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BUG: unable to handle kernel paging request in diUpdatePMap

Status: upstream: reported C repro on 2025/11/21 23:57
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+627db639be21372df038@syzkaller.appspotmail.com
First crash: 51d, last: 2d15h
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2026/01/07 upstream (ToT) f0b9d8eb98df C [report] BUG: unable to handle kernel paging request in diUpdatePMap
▶ ▼ Similar bugs (7)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in diUpdatePMap jfs 8 C 84 4d16h 66d 0/29 closed as dup on 2025/11/07 10:42
linux-4.19 general protection fault in diUpdatePMap 2 C error 1 1200d 1200d 0/1 upstream: reported C repro on 2022/09/29 12:21
linux-6.6 general protection fault in diUpdatePMap origin:upstream 8 C 11 20d 50d 0/2 upstream: reported C repro on 2025/11/22 23:25
linux-5.15 BUG: corrupted list in diUpdatePMap origin:upstream 8 C 3 6d11h 7d04h 0/3 upstream: reported C repro on 2026/01/05 06:26
upstream general protection fault in diUpdatePMap (2) jfs 2 1 513d 509d 0/29 auto-obsoleted due to no activity on 2024/11/15 06:41
upstream general protection fault in diUpdatePMap jfs 8 C error inconclusive 4 765d 1200d 0/29 auto-obsoleted due to no activity on 2024/03/18 02:12
linux-4.14 general protection fault in diUpdatePMap 2 C 1 1057d 1200d 0/1 upstream: reported C repro on 2022/09/30 10:17

Sample crash report:
Unable to handle kernel paging request at virtual address fbd5200000000021
KASAN: maybe wild-memory-access in range [0xdead000000000108-0xdead00000000010f]
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004
  CM = 0, WnR = 0
[fbd5200000000021] address between user and kernel address ranges
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 92 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __list_add_valid+0x3c/0x110 lib/list_debug.c:27
lr : __list_add include/linux/list.h:69 [inline]
lr : list_add include/linux/list.h:88 [inline]
lr : diUpdatePMap+0x4e8/0xb90 fs/jfs/jfs_imap.c:2831
sp : ffff80001ceb7bb0
x29: ffff80001ceb7bb0 x28: dfff800000000000 x27: 0000000080000000
x26: 0000000000000000 x25: dead000000000100 x24: ffff0000d98498c8
x23: dfff800000000000 x22: dead000000000108 x21: ffff0000d98498c8
x20: ffff80001fd04230 x19: dead000000000100 x18: ffff800011a5bd40
x17: 1fffe00033ee7b7e x16: ffff8000082e8d70 x15: 0000000040000000
x14: 0000000000000100 x13: 1ffff00002a0a0b1 x12: 0000000000ff0100
x11: ff0080000986bbbc x10: 0000000000000000 x9 : 0000000000000000
x8 : 1bd5a00000000021 x7 : ffff80000986bb98 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff8000082e8e90
x2 : dead000000000100 x1 : ffff80001fd04230 x0 : ffff0000d98498c8
Call trace:
 __list_add_valid+0x3c/0x110 lib/list_debug.c:27
 __list_add include/linux/list.h:69 [inline]
 list_add include/linux/list.h:88 [inline]
 diUpdatePMap+0x4e8/0xb90 fs/jfs/jfs_imap.c:2831
 txUpdateMap+0x5ec/0x79c fs/jfs/jfs_txnmgr.c:2357
 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
 jfs_lazycommit+0x378/0x918 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Code: aa0103f4 d343fec8 f2fbfff7 aa0003f5 (38776908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa0103f4 	mov	x20, x1
   4:	d343fec8 	lsr	x8, x22, #3
   8:	f2fbfff7 	movk	x23, #0xdfff, lsl #48
   c:	aa0003f5 	mov	x21, x0
* 10:	38776908 	ldrb	w8, [x8, x23] <-- trapping instruction

Crashes (18):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/29 09:19 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-1-kasan-arm64 BUG: unable to handle kernel paging request in diUpdatePMap
2025/12/29 08:24 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: unable to handle kernel paging request in diUpdatePMap
2025/12/18 21:39 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: unable to handle kernel paging request in diUpdatePMap
2025/12/08 02:58 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: unable to handle kernel paging request in diUpdatePMap
2025/12/07 23:20 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: unable to handle kernel paging request in diUpdatePMap
2025/11/22 00:00 linux-6.1.y f6e38ae624cf 4fb8ef37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: unable to handle kernel paging request in diUpdatePMap
2025/11/21 23:57 linux-6.1.y f6e38ae624cf 4fb8ef37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: unable to handle kernel paging request in diUpdatePMap
2026/01/09 19:32 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in diUpdatePMap
2026/01/02 23:50 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in diUpdatePMap
2025/12/31 04:41 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in diUpdatePMap
2025/12/24 03:03 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: corrupted list in diUpdatePMap
2025/12/22 21:04 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: corrupted list in diUpdatePMap
2025/12/22 21:02 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: corrupted list in diUpdatePMap
2025/12/22 21:01 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: corrupted list in diUpdatePMap
2025/12/20 05:26 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in diUpdatePMap
2025/12/19 06:50 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: corrupted list in diUpdatePMap
2025/12/04 01:04 linux-6.1.y f6e38ae624cf d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in diUpdatePMap
2025/11/23 19:28 linux-6.1.y f6e38ae624cf 4fb8ef37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan general protection fault in diUpdatePMap
* Struck through repros no longer work on HEAD.