syzbot

 sign-in | mailing list | source | docs
🐞 Open [858]
🐞 Fixed [89]
🐞 Invalid [1364]
⬇ Missing Backports [132]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

corrupted report

Status: upstream: reported on 2023/03/12 22:30
Reported-by: syzbot+9987a800782441ea44a0@syzkaller.appspotmail.com
First crash: 1207d, last: 2h09m
▶ ▼ Similar bugs (23)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 corrupted report (2) -1 6 1032d 1110d 0/2 auto-obsoleted due to no activity on 2023/12/02 13:09
android-54 corrupted report (2) -1 105976 401d 522d 0/2 auto-obsoleted due to no activity on 2025/07/15 11:08
linux-4.19 corrupted report gfs2 sysv ext4 hfsplus -1 6619 1213d 2639d 0/1 upstream: reported on 2019/04/11 04:14
android-414 corrupted report -1 5888 2404d 2639d 0/1 auto-closed as invalid on 2020/02/29 14:20
android-5-15 corrupted report -1 4 1081d 1163d 0/2 auto-obsoleted due to no activity on 2023/10/14 13:19
android-6-12 corrupted report -1 191 230d 375d 0/1 auto-obsoleted due to no activity on 2026/01/03 01:56
linux-6.6 corrupted report -1 10365 1h03m 380d 0/2 upstream: reported on 2025/06/16 23:08
upstream corrupted report -1 29 3141d 3143d 0/29 closed as invalid on 2017/11/24 12:19
android-54 corrupted report -1 860856 702d 2333d 0/2 auto-obsoleted due to no activity on 2024/10/07 14:17
linux-4.4 corrupted report -1 12 2484d 2612d 0/1 auto-closed as invalid on 2020/01/10 12:28
android-6-12 corrupted report (2) -1 1367 1h11m 161d 0/1 premoderation: reported on 2026/01/21 07:36
linux-4.14 corrupted report cramfs -1 6026 1213d 2637d 0/1 upstream: reported on 2019/04/12 21:21
android-6-1 corrupted report -1 474 17h23m 1072d 0/2 premoderation: reported on 2023/07/25 23:06
android-5-15 corrupted report (3) -1 71 594d 820d 0/2 auto-obsoleted due to no activity on 2025/01/03 14:55
android-5-10 corrupted report -1 289 1512d 1661d 0/2 auto-closed as invalid on 2022/07/11 05:59
android-49 corrupted report -1 567 3141d 3143d 0/3 closed as invalid on 2017/11/24 12:19
android-5-15 corrupted report (4) -1 280 3h08m 536d 0/2 premoderation: reported on 2025/01/11 16:11
android-5-15 corrupted report (2) -1 1 943d 943d 0/2 auto-obsoleted due to no activity on 2024/03/01 04:17
upstream corrupted report (2) prio:low hfs -1 1130844 now 3003d 0/29 moderation: reported on 2018/04/11 09:52
android-49 corrupted report (2) -1 19181 2401d 2635d 0/3 auto-closed as invalid on 2020/03/03 12:39
android-5-10 corrupted report (3) -1 113 2d02h 814d 0/2 premoderation: reported on 2024/04/08 19:56
linux-6.1 corrupted report -1 189928 4h44m 1212d 0/3 upstream: reported on 2023/03/07 17:14
android-44 corrupted report -1 7075 2402d 2635d 0/2 auto-closed as invalid on 2020/03/02 23:26

