BUG at fs/jfs/jfs_dmap.c:3024 assert(bitno < 32) ------------[ cut here ]------------ kernel BUG at fs/jfs/jfs_dmap.c:3024! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 6076 Comm: syz.3.15 Not tainted 6.15.0-rc5-syzkaller-00123-g2c89c1b655c0 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025 RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3024 Code: f0 fd 90 0f 0b e8 a2 45 88 fe 48 c7 c7 00 51 a3 8b 48 c7 c6 40 4e a3 8b ba d0 0b 00 00 48 c7 c1 e0 58 a3 8b e8 03 03 f0 fd 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:ffffc9000afc7330 EFLAGS: 00010246 RAX: 0000000000000030 RBX: 0000000000000000 RCX: e368ddcfc5ad2e00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 00000000ffffffff R08: ffffc9000afc7007 R09: 1ffff920015f8e00 R10: dffffc0000000000 R11: fffff520015f8e01 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020 FS: 00007f0614ea96c0(0000) GS:ffff888126100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fafebd7bd58 CR3: 0000000033d5a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dbAllocDmapLev+0x16b/0x3c0 fs/jfs/jfs_dmap.c:1973 dbAllocCtl+0x14a/0x9b0 fs/jfs/jfs_dmap.c:1813 dbAllocAG+0x1e8/0xf10 fs/jfs/jfs_dmap.c:1349 dbAlloc+0x5a8/0xba0 fs/jfs/jfs_dmap.c:873 dtSplitUp fs/jfs/jfs_dtree.c:982 [inline] dtInsert+0xad5/0x5f40 fs/jfs/jfs_dtree.c:871 jfs_rename+0x7bc/0x1610 fs/jfs/namei.c:1225 vfs_rename+0xb99/0xec0 fs/namei.c:5121 do_renameat2+0x878/0xc50 fs/namei.c:5270 __do_sys_renameat2 fs/namei.c:5304 [inline] __se_sys_renameat2 fs/namei.c:5301 [inline] __x64_sys_renameat2+0xce/0xe0 fs/namei.c:5301 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0613f8e969 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:00007f0614ea9038 EFLAGS: 00000246 ORIG_RAX: 000000000000013c RAX: ffffffffffffffda RBX: 00007f06141b6080 RCX: 00007f0613f8e969 RDX: 0000000000000005 RSI: 0000200000000080 RDI: ffffffffffffff9c RBP: 00007f0614010ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000980 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f06141b6080 R15: 00007ffdc4cb09c8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3024 Code: f0 fd 90 0f 0b e8 a2 45 88 fe 48 c7 c7 00 51 a3 8b 48 c7 c6 40 4e a3 8b ba d0 0b 00 00 48 c7 c1 e0 58 a3 8b e8 03 03 f0 fd 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:ffffc9000afc7330 EFLAGS: 00010246 RAX: 0000000000000030 RBX: 0000000000000000 RCX: e368ddcfc5ad2e00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 00000000ffffffff R08: ffffc9000afc7007 R09: 1ffff920015f8e00 R10: dffffc0000000000 R11: fffff520015f8e01 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020 FS: 00007f0614ea96c0(0000) GS:ffff888126200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7108bbd000 CR3: 0000000033d5a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400