kernel BUG in jffs2_del_ino_cache

Status: upstream: reported C repro on 2026/08/07 19:27
Reported-by: syzbot+ddca880db97c350f4b7a@syzkaller.appspotmail.com
First crash: 21d, last: 6h34m
Bug presence (1)
Date Name Commit Repro Result
2026/08/22 upstream (ToT) 26260251022f C Failed due to an error; will retry later
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in jffs2_del_ino_cache jffs2 -1 syz, C error error 4440 19m 877d 0/29 upstream: reported C repro on 2024/04/03 14:13
linux-5.15 kernel BUG in jffs2_del_ino_cache origin:upstream -1 syz, C error 235 9h39m 877d 0/3 upstream: reported C repro on 2024/04/03 08:31
linux-6.1 kernel BUG in jffs2_del_ino_cache origin:upstream -1 syz, C error 814 12m 877d 0/3 upstream: reported C repro on 2024/04/03 08:31

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/jffs2/nodelist.c:462!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5886 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:jffs2_del_ino_cache+0x2b8/0x2c0 fs/jffs2/nodelist.c:462
Code: 08 ff e9 51 ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 4f fe ff ff 4c 89 e7 e8 72 00 08 ff e9 42 fe ff ff e8 18 7e af fe <0f> 0b 66 0f 1f 44 00 00 66 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90003337a98 EFLAGS: 00010293
RAX: ffffffff82d7f368 RBX: ffff888076573000 RCX: ffff888028aa8000
RDX: 0000000000000000 RSI: ffff888076573000 RDI: ffff88802cbc4000
RBP: 0000000000000006 R08: ffff88802cbc436b R09: 1ffff1100597886d
R10: dffffc0000000000 R11: ffffed100597886e R12: ffff888076573000
R13: dffffc0000000000 R14: ffff888076573020 R15: ffff88802cbc4000
FS:  0000555572729500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3bb670000 CR3: 000000001ffae000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 jffs2_do_clear_inode+0x31f/0x390 fs/jffs2/readinode.c:1443
 evict+0x4b7/0x8a0 fs/inode.c:705
 dispose_list fs/inode.c:738 [inline]
 evict_inodes+0x4b5/0x6e0 fs/inode.c:786
 generic_shutdown_super+0x97/0x2b0 fs/super.c:672
 kill_mtd_super+0x23/0x70 drivers/mtd/mtdsuper.c:174
 jffs2_kill_sb+0x96/0xb0 fs/jffs2/super.c:349
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x3d7/0x460 fs/namespace.c:1259
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe3bb79f317
Code: a2 c7 05 dc 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 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 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe0c11f7f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fe3bb834474 RCX: 00007fe3bb79f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe0c11f8b0
RBP: 00007ffe0c11f8b0 R08: 00007ffe0c1208b0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe0c120940
R13: 00007fe3bb834474 R14: 0000000000019527 R15: 00007ffe0c120980
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:jffs2_del_ino_cache+0x2b8/0x2c0 fs/jffs2/nodelist.c:462
Code: 08 ff e9 51 ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 4f fe ff ff 4c 89 e7 e8 72 00 08 ff e9 42 fe ff ff e8 18 7e af fe <0f> 0b 66 0f 1f 44 00 00 66 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90003337a98 EFLAGS: 00010293
RAX: ffffffff82d7f368 RBX: ffff888076573000 RCX: ffff888028aa8000
RDX: 0000000000000000 RSI: ffff888076573000 RDI: ffff88802cbc4000
RBP: 0000000000000006 R08: ffff88802cbc436b R09: 1ffff1100597886d
R10: dffffc0000000000 R11: ffffed100597886e R12: ffff888076573000
R13: dffffc0000000000 R14: ffff888076573020 R15: ffff88802cbc4000
FS:  0000555572729500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000cda3c04b188 CR3: 000000001ffae000 CR4: 00000000003506e0

Crashes (218):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/08 20:47 linux-6.6.y 6436c12a2ced 5d63f80b .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/29 01:24 linux-6.6.y a4a971135a2f 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/28 22:30 linux-6.6.y a4a971135a2f 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/28 09:52 linux-6.6.y a4a971135a2f e2fa417d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/27 22:39 linux-6.6.y 93e0c9521fa8 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/27 17:27 linux-6.6.y 93e0c9521fa8 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/27 14:54 linux-6.6.y 93e0c9521fa8 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/27 12:07 linux-6.6.y dc6160265ffc 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/26 14:53 linux-6.6.y dc6160265ffc a2b77b9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/26 02:04 linux-6.6.y dc6160265ffc 6a91adb4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/25 00:43 linux-6.6.y dc6160265ffc 614e416a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/24 18:56 linux-6.6.y dc6160265ffc b55bd4c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/24 15:42 linux-6.6.y dc6160265ffc b55bd4c3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/24 08:57 linux-6.6.y dc6160265ffc 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/24 08:46 linux-6.6.y dc6160265ffc 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/24 07:11 linux-6.6.y dc6160265ffc 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/24 00:33 linux-6.6.y dc6160265ffc 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/23 16:22 linux-6.6.y dc6160265ffc 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/22 19:56 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/22 02:29 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/21 21:57 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/21 20:41 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/21 04:23 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/21 04:05 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/20 16:49 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/19 19:14 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/19 19:12 linux-6.6.y c610b395b0a5 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/19 16:14 linux-6.6.y d27334b2888c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/19 14:41 linux-6.6.y d27334b2888c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/18 14:57 linux-6.6.y d27334b2888c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/18 04:18 linux-6.6.y d27334b2888c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/18 00:52 linux-6.6.y d27334b2888c 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/17 20:44 linux-6.6.y d27334b2888c 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/17 13:48 linux-6.6.y d27334b2888c 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/17 12:19 linux-6.6.y d27334b2888c 905244d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/17 01:16 linux-6.6.y d27334b2888c 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/16 11:46 linux-6.6.y d27334b2888c 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/16 01:48 linux-6.6.y d27334b2888c 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/15 22:26 linux-6.6.y d27334b2888c 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/15 05:33 linux-6.6.y d27334b2888c 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/15 04:55 linux-6.6.y d27334b2888c 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/15 01:19 linux-6.6.y d27334b2888c 746171ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/14 12:22 linux-6.6.y d27334b2888c 6f9b3e89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/14 03:57 linux-6.6.y d27334b2888c b13552fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/14 03:57 linux-6.6.y d27334b2888c b13552fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/13 22:08 linux-6.6.y d27334b2888c b13552fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/13 18:39 linux-6.6.y d27334b2888c b13552fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
2026/08/07 19:26 linux-6.6.y 6436c12a2ced e4ef95d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in jffs2_del_ino_cache
* Struck through repros no longer work on HEAD.