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 ticks this GP) idle=ec3/1/0x4000000000000002 softirq=20183/20183 fqs=5244 
	(detected by 1, t=10502 jiffies, g=25589, q=4765)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8756 Comm: syz.7.1010 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:native_apic_msr_write+0x14/0x50 arch/x86/include/asm/apic.h:204
Code: 00 0f 1f 44 00 00 b9 0b 08 00 00 31 c0 31 d2 0f 30 c3 0f 1f 40 00 81 ff cf 00 00 00 7f 0c 83 ff 20 74 2a 83 ff 30 74 25 eb 10 <81> ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00
RSP: 0018:ffffc900035cefc8 EFLAGS: 00000016
RAX: ffffffff81340ef0 RBX: ffffffff8be2da20 RCX: 0000000000080000
RDX: ffffc900c0013000 RSI: 00000000000000f6 RDI: 00000000000003f0
RBP: 0000000000000000 R08: ffff8880b9033d77 R09: 1ffff110172067ae
R10: dffffc0000000000 R11: ffffed10172067af R12: 0000000000000000
R13: dffffc0000000001 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fa5243756c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2ce6b24540 CR3: 0000000066da7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 arch_irq_work_raise+0x82/0xd0 arch/x86/kernel/irq_work.c:31
 irq_work_queue_on+0x11e/0x220 kernel/irq_work.c:109
 rcu_read_unlock_special+0x377/0x4a0 kernel/rcu/tree_plugin.h:667
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __perf_event_output kernel/events/core.c:7813 [inline]
 perf_event_output_forward+0x255/0x2e0 kernel/events/core.c:7822
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9515
 perf_tp_event+0x324/0xbe0 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 c2 22 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900035cf760 EFLAGS: 00000206
RAX: ab63439eac6e8300 RBX: 1ffff920006b9ef0 RCX: ab63439eac6e8300
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a79c980
RBP: ffffc900035cf840 R08: ffffffff901cb0cf R09: 1ffffffff2039619
R10: dffffc0000000000 R11: fffffbfff203961a R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 percpu_ref_put_many include/linux/percpu-refcount.h:324 [inline]
 percpu_ref_put+0xcc/0x150 include/linux/percpu-refcount.h:338
 css_put include/linux/cgroup.h:405 [inline]
 obj_cgroup_uncharge_pages mm/memcontrol.c:2998 [inline]
 __memcg_kmem_uncharge_page+0xb7/0x140 mm/memcontrol.c:3083
 memcg_kmem_uncharge_page include/linux/memcontrol.h:1703 [inline]
 free_thread_stack+0x91/0x420 kernel/fork.c:284
 release_task_stack kernel/fork.c:434 [inline]
 put_task_stack+0x97/0x140 kernel/fork.c:445
 finish_task_switch+0x26f/0x650 kernel/sched/core.c:4961
 context_switch kernel/sched/core.c:5052 [inline]
 __schedule+0x11cb/0x4350 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
 __mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 __tun_chr_ioctl+0x3f3/0x1f30 drivers/net/tun.c:3055
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa52611ce59
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:00007fa524375028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa5263a4fa0 RCX: 00007fa52611ce59
RDX: 0000200000000040 RSI: 00000000400454ca RDI: 0000000000000006
RBP: 00007fa5261b2e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa5263a5038 R14: 00007fa5263a4fa0 R15: 00007ffd8f147df8
 </TASK>

Crashes (10143):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/02 04:55 linux-5.15.y eceeec79dbc6 27192279 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/07/02 02:38 linux-5.15.y eceeec79dbc6 27192279 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/07/02 00:45 linux-5.15.y eceeec79dbc6 27192279 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan corrupted report
2026/07/01 16:35 linux-5.15.y eceeec79dbc6 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/07/01 15:22 linux-5.15.y eceeec79dbc6 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/07/01 14:17 linux-5.15.y eceeec79dbc6 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/07/01 11:28 linux-5.15.y eceeec79dbc6 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/07/01 06:09 linux-5.15.y eceeec79dbc6 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/30 23:17 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/30 21:56 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan corrupted report
2026/06/30 20:26 linux-5.15.y eceeec79dbc6 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan corrupted report
2026/06/30 12:46 linux-5.15.y eceeec79dbc6 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/30 11:38 linux-5.15.y eceeec79dbc6 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/30 07:59 linux-5.15.y eceeec79dbc6 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/30 06:55 linux-5.15.y eceeec79dbc6 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/30 00:25 linux-5.15.y eceeec79dbc6 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/29 21:49 linux-5.15.y eceeec79dbc6 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/29 18:50 linux-5.15.y eceeec79dbc6 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/29 13:35 linux-5.15.y eceeec79dbc6 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/29 07:48 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/29 04:27 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/29 00:32 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 23:14 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 20:03 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 18:58 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 17:44 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 15:53 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 14:24 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 10:26 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan corrupted report
2026/06/28 04:43 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/28 03:12 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 21:41 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 20:19 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 18:34 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 11:51 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 10:38 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 07:33 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 05:37 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/27 04:32 linux-5.15.y eceeec79dbc6 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan corrupted report
2026/06/26 12:25 linux-5.15.y eceeec79dbc6 7ff32d8b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/26 06:10 linux-5.15.y eceeec79dbc6 7ff32d8b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/26 04:56 linux-5.15.y eceeec79dbc6 7ff32d8b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/26 01:54 linux-5.15.y eceeec79dbc6 7ff32d8b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2026/06/25 17:38 linux-5.15.y eceeec79dbc6 cfa969bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
2025/08/28 18:10 linux-5.15.y c79648372d02 e12e5ba4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 corrupted report
2023/03/12 22:30 linux-5.15.y bbf9f29bac04 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-perf corrupted report
* Struck through repros no longer work on HEAD.