Locker's tblock: ffffc900026190e0: 8c0c1460 ffffffff 00000300 00000000
Locker's tblock: ffffc900026190f0: 026190f0 ffffc900 026190f0 ffffc900
Locker's tblock: ffffc90002619100: 00000000 00000000 00000000 00000000
Tlock: ffffc9000283a120: 00010003 20018040 2cb828b8 ffff8880
Tlock: ffffc9000283a130: 53ef3050 ffff8880 03140000 05002000
Tlock: ffffc9000283a140: 011b0100 00000109 00000000 00000000
Tlock: ffffc9000283a150: 00000000 00000000 00000000 00000000
Tlock: ffffc9000283a160: 00000000 00000000
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_txnmgr.c:836!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 9022 Comm: syz.7.688 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:txLock+0x1c7a/0x1cc0 fs/jfs/jfs_txnmgr.c:836
Code: 48 c7 c6 c0 1a 0c 8c ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 4c 24 30 6a 00 6a 48 e8 4b 4b 4f 01 48 83 c4 10 90 <0f> 0b e8 af a1 62 fe 4c 89 ff 48 c7 c6 a0 22 0c 8c e8 50 f8 c4 fd
RSP: 0018:ffffc90006db6c80 EFLAGS: 00010282
RAX: 85e505d4207a5600 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc900073e9000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90006db6da8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1cfd220 R12: 0000000000000010
R13: dffffc0000000000 R14: 1ffff92000507424 R15: ffffc9000283a122
FS:  00007f36287e96c0(0000) GS:ffff8881252a0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000001a000 CR3: 0000000046990000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 xtSplitRoot+0x6d5/0x1010 fs/jfs/jfs_xtree.c:1297
 xtSplitUp+0x35b/0x1fc0 fs/jfs/jfs_xtree.c:785
 xtInsert+0x452/0xf20 fs/jfs/jfs_xtree.c:608
 extAlloc+0xad9/0x1020 fs/jfs/jfs_extent.c:150
 jfs_get_block+0x358/0xad0 fs/jfs/inode.c:254
 __block_write_begin_int+0x6c6/0x1910 fs/buffer.c:2042
 block_write_begin+0x8d/0x120 fs/buffer.c:2153
 jfs_write_begin+0x35/0x80 fs/jfs/inode.c:306
 generic_perform_write+0x2e2/0x8f0 mm/filemap.c:4325
 generic_file_write_iter+0x14a/0x680 mm/filemap.c:4468
 do_iter_readv_writev+0x619/0x8c0 fs/read_write.c:-1
 vfs_writev+0x33c/0x990 fs/read_write.c:1059
 do_pwritev fs/read_write.c:1155 [inline]
 __do_sys_pwritev2 fs/read_write.c:1213 [inline]
 __se_sys_pwritev2+0x184/0x2a0 fs/read_write.c:1204
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f362799ce59
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:00007f36287e9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f3627c15fa0 RCX: 00007f362799ce59
RDX: 0000000000000001 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f3627a32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000800001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3627c16038 R14: 00007f3627c15fa0 R15: 00007ffc16ea7ba8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:txLock+0x1c7a/0x1cc0 fs/jfs/jfs_txnmgr.c:836
Code: 48 c7 c6 c0 1a 0c 8c ba 01 00 00 00 b9 10 00 00 00 41 b8 04 00 00 00 4c 8b 4c 24 30 6a 00 6a 48 e8 4b 4b 4f 01 48 83 c4 10 90 <0f> 0b e8 af a1 62 fe 4c 89 ff 48 c7 c6 a0 22 0c 8c e8 50 f8 c4 fd
RSP: 0018:ffffc90006db6c80 EFLAGS: 00010282
RAX: 85e505d4207a5600 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc900073e9000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90006db6da8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1cfd220 R12: 0000000000000010
R13: dffffc0000000000 R14: 1ffff92000507424 R15: ffffc9000283a122
FS:  00007f36287e96c0(0000) GS:ffff8881252a0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000001a000 CR3: 0000000046990000 CR4: 0000000000350ef0