BUG at fs/jfs/jfs_dmap.c:3028 assert(bitno < 32) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_dmap.c:3028! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 PID: 12556 Comm: syz-executor.2 Not tainted 6.10.0-rc4-syzkaller-00217-g35bb670d65fc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:dbFindBits+0x1ce/0x1d0 fs/jfs/jfs_dmap.c:3028 Code: 57 08 90 0f 0b e8 52 f8 73 fe 48 c7 c7 20 61 02 8c 48 c7 c6 60 5e 02 8c ba d4 0b 00 00 48 c7 c1 00 69 02 8c e8 a3 dc 57 08 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 RSP: 0018:ffffc9000e50ee20 EFLAGS: 00010246 RAX: 0000000000000030 RBX: 0000000000000000 RCX: 68d6a54d59370400 RDX: ffffc90014209000 RSI: 00000000000085c8 RDI: 00000000000085c9 RBP: 0000000000000020 R08: ffffffff817690bc R09: fffffbfff1c39994 R10: dffffc0000000000 R11: fffffbfff1c39994 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f7be12a06c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200cd000 CR3: 000000007942c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dbAllocDmapLev+0x1e9/0x4a0 fs/jfs/jfs_dmap.c:1983 dbAllocCtl+0x113/0x920 fs/jfs/jfs_dmap.c:1823 dbAllocAG+0x28f/0x10b0 fs/jfs/jfs_dmap.c:1364 dbAlloc+0x658/0xca0 fs/jfs/jfs_dmap.c:888 dtSplitUp fs/jfs/jfs_dtree.c:979 [inline] dtInsert+0xda7/0x6b00 fs/jfs/jfs_dtree.c:868 jfs_create+0x7ba/0xb90 fs/jfs/namei.c:137 lookup_open fs/namei.c:3505 [inline] open_last_lookups fs/namei.c:3574 [inline] path_openat+0x1425/0x3280 fs/namei.c:3804 do_filp_open+0x235/0x490 fs/namei.c:3834 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_sys_openat fs/open.c:1436 [inline] __se_sys_openat fs/open.c:1431 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1431 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: 0033:0x7f7be047d0a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7be12a00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f7be05b4050 RCX: 00007f7be047d0a9 RDX: 000000000000275a RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00007f7be04ec074 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f7be05b4050 R15: 00007fffb17bde08 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dbFindBits+0x1ce/0x1d0 fs/jfs/jfs_dmap.c:3028 Code: 57 08 90 0f 0b e8 52 f8 73 fe 48 c7 c7 20 61 02 8c 48 c7 c6 60 5e 02 8c ba d4 0b 00 00 48 c7 c1 00 69 02 8c e8 a3 dc 57 08 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 RSP: 0018:ffffc9000e50ee20 EFLAGS: 00010246 RAX: 0000000000000030 RBX: 0000000000000000 RCX: 68d6a54d59370400 RDX: ffffc90014209000 RSI: 00000000000085c8 RDI: 00000000000085c9 RBP: 0000000000000020 R08: ffffffff817690bc R09: fffffbfff1c39994 R10: dffffc0000000000 R11: fffffbfff1c39994 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f7be12a06c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7be127fd58 CR3: 000000007942c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000003131 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400