loop3: detected capacity change from 0 to 32768 Oops: divide error: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 3730 Comm: syz.3.8667 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:dbAllocAG+0x40f/0xd20 fs/jfs/jfs_dmap.c:1399 Code: f9 48 c1 e9 03 0f b6 0c 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 a6 08 00 00 41 8b 4d 2c 49 8d 7d 30 99 48 89 fe f9 48 ba 00 00 00 00 00 fc ff df 48 c1 ee 03 0f b6 14 16 84 d2 RSP: 0018:ffffc9000c077770 EFLAGS: 00010246 RAX: 0000000000000400 RBX: 000000000000000a RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88802628b030 RDI: ffff88802628b030 RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000001f R10: 000000000000000a R11: 0000000000000000 R12: ffff888033e83000 R13: ffff88802628b000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f84f045f6c0(0000) GS:ffff888124e5a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d31fffc CR3: 000000004f15a000 CR4: 0000000000350ef0 Call Trace: dbAlloc+0x417/0xac0 fs/jfs/jfs_dmap.c:888 xtInsert+0x467/0xf60 fs/jfs/jfs_xtree.c:567 jfs_symlink+0xa3e/0x10e0 fs/jfs/namei.c:989 vfs_symlink fs/namei.c:4688 [inline] vfs_symlink+0x403/0x680 fs/namei.c:4672 do_symlinkat+0x261/0x310 fs/namei.c:4714 __do_sys_symlink fs/namei.c:4735 [inline] __se_sys_symlink fs/namei.c:4733 [inline] __x64_sys_symlink+0x75/0x90 fs/namei.c:4733 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f84ef58d169 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:00007f84f045f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 00007f84ef7a5fa0 RCX: 00007f84ef58d169 RDX: 0000000000000000 RSI: 0000200000000cc0 RDI: 000020000000a900 RBP: 00007f84ef60e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f84ef7a5fa0 R15: 00007ffe94b40fe8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dbAllocAG+0x40f/0xd20 fs/jfs/jfs_dmap.c:1399 Code: f9 48 c1 e9 03 0f b6 0c 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 a6 08 00 00 41 8b 4d 2c 49 8d 7d 30 99 48 89 fe f9 48 ba 00 00 00 00 00 fc ff df 48 c1 ee 03 0f b6 14 16 84 d2 RSP: 0018:ffffc9000c077770 EFLAGS: 00010246 RAX: 0000000000000400 RBX: 000000000000000a RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88802628b030 RDI: ffff88802628b030 RBP: 0000000000000000 R08: 0000000000000005 R09: 000000000000001f R10: 000000000000000a R11: 0000000000000000 R12: ffff888033e83000 R13: ffff88802628b000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f84f045f6c0(0000) GS:ffff888124f5a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004f15a000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: f9 stc 1: 48 c1 e9 03 shr $0x3,%rcx 5: 0f b6 0c 11 movzbl (%rcx,%rdx,1),%ecx 9: 48 89 fa mov %rdi,%rdx c: 83 e2 07 and $0x7,%edx f: 83 c2 03 add $0x3,%edx 12: 38 ca cmp %cl,%dl 14: 7c 08 jl 0x1e 16: 84 c9 test %cl,%cl 18: 0f 85 a6 08 00 00 jne 0x8c4 1e: 41 8b 4d 2c mov 0x2c(%r13),%ecx 22: 49 8d 7d 30 lea 0x30(%r13),%rdi 26: 99 cltd 27: 48 89 fe mov %rdi,%rsi * 2a: f7 f9 idiv %ecx <-- trapping instruction 2c: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 33: fc ff df 36: 48 c1 ee 03 shr $0x3,%rsi 3a: 0f b6 14 16 movzbl (%rsi,%rdx,1),%edx 3e: 84 d2 test %dl,%dl