loop0: detected capacity change from 0 to 512 EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. netlink: 4 bytes leftover after parsing attributes in process `syz.0.0'. mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium wlan1: authenticate with 08:02:11:00:00:00 (local address=08:02:11:00:00:01) wlan1: send auth to 08:02:11:00:00:00 (try 1/3) loop0: detected capacity change from 512 to 64 syz.0.0: attempt to access beyond end of device loop0: rw=524288, sector=70, nr_sectors = 18 limit=64 syz.0.0: attempt to access beyond end of device loop0: rw=0, sector=70, nr_sectors = 8 limit=64 syz.0.0: attempt to access beyond end of device loop0: rw=0, sector=86, nr_sectors = 2 limit=64 ------------[ cut here ]------------ kernel BUG at fs/ext4/mballoc.c:4687! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5315 Comm: syz.0.0 Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:ext4_mb_use_inode_pa+0x690/0x700 fs/ext4/mballoc.c:4687 Code: c0 6e af 8e 4c 89 e6 48 89 ea e8 9b dd 9b 02 e9 be fc ff ff e8 c1 81 40 ff 90 0f 0b e8 b9 81 40 ff 90 0f 0b e8 b1 81 40 ff 90 <0f> 0b e8 a9 81 40 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000d3e66e8 EFLAGS: 00010287 RAX: ffffffff825f00bf RBX: 00000000ffffffea RCX: 0000000000100000 RDX: ffffc9000e7ea000 RSI: 0000000000005216 RDI: 0000000000005217 RBP: 0000000000000000 R08: ffffffff825efdbf R09: 1ffff110086edca0 R10: dffffc0000000000 R11: ffffed10086edca1 R12: ffff88804376e518 R13: 1ffff110086eda8e R14: 000000000000002b R15: 1ffff110086edca3 FS: 00007f7d95e8a6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7d95e68fe0 CR3: 000000003ed50000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_use_preallocated+0x680/0x1420 fs/ext4/mballoc.c:4904 ext4_mb_new_blocks+0x6ef/0x4e00 fs/ext4/mballoc.c:6208 ext4_alloc_branch fs/ext4/indirect.c:340 [inline] ext4_ind_map_blocks+0x108c/0x29e0 fs/ext4/indirect.c:635 ext4_map_create_blocks fs/ext4/inode.c:518 [inline] ext4_map_blocks+0x85d/0x1990 fs/ext4/inode.c:702 mpage_map_one_extent fs/ext4/inode.c:2219 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2272 [inline] ext4_do_writepages+0x15ac/0x3df0 fs/ext4/inode.c:2735 ext4_writepages+0x213/0x3c0 fs/ext4/inode.c:2824 do_writepages+0x35f/0x880 mm/page-writeback.c:2708 filemap_fdatawrite_wbc mm/filemap.c:388 [inline] __filemap_fdatawrite_range mm/filemap.c:421 [inline] file_write_and_wait_range+0x2a3/0x3c0 mm/filemap.c:778 generic_buffers_fsync_noflush+0x71/0x180 fs/buffer.c:600 ext4_fsync_nojournal fs/ext4/fsync.c:88 [inline] ext4_sync_file+0x40a/0xb90 fs/ext4/fsync.c:151 generic_write_sync include/linux/fs.h:2904 [inline] ext4_buffered_write_iter+0x284/0x350 fs/ext4/file.c:305 ext4_file_write_iter+0x892/0x1c50 do_iter_readv_writev+0x600/0x880 vfs_writev+0x376/0xba0 fs/read_write.c:1050 do_pwritev fs/read_write.c:1146 [inline] __do_sys_pwritev2 fs/read_write.c:1204 [inline] __se_sys_pwritev2+0x196/0x2b0 fs/read_write.c:1195 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: 0033:0x7f7d94f85d29 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:00007f7d95e8a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f7d95175fa0 RCX: 00007f7d94f85d29 RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000008 RBP: 00007f7d95001b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000005405 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f7d95175fa0 R15: 00007fff76a37388 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_mb_use_inode_pa+0x690/0x700 fs/ext4/mballoc.c:4687 Code: c0 6e af 8e 4c 89 e6 48 89 ea e8 9b dd 9b 02 e9 be fc ff ff e8 c1 81 40 ff 90 0f 0b e8 b9 81 40 ff 90 0f 0b e8 b1 81 40 ff 90 <0f> 0b e8 a9 81 40 ff 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000d3e66e8 EFLAGS: 00010287 RAX: ffffffff825f00bf RBX: 00000000ffffffea RCX: 0000000000100000 RDX: ffffc9000e7ea000 RSI: 0000000000005216 RDI: 0000000000005217 RBP: 0000000000000000 R08: ffffffff825efdbf R09: 1ffff110086edca0 R10: dffffc0000000000 R11: ffffed10086edca1 R12: ffff88804376e518 R13: 1ffff110086eda8e R14: 000000000000002b R15: 1ffff110086edca3 FS: 00007f7d95e8a6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7d95e68fe0 CR3: 000000003ed50000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400