loop4: detected capacity change from 0 to 16383 FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) ================================================================== BUG: KASAN: slab-out-of-bounds in _copy_to_iter+0x493/0x1420 Read of size 4087 at addr ffff888046512011 by task syz-executor.3/4372 CPU: 0 PID: 4372 Comm: syz-executor.3 Not tainted 5.19.0-rc6-next-20220715 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 print_report.cold+0x5e/0x5e5 kasan_report+0xb1/0x1c0 kasan_check_range+0x35/0x1c0 memcpy+0x20/0x60 _copy_to_iter+0x493/0x1420 seq_read_iter+0x71a/0x12b0 generic_file_splice_read+0x187/0x4d0 do_splice_to+0x1bc/0x240 splice_direct_to_actor+0x2ac/0x8c0 do_splice_direct+0x1b8/0x290 do_sendfile+0xb1d/0x1280 __x64_sys_sendfile64+0x149/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6e4a907b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6e47e5c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f6e4aa1b020 RCX: 00007f6e4a907b19 RDX: 0000000020000140 RSI: 0000000000000006 RDI: 0000000000000003 RBP: 00007f6e4a961f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc3b5cc4bf R14: 00007f6e47e5c300 R15: 0000000000022000 Allocated by task 4372: kasan_save_stack+0x1e/0x40 __kasan_kmalloc+0x81/0xa0 kvmalloc_node+0x41/0x1e0 seq_read_iter+0x81c/0x12b0 do_iter_readv_writev+0x2f0/0x3c0 do_iter_read+0x2fb/0x750 vfs_readv+0xe5/0x160 __x64_sys_preadv+0x22f/0x310 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888046512000 which belongs to the cache kmalloc-cg-4k of size 4096 The buggy address is located 17 bytes inside of 4096-byte region [ffff888046512000, ffff888046513000) The buggy address belongs to the physical page: page:00000000c5d09b23 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x46510 head:00000000c5d09b23 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff88800cf880c1 flags: 0x100000000010200(slab|head|node=0|zone=1) raw: 0100000000010200 dead000000000100 dead000000000122 ffff88800784c280 raw: 0000000000000000 0000000080040004 00000001ffffffff ffff88800cf880c1 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888046512f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888046512f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888046513000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888046513080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888046513100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) loop4: detected capacity change from 0 to 16383 capability: warning: `syz-executor.6' uses deprecated v2 capabilities in a way that may be insecure EXT4-fs warning (device sda): verify_group_input:171: Reserved blocks too high (5) ISOFS: Unable to identify CD-ROM format. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.4'. loop1: detected capacity change from 0 to 24 loop7: detected capacity change from 0 to 2048 ext4: Unknown parameter 'd[;?n9X; 'o-ZWٸEdwVm[ 2? َ' random: crng reseeded on system resumption Restarting kernel threads ... done. ISOFS: Unable to identify CD-ROM format. random: crng reseeded on system resumption Restarting kernel threads ... done. random: crng reseeded on system resumption Restarting kernel threads ... done.