0x44d40 31: 48 8b 06 mov (%rsi),%rax 34: 48 89 07 mov %rax,(%rdi) 37: 48 8d 47 08 lea 0x8(%rdi),%rax 3b: 48 83 e0 f8 and $0xfffffffffffffff8,%rax 3f: 48 rex.W