syzbot

 sign-in | mailing list | source | docs
🐞 Open [828]
🐞 Fixed [84]
🐞 Invalid [1078]
⬇ Missing Backports [128]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

KASAN: user-memory-access Write in __destroy_inode

Status: upstream: reported C repro on 2023/05/28 20:49
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+8cc84e9be19865da71db@syzkaller.appspotmail.com
First crash: 889d, last: 5d19h
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2023/05/28 upstream (ToT) 7877cb91f108 C [report] KASAN: user-memory-access Write in __destroy_inode
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: user-memory-access Write in __destroy_inode jfs 23 C error 3415 3h05m 914d 0/29 upstream: reported C repro on 2023/05/04 09:32
linux-6.1 KASAN: user-memory-access Write in __destroy_inode origin:upstream 23 C error 346 2h25m 883d 0/3 upstream: reported C repro on 2023/06/03 22:53
▶ ▼ Last patch testing requests (9)
Created Duration User Patch Repo Result
2025/09/28 05:00 13m retest repro linux-5.15.y report log
2025/09/28 05:00 10m retest repro linux-5.15.y report log
2025/08/15 02:20 1h54m retest repro linux-5.15.y report log
2025/08/15 02:20 1h46m retest repro linux-5.15.y report log
2025/07/17 08:27 11m retest repro linux-5.15.y report log
2025/07/17 08:27 8m retest repro linux-5.15.y report log
2025/05/06 06:08 14m retest repro linux-5.15.y report log
2025/05/06 06:08 13m retest repro linux-5.15.y report log
2025/05/06 06:08 14m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (9)
Created Duration User Patch Repo Result
2024/05/27 20:14 0m bisect fix linux-5.15.y error job log
2024/03/27 04:10 1h44m bisect fix linux-5.15.y OK (0) job log log
2024/02/25 18:37 55m bisect fix linux-5.15.y OK (0) job log log
2024/01/17 16:21 1h26m bisect fix linux-5.15.y OK (0) job log log
2023/12/17 19:49 2h03m bisect fix linux-5.15.y OK (0) job log log
2023/11/17 12:39 2h28m bisect fix linux-5.15.y OK (0) job log log
2023/10/17 05:09 1h43m bisect fix linux-5.15.y OK (0) job log log
2023/09/12 20:14 1h47m bisect fix linux-5.15.y OK (0) job log log
2023/06/29 00:30 1h09m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 6
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 7
==================================================================
BUG: KASAN: user-memory-access in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: user-memory-access in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline]
BUG: KASAN: user-memory-access in __refcount_sub_and_test include/linux/refcount.h:272 [inline]
BUG: KASAN: user-memory-access in __refcount_dec_and_test include/linux/refcount.h:315 [inline]
BUG: KASAN: user-memory-access in refcount_dec_and_test include/linux/refcount.h:333 [inline]
BUG: KASAN: user-memory-access in posix_acl_release include/linux/posix_acl.h:57 [inline]
BUG: KASAN: user-memory-access in __destroy_inode+0x43c/0x5f0 fs/inode.c:298
Write of size 4 at addr 0000000b00000000 by task syz-executor/4330

CPU: 0 PID: 4330 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 __kasan_report mm/kasan/report.c:438 [inline]
 kasan_report+0xd5/0x130 mm/kasan/report.c:451
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x27b/0x290 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline]
 __refcount_sub_and_test include/linux/refcount.h:272 [inline]
 __refcount_dec_and_test include/linux/refcount.h:315 [inline]
 refcount_dec_and_test include/linux/refcount.h:333 [inline]
 posix_acl_release include/linux/posix_acl.h:57 [inline]
 __destroy_inode+0x43c/0x5f0 fs/inode.c:298
 destroy_inode fs/inode.c:309 [inline]
 evict+0x72e/0x870 fs/inode.c:662
 dispose_list fs/inode.c:680 [inline]
 evict_inodes+0x604/0x690 fs/inode.c:734
 generic_shutdown_super+0x93/0x300 fs/super.c:454
 kill_block_super+0x7c/0xe0 fs/super.c:1427
 deactivate_locked_super+0x93/0xf0 fs/super.c:335
 cleanup_mnt+0x418/0x4d0 fs/namespace.c:1148
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8a7a5bc2f7
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc71897a28 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007f8a7a5bc2f7
RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffc71898bd0
RBP: 00007f8a7a63dd7d R08: 000055556da5466b R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000202 R12: 00007ffc71898bd0
R13: 00007f8a7a63dd7d R14: 000055556da314a8 R15: 00007ffc71899ca0
 </TASK>
==================================================================

