BUG at fs/jfs/jfs_txnmgr.c:661 assert(last) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_txnmgr.c:661! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 8654 Comm: syz.9.283 Not tainted 6.16.0-rc3-syzkaller-00042-g78f4e737a53e #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:txLock+0x1b79/0x1cb0 fs/jfs/jfs_txnmgr.c:661 Code: e9 6a f8 ff ff e8 07 5f 81 fe 48 c7 c7 a0 f1 c3 8b 48 c7 c6 99 ed c3 8b ba 95 02 00 00 48 c7 c1 a0 f2 c3 8b e8 08 9d e8 fd 90 <0f> 0b e8 e0 5e 81 fe 48 c7 c7 60 f3 c3 8b e8 f4 9c e8 fd 48 c7 c7 RSP: 0018:ffffc90003ba6b20 EFLAGS: 00010246 RAX: 000000000000002b RBX: 0000000000000000 RCX: 2254c054f01b9600 RDX: ffffc9001630b000 RSI: 0000000000011c9b RDI: 0000000000011c9c RBP: ffffc90003ba6c48 R08: ffffc90003ba6847 R09: 1ffff92000774d08 R10: dffffc0000000000 R11: fffff52000774d09 R12: 1ffff92000519400 R13: ffffc900028ca000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f94396cc6c0(0000) GS:ffff888125c83000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560ac1122950 CR3: 000000004b68c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: diWrite+0x444/0x1f40 fs/jfs/jfs_imap.c:654 txCommit+0x852/0x5430 fs/jfs/jfs_txnmgr.c:1255 jfs_commit_inode+0x2ef/0x530 fs/jfs/inode.c:108 extAlloc+0xc3b/0xfb0 fs/jfs/jfs_extent.c:177 jfs_get_block+0x346/0xab0 fs/jfs/inode.c:248 __block_write_begin_int+0x6b5/0x1900 fs/buffer.c:2151 block_write_begin+0x8a/0x120 fs/buffer.c:2262 jfs_write_begin+0x35/0x80 fs/jfs/inode.c:299 generic_perform_write+0x2c7/0x910 mm/filemap.c:4112 __generic_file_write_iter+0x1ae/0x230 mm/filemap.c:4226 generic_file_write_iter+0x10f/0x540 mm/filemap.c:4255 iter_file_splice_write+0x93a/0x1000 fs/splice.c:738 do_splice_from fs/splice.c:935 [inline] direct_splice_actor+0x101/0x160 fs/splice.c:1158 splice_direct_to_actor+0x5a5/0xcc0 fs/splice.c:1102 do_splice_direct_actor fs/splice.c:1201 [inline] do_splice_direct+0x181/0x270 fs/splice.c:1227 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f943878e929 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:00007f94396cc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f94389b5fa0 RCX: 00007f943878e929 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006 RBP: 00007f9438810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f94389b5fa0 R15: 00007ffe870d2d48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:txLock+0x1b79/0x1cb0 fs/jfs/jfs_txnmgr.c:661 Code: e9 6a f8 ff ff e8 07 5f 81 fe 48 c7 c7 a0 f1 c3 8b 48 c7 c6 99 ed c3 8b ba 95 02 00 00 48 c7 c1 a0 f2 c3 8b e8 08 9d e8 fd 90 <0f> 0b e8 e0 5e 81 fe 48 c7 c7 60 f3 c3 8b e8 f4 9c e8 fd 48 c7 c7 RSP: 0018:ffffc90003ba6b20 EFLAGS: 00010246 RAX: 000000000000002b RBX: 0000000000000000 RCX: 2254c054f01b9600 RDX: ffffc9001630b000 RSI: 0000000000011c9b RDI: 0000000000011c9c RBP: ffffc90003ba6c48 R08: ffffc90003ba6847 R09: 1ffff92000774d08 R10: dffffc0000000000 R11: fffff52000774d09 R12: 1ffff92000519400 R13: ffffc900028ca000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f94396cc6c0(0000) GS:ffff888125c83000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560ac1122950 CR3: 000000004b68c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400