loop0: detected capacity change from 0 to 32768 overlay: ./file1 is not a directory jfs: Unknown parameter '93g+G/#矏p˒g6ȿ' 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] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5339 Comm: syz.0.0 Not tainted 6.16.0-rc5-syzkaller-00266-g3f31a806a62e #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:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3028 Code: ea fd 90 0f 0b e8 72 a5 82 fe 48 c7 c7 00 d0 c3 8b 48 c7 c6 40 cd c3 8b ba d4 0b 00 00 48 c7 c1 e0 d7 c3 8b e8 03 0f ea 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:ffffc9000d347570 EFLAGS: 00010246 RAX: 0000000000000030 RBX: 0000000000000000 RCX: 05c95604fc4eb700 RDX: ffffc9000e042000 RSI: 0000000000001e9d RDI: 0000000000001e9e RBP: 00000000ffffffff R08: ffffc9000d347287 R09: 1ffff92001a68e50 R10: dffffc0000000000 R11: fffff52001a68e51 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020 FS: 00007f1b0eaa86c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0f05b909c0 CR3: 0000000044092000 CR4: 0000000000352ef0 Call Trace: dbAllocDmapLev+0x16b/0x3c0 fs/jfs/jfs_dmap.c:1977 dbAllocCtl+0x14a/0x9b0 fs/jfs/jfs_dmap.c:1817 dbAllocAG+0x1e8/0xf10 fs/jfs/jfs_dmap.c:1353 dbAlloc+0x5a8/0xba0 fs/jfs/jfs_dmap.c:877 dtSplitUp fs/jfs/jfs_dtree.c:982 [inline] dtInsert+0xad5/0x5f40 fs/jfs/jfs_dtree.c:871 jfs_link+0x312/0x550 fs/jfs/namei.c:826 vfs_link+0x4ea/0x6e0 fs/namei.c:4863 do_linkat+0x272/0x560 fs/namei.c:4933 __do_sys_link fs/namei.c:4967 [inline] __se_sys_link fs/namei.c:4965 [inline] __x64_sys_link+0x82/0x90 fs/namei.c:4965 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: 0033:0x7f1b0db8e929 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:00007f1b0eaa8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 RAX: ffffffffffffffda RBX: 00007f1b0ddb5fa0 RCX: 00007f1b0db8e929 RDX: 0000000000000000 RSI: 0000200000000bc0 RDI: 0000200000001240 RBP: 00007f1b0dc10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1b0ddb5fa0 R15: 00007ffc176a6388 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3028 Code: ea fd 90 0f 0b e8 72 a5 82 fe 48 c7 c7 00 d0 c3 8b 48 c7 c6 40 cd c3 8b ba d4 0b 00 00 48 c7 c1 e0 d7 c3 8b e8 03 0f ea 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:ffffc9000d347570 EFLAGS: 00010246 RAX: 0000000000000030 RBX: 0000000000000000 RCX: 05c95604fc4eb700 RDX: ffffc9000e042000 RSI: 0000000000001e9d RDI: 0000000000001e9e RBP: 00000000ffffffff R08: ffffc9000d347287 R09: 1ffff92001a68e50 R10: dffffc0000000000 R11: fffff52001a68e51 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000020 FS: 00007f1b0eaa86c0(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1b0ea85fb8 CR3: 0000000044092000 CR4: 0000000000352ef0