FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.12.0-syzkaller-12113-gbcc8eda6d349 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:53 [inline]
 should_fail_ex+0x3b0/0x4e0 lib/fault-inject.c:154
 should_failslab+0xac/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4057 [inline]
 slab_alloc_node mm/slub.c:4133 [inline]
 __kmalloc_cache_noprof+0x70/0x390 mm/slub.c:4309
 kmalloc_noprof include/linux/slab.h:901 [inline]
 netfs_buffer_make_space+0x12b/0x4a0 fs/netfs/misc.c:30
 netfs_buffer_append_folio+0xbb/0x560 fs/netfs/misc.c:69
 netfs_write_folio+0xe0a/0x2070 fs/netfs/write_issue.c:432
 netfs_writepages+0x8aa/0xb80 fs/netfs/write_issue.c:581
 do_writepages+0x35f/0x880 mm/page-writeback.c:2702
 filemap_fdatawrite_wbc mm/filemap.c:397 [inline]
 __filemap_fdatawrite_range mm/filemap.c:430 [inline]
 file_write_and_wait_range+0x2a3/0x3c0 mm/filemap.c:787
 v9fs_file_fsync+0xf3/0x1d0 fs/9p/vfs_file.c:418
 generic_write_sync include/linux/fs.h:2904 [inline]
 netfs_file_write_iter+0x36d/0x3f0 fs/netfs/buffered_write.c:487
 do_iter_readv_writev+0x600/0x880
 vfs_writev+0x376/0xba0 fs/read_write.c:1050
 do_writev+0x1b6/0x360 fs/read_write.c:1096
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6bf980849
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:00007ff6c0741058 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007ff6bfb45fa0 RCX: 00007ff6bf980849
RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000007
RBP: 00007ff6c07410a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000000000 R14: 00007ff6bfb45fa0 R15: 00007ffd190385e8
 </TASK>
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in ./include/linux/folio_queue.h:277:9
index 31 is out of range for type 'struct folio *const[31]'
CPU: 0 UID: 0 PID: 5314 Comm: syz.0.0 Not tainted 6.12.0-syzkaller-12113-gbcc8eda6d349 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429
 folioq_folio include/linux/folio_queue.h:277 [inline]
 iterate_folioq include/linux/iov_iter.h:162 [inline]
 iterate_and_advance2 include/linux/iov_iter.h:308 [inline]
 iterate_and_advance include/linux/iov_iter.h:328 [inline]
 __copy_from_iter lib/iov_iter.c:249 [inline]
 _copy_from_iter+0x11e4/0x1e70 lib/iov_iter.c:260
 copy_from_iter include/linux/uio.h:219 [inline]
 copy_from_iter_full include/linux/uio.h:236 [inline]
 pdu_write_u net/9p/protocol.c:234 [inline]
 p9pdu_vwritef+0x1c75/0x29e0 net/9p/protocol.c:614
 p9_client_prepare_req+0xa8d/0xf30 net/9p/client.c:651
 p9_client_rpc+0x19d/0xac0 net/9p/client.c:691
 p9_client_write+0x328/0x7a0 net/9p/client.c:1645
 v9fs_issue_write+0xfd/0x1c0 fs/9p/vfs_addr.c:59
 netfs_do_issue_write fs/netfs/write_issue.c:233 [inline]
 netfs_issue_write fs/netfs/write_issue.c:260 [inline]
 netfs_advance_write+0x972/0xbd0 fs/netfs/write_issue.c:301
 netfs_write_folio+0x12fb/0x2070 fs/netfs/write_issue.c:485
 netfs_writepages+0x8aa/0xb80 fs/netfs/write_issue.c:581
 do_writepages+0x35f/0x880 mm/page-writeback.c:2702
 filemap_fdatawrite_wbc mm/filemap.c:397 [inline]
 __filemap_fdatawrite_range mm/filemap.c:430 [inline]
 file_write_and_wait_range+0x2a3/0x3c0 mm/filemap.c:787
 v9fs_file_fsync+0xf3/0x1d0 fs/9p/vfs_file.c:418
 generic_write_sync include/linux/fs.h:2904 [inline]
 netfs_file_write_iter+0x36d/0x3f0 fs/netfs/buffered_write.c:487
 do_iter_readv_writev+0x600/0x880
 vfs_writev+0x376/0xba0 fs/read_write.c:1050
 do_writev+0x1b6/0x360 fs/read_write.c:1096
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6bf980849
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:00007ff6c0741058 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007ff6bfb45fa0 RCX: 00007ff6bf980849
RDX: 0000000000000002 RSI: 0000000020000000 RDI: 0000000000000007
RBP: 00007ff6c07410a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000000000 R14: 00007ff6bfb45fa0 R15: 00007ffd190385e8
 </TASK>
---[ end trace ]---