loop0: detected capacity change from 0 to 32768 syz.0.0: attempt to access beyond end of device loop0: rw=8388608, sector=616, nr_sectors = 8 limit=64 Read error 10 at 0x4d000 read_mapping_page failed! bread failed! xtLookup: xtSearch returned -5 syz.0.0: attempt to access beyond end of device loop0: rw=8388608, sector=616, nr_sectors = 8 limit=64 Read error 10 at 0x4d000 read_mapping_page failed! bread failed! syz.0.0: attempt to access beyond end of device loop0: rw=8388608, sector=616, nr_sectors = 8 limit=64 Read error 10 at 0x4d000 read_mapping_page failed! bread failed! BUG at fs/jfs/jfs_txnmgr.c:530 assert(tblk->next == 0) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:530! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:530 Code: e9 cc fe ff ff e8 51 73 52 fe 48 c7 c7 a0 42 4e 8c 48 c7 c6 99 3e 4e 8c ba 12 02 00 00 48 c7 c1 e0 42 4e 8c e8 82 13 b2 fd 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0000:ffffc9000f9bf5c0 EFLAGS: 00010246 RAX: 0000000000000036 RBX: ffff8880533cc800 RCX: 0b14a8dd57239100 RDX: ffffc9000f041000 RSI: 000000000004bcf0 RDI: 000000000004bcf1 RBP: ffffc900010fa212 R08: ffff88801fa24713 R09: 1ffff11003f448e2 R10: dffffc0000000000 R11: ffffed1003f448e3 R12: 1ffff9200021f447 R13: dffffc0000000000 R14: ffffc900010fa238 R15: 0000000000000021 FS: 00007f517066c6c0(0000) GS:ffff88808b0b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005626b8ecbc08 CR3: 0000000045191000 CR4: 0000000000352ef0 Call Trace: jfs_truncate_nolock+0x2b6/0x340 fs/jfs/inode.c:399 jfs_truncate+0xce/0x140 fs/jfs/inode.c:420 jfs_direct_IO+0x1f4/0x220 fs/jfs/inode.c:350 generic_file_direct_write+0x1d0/0x3f0 mm/filemap.c:4308 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4477 generic_file_write_iter+0xae/0x330 mm/filemap.c:4517 iter_file_splice_write+0xa31/0x1240 fs/splice.c:736 do_splice_from fs/splice.c:936 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1159 splice_direct_to_actor+0x57b/0xcb0 fs/splice.c:1103 do_splice_direct_actor fs/splice.c:1202 [inline] do_splice_direct+0x195/0x290 fs/splice.c:1228 do_sendfile+0x52e/0x7c0 fs/read_write.c:1371 __do_sys_sendfile64 fs/read_write.c:1432 [inline] __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1418 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f516f79e2d9 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:00007f517066bfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f516fa25fa0 RCX: 00007f516f79e2d9 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005 RBP: 00007f516f835888 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f516fa26038 R14: 00007f516fa25fa0 R15: 00007ffe490bf278 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:530 Code: e9 cc fe ff ff e8 51 73 52 fe 48 c7 c7 a0 42 4e 8c 48 c7 c6 99 3e 4e 8c ba 12 02 00 00 48 c7 c1 e0 42 4e 8c e8 82 13 b2 fd 90 <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0000:ffffc9000f9bf5c0 EFLAGS: 00010246 RAX: 0000000000000036 RBX: ffff8880533cc800 RCX: 0b14a8dd57239100 RDX: ffffc9000f041000 RSI: 000000000004bcf0 RDI: 000000000004bcf1 RBP: ffffc900010fa212 R08: ffff88801fa24713 R09: 1ffff11003f448e2 R10: dffffc0000000000 R11: ffffed1003f448e3 R12: 1ffff9200021f447 R13: dffffc0000000000 R14: ffffc900010fa238 R15: 0000000000000021 FS: 00007f517066c6c0(0000) GS:ffff88808b0b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005626b8ecbc08 CR3: 0000000045191000 CR4: 0000000000352ef0