bn = 0, index = 0
bn = 72c, index = 96
bn = 0, index = 0
bn = 72c, index = 96
bn = 0, index = 0
bn = 72c, index = 96
bn = 0, index = 0
bn = 0, index = 0
general protection fault, probably for non-canonical address 0xdffffc0000000037: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001b8-0x00000000000001bf]
CPU: 1 PID: 4553 Comm: syz.1.9 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:folio_write_one+0x2a4/0x690 mm/page-writeback.c:2543
Code: 00 00 00 e8 3e a2 24 00 f0 41 ff 04 24 48 8b 44 24 18 4c 8d a8 b8 01 00 00 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 6e a0 24 00 4c 89 7c 24 10 4d 8b 6d
RSP: 0018:ffffc9000540f800 EFLAGS: 00010202
RAX: 0000000000000037 RBX: ffffea0001ed5440 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea0001ed5474
RBP: ffffc9000540f930 R08: ffffea0001ed5477 R09: 1ffffd40003daa8e
R10: dffffc0000000000 R11: fffff940003daa8f R12: ffffea0001ed5474
R13: 00000000000001b8 R14: 1ffff92000a81f04 R15: 1ffffd40003daa8e
FS: 00007fb2f13f66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63479afe9c CR3: 000000007d19d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
write_one_page include/linux/pagemap.h:1106 [inline]
release_metapage+0x4d6/0x980 fs/jfs/jfs_metapage.c:749
dtSearch+0x1b43/0x2050 fs/jfs/jfs_dtree.c:793
jfs_symlink+0x851/0xfb0 fs/jfs/namei.c:1016
vfs_symlink+0x247/0x3d0 fs/namei.c:4479
do_symlinkat+0x1b6/0x400 fs/namei.c:4508
__do_sys_symlink fs/namei.c:4530 [inline]
__se_sys_symlink fs/namei.c:4528 [inline]
__x64_sys_symlink+0x7a/0x90 fs/namei.c:4528
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb2f319c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb2f13f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007fb2f3416090 RCX: 00007fb2f319c819
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000200000001640
RBP: 00007fb2f3232c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb2f3416128 R14: 00007fb2f3416090 R15: 00007ffc3addc8c8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_write_one+0x2a4/0x690 mm/page-writeback.c:2543
Code: 00 00 00 e8 3e a2 24 00 f0 41 ff 04 24 48 8b 44 24 18 4c 8d a8 b8 01 00 00 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 6e a0 24 00 4c 89 7c 24 10 4d 8b 6d
RSP: 0018:ffffc9000540f800 EFLAGS: 00010202
RAX: 0000000000000037 RBX: ffffea0001ed5440 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea0001ed5474
RBP: ffffc9000540f930 R08: ffffea0001ed5477 R09: 1ffffd40003daa8e
R10: dffffc0000000000 R11: fffff940003daa8f R12: ffffea0001ed5474
R13: 00000000000001b8 R14: 1ffff92000a81f04 R15: 1ffffd40003daa8e
FS: 00007fb2f13f66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9509c6000 CR3: 000000007d19d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 e8 add %ch,%al
4: 3e a2 24 00 f0 41 ff ds movabs %al,0x482404ff41f00024
b: 04 24 48
e: 8b 44 24 18 mov 0x18(%rsp),%eax
12: 4c 8d a8 b8 01 00 00 lea 0x1b8(%rax),%r13
19: 4c 89 e8 mov %r13,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ef mov %r13,%rdi
33: e8 6e a0 24 00 call 0x24a0a6
38: 4c 89 7c 24 10 mov %r15,0x10(%rsp)
3d: 4d rex.WRB
3e: 8b .byte 0x8b
3f: 6d insl (%dx),%es:(%rdi)