divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8101 Comm: syz-executor362 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:dbNextAG+0xff/0x530 fs/jfs/jfs_dmap.c:615 Code: df 48 89 c1 48 89 04 24 83 e0 07 48 c1 e9 03 0f b6 0c 11 48 89 c2 83 c2 03 38 ca 7c 08 84 c9 0f 85 8a 03 00 00 44 89 f0 31 d2 <41> f7 74 24 14 49 89 c6 49 8d 44 24 20 48 89 c2 48 89 44 24 18 48 RSP: 0018:ffff8880b1477238 EFLAGS: 00010246 RAX: 00000000932f7300 RBX: ffff8880a50381c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880b057c548 RBP: ffff8880b057c540 R08: 0000000000000000 R09: ffffed10160af932 R10: ffff8880b057c997 R11: 0000000000074071 R12: ffff8880b057c540 R13: 0000000000000001 R14: 00000000932f7300 R15: ffff88808b04c180 FS: 0000555556599300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f89014c46c0 CR3: 00000000ab3a3000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dbAlloc+0x44b/0xb00 fs/jfs/jfs_dmap.c:857 dtSplitUp+0x365/0x4e70 fs/jfs/jfs_dtree.c:987 dtInsert+0x7fd/0xa00 fs/jfs/jfs_dtree.c:876 jfs_create.part.0+0x3c6/0x880 fs/jfs/namei.c:150 jfs_create+0x3f/0x60 fs/jfs/namei.c:90 lookup_open+0x893/0x1a20 fs/namei.c:3235 do_last fs/namei.c:3327 [inline] path_openat+0x1094/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7faa49b4be19 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe840ce398 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faa49b4be19 RDX: 000000000000275a RSI: 00000000200001c0 RDI: 00000000ffffff9c RBP: 00007faa49b0b680 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000073 R13: 0000000000000000 R14: 00080000000000fc R15: 0000000000000000 Modules linked in: ---[ end trace 7b75155e2b03922c ]--- RIP: 0010:dbNextAG+0xff/0x530 fs/jfs/jfs_dmap.c:615 Code: df 48 89 c1 48 89 04 24 83 e0 07 48 c1 e9 03 0f b6 0c 11 48 89 c2 83 c2 03 38 ca 7c 08 84 c9 0f 85 8a 03 00 00 44 89 f0 31 d2 <41> f7 74 24 14 49 89 c6 49 8d 44 24 20 48 89 c2 48 89 44 24 18 48 RSP: 0018:ffff8880b1477238 EFLAGS: 00010246 RAX: 00000000932f7300 RBX: ffff8880a50381c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880b057c548 RBP: ffff8880b057c540 R08: 0000000000000000 R09: ffffed10160af932 R10: ffff8880b057c997 R11: 0000000000074071 R12: ffff8880b057c540 R13: 0000000000000001 R14: 00000000932f7300 R15: ffff88808b04c180 FS: 0000555556599300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f89014c46c0 CR3: 00000000ab3a3000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: df 48 89 fisttps -0x77(%rax) 3: c1 48 89 04 rorl $0x4,-0x77(%rax) 7: 24 83 and $0x83,%al 9: e0 07 loopne 0x12 b: 48 c1 e9 03 shr $0x3,%rcx f: 0f b6 0c 11 movzbl (%rcx,%rdx,1),%ecx 13: 48 89 c2 mov %rax,%rdx 16: 83 c2 03 add $0x3,%edx 19: 38 ca cmp %cl,%dl 1b: 7c 08 jl 0x25 1d: 84 c9 test %cl,%cl 1f: 0f 85 8a 03 00 00 jne 0x3af 25: 44 89 f0 mov %r14d,%eax 28: 31 d2 xor %edx,%edx * 2a: 41 f7 74 24 14 divl 0x14(%r12) <-- trapping instruction 2f: 49 89 c6 mov %rax,%r14 32: 49 8d 44 24 20 lea 0x20(%r12),%rax 37: 48 89 c2 mov %rax,%rdx 3a: 48 89 44 24 18 mov %rax,0x18(%rsp) 3f: 48 rex.W