syzbot
BUG: unable to handle kernel paging request in diRead
Status:
upstream: reported C repro on 2024/10/06 20:00
Bug presence:
origin:upstream
[Documentation on labels]
Reported-by: syzbot+dea26bb7ef49ab312263@syzkaller.appspotmail.com
First crash: 659d, last: 36d
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Bug presence (1)
| Date |
Name |
Commit |
Repro |
Result |
| 2024/10/12 |
upstream (ToT) |
7234e2ea0edd |
C
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[report] BUG: unable to handle kernel paging request in diRead
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Last patch testing requests (10)
Sample crash report:
Unable to handle kernel paging request at virtual address dfff800000000104
Mem abort info:
ESR = 0x0000000096000006
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x06: level 2 translation fault
Data abort info:
ISV = 0, ISS = 0x00000006
CM = 0, WnR = 0
[dfff800000000104] address between user and kernel address ranges
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4816 Comm: syz-executor259 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
pc : diRead+0x140/0xa40 fs/jfs/jfs_imap.c:316
lr : diRead+0x138/0xa40 fs/jfs/jfs_imap.c:315
sp : ffff800021c67410
x29: ffff800021c67460 x28: dfff800000000000 x27: 1ffff0000438ceca
x26: ffff0000e1bc4e58 x25: ffff70000438cea4 x24: 0000000000000820
x23: ffff0000e19a9c88 x22: ffff0000e19a9ff0 x21: ffff0000e1bc4e70
x20: 0000000000000000 x19: 0000000000000004 x18: ffff800021c670e0
x17: 0000000000000000 x16: ffff800011ac2570 x15: 000000000001043e
x14: ffff80001713e500 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000104 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff8000082e3f1c
x2 : 0000000000000001 x1 : 0000000000000008 x0 : 0000000000000001
Call trace:
diIAGRead fs/jfs/jfs_imap.c:2665 [inline]
diRead+0x140/0xa40 fs/jfs/jfs_imap.c:316
jfs_iget+0x88/0x364 fs/jfs/inode.c:35
jfs_lookup+0x1e8/0x39c fs/jfs/namei.c:1467
lookup_open fs/namei.c:3440 [inline]
open_last_lookups fs/namei.c:3532 [inline]
path_openat+0xd9c/0x26cc fs/namei.c:3739
do_filp_open+0x1a8/0x3b4 fs/namei.c:3769
do_sys_openat2+0x128/0x3e0 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__arm64_sys_openat+0x1f0/0x240 fs/open.c:1280
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: f85802d4 97a8bf15 91208298 d343ff08 (387c6908)
---[ end trace eeb226db4c5fd611 ]---
----------------
Code disassembly (best guess):
0: f85802d4 ldur x20, [x22, #-128]
4: 97a8bf15 bl 0xfffffffffea2fc58
8: 91208298 add x24, x20, #0x820
c: d343ff08 lsr x8, x24, #3
* 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction
* Struck through repros no longer work on HEAD.