Crashes (185):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/28 15:31 linux-5.15.y ac56c046adf4 fd2207e7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/12 17:52 linux-5.15.y 3a5928702e71 084d8178 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2023/05/28 20:49 linux-5.15.y 1fe619a7d252 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2025/04/10 10:35 linux-5.15.y 0c935c049b5c 988b336c .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2024/04/21 06:11 linux-5.15.y c52b9710c83d af24b050 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2025/10/28 13:24 linux-5.15.y ac56c046adf4 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2025/10/25 14:08 linux-5.15.y ac56c046adf4 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2025/10/13 04:00 linux-5.15.y 29e53a5b1c4f ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2025/07/22 06:48 linux-5.15.y c79648372d02 1555463b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2025/06/14 06:35 linux-5.15.y 1c700860e8bc 0e8da31f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2025/06/04 03:51 linux-5.15.y 98f47d0e9b8c a30356b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/12/29 17:15 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/12/28 13:28 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/11/05 17:36 linux-5.15.y 72244eab0dad da38b4c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/11/04 22:49 linux-5.15.y 72244eab0dad 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/11/03 18:12 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/11/01 21:51 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/11/01 10:24 linux-5.15.y 72244eab0dad 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/11/01 06:55 linux-5.15.y 72244eab0dad 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/11/01 06:53 linux-5.15.y 72244eab0dad 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/31 06:03 linux-5.15.y 74cdd62cb470 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/30 18:14 linux-5.15.y 74cdd62cb470 fb888278 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/29 19:51 linux-5.15.y 74cdd62cb470 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/29 09:37 linux-5.15.y 74cdd62cb470 66aeb999 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/29 00:49 linux-5.15.y 74cdd62cb470 9efb3cc7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/29 00:46 linux-5.15.y 74cdd62cb470 9efb3cc7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/28 20:28 linux-5.15.y 74cdd62cb470 9efb3cc7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/28 11:57 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/28 10:08 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/27 05:41 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/26 23:19 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/26 23:19 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/26 07:10 linux-5.15.y 74cdd62cb470 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/25 17:42 linux-5.15.y 74cdd62cb470 045e728d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/25 05:59 linux-5.15.y 74cdd62cb470 c79b8ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/24 18:42 linux-5.15.y 74cdd62cb470 0d144d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/24 18:41 linux-5.15.y 74cdd62cb470 0d144d1a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2024/10/23 05:08 linux-5.15.y 74cdd62cb470 15fa2979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan KASAN: user-memory-access Write in __destroy_inode
2025/07/31 04:05 linux-5.15.y c79648372d02 f8f2b4da .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2025/07/31 01:50 linux-5.15.y c79648372d02 f8f2b4da .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2025/07/19 21:17 linux-5.15.y c79648372d02 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2025/05/20 02:07 linux-5.15.y a68c15152131 b84f0537 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2025/05/16 20:56 linux-5.15.y 3b8db0e4f263 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2025/04/21 05:02 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2025/01/19 06:04 linux-5.15.y 4735586da88e f2cb035c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2024/11/11 01:54 linux-5.15.y 3c17fc483905 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2024/11/07 04:46 linux-5.15.y 72244eab0dad df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2024/11/07 04:45 linux-5.15.y 72244eab0dad df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2024/11/03 22:26 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
2024/11/03 14:49 linux-5.15.y 72244eab0dad f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 KASAN: user-memory-access Write in __destroy_inode
* Struck through repros no longer work on HEAD.