loop0: detected capacity change from 0 to 32768 loop0: detected capacity change from 32768 to 64 syz.0.0: attempt to access beyond end of device loop0: rw=1, sector=400, nr_sectors = 8 limit=64 metapage_write_end_io: I/O error ERROR: (device loop0): release_metapage: metapage_write_one() failed ERROR: (device loop0): remounting filesystem as read-only syz.0.0: attempt to access beyond end of device loop0: rw=0, sector=152, nr_sectors = 8 limit=64 Read error 10 at 0x3000 read_mapping_page failed! BUG at fs/jfs/jfs_txnmgr.c:529 assert(tblk->next == 0) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:529! 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~bpo12+1 04/01/2014 RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:529 Code: e9 cc fe ff ff e8 31 3a 77 fe 48 c7 c7 60 bc a4 8b 48 c7 c6 59 b8 a4 8b ba 11 02 00 00 48 c7 c1 a0 bc a4 8b e8 62 b8 de 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: 0018:ffffc9000d377b00 EFLAGS: 00010246 RAX: 0000000000000036 RBX: ffff888051361000 RCX: 756f5a52fd475b00 RDX: ffffc9000dd42000 RSI: 0000000000003555 RDI: 0000000000003556 RBP: ffffc900013c9332 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bba650 R12: 1ffff9200027926b R13: dffffc0000000000 R14: ffffc900013c9358 R15: 0000000000000009 FS: 00007f40d7f8a6c0(0000) GS:ffff88808d733000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba15e8f2b0 CR3: 00000000428f7000 CR4: 0000000000352ef0 Call Trace: jfs_mkdir+0x344/0xa70 fs/jfs/namei.c:293 vfs_mkdir+0x306/0x510 fs/namei.c:4453 do_mkdirat+0x247/0x590 fs/namei.c:4486 __do_sys_mkdirat fs/namei.c:4503 [inline] __se_sys_mkdirat fs/namei.c:4501 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4501 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f40d718efc9 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:00007f40d7f8a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f40d73e5fa0 RCX: 00007f40d718efc9 RDX: 0000000000000000 RSI: 0000200000000200 RDI: 0000000000000004 RBP: 00007f40d7211f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f40d73e6038 R14: 00007f40d73e5fa0 R15: 00007ffdf5c20ba8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txEnd+0x51f/0x530 fs/jfs/jfs_txnmgr.c:529 Code: e9 cc fe ff ff e8 31 3a 77 fe 48 c7 c7 60 bc a4 8b 48 c7 c6 59 b8 a4 8b ba 11 02 00 00 48 c7 c1 a0 bc a4 8b e8 62 b8 de 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: 0018:ffffc9000d377b00 EFLAGS: 00010246 RAX: 0000000000000036 RBX: ffff888051361000 RCX: 756f5a52fd475b00 RDX: ffffc9000dd42000 RSI: 0000000000003555 RDI: 0000000000003556 RBP: ffffc900013c9332 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bba650 R12: 1ffff9200027926b R13: dffffc0000000000 R14: ffffc900013c9358 R15: 0000000000000009 FS: 00007f40d7f8a6c0(0000) GS:ffff88808d733000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba15e8f2b0 CR3: 00000000428f7000 CR4: 0000000000352ef0