syzbot


corrupted report

Status: upstream: reported on 2025/06/16 23:08
Reported-by: syzbot+23c24474b429f7ab37e7@syzkaller.appspotmail.com
First crash: 379d, last: 8m
Similar bugs (23)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 corrupted report (2) -1 6 1031d 1109d 0/2 auto-obsoleted due to no activity on 2023/12/02 13:09
android-54 corrupted report (2) -1 105976 400d 521d 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 1212d 2638d 0/1 upstream: reported on 2019/04/11 04:14
android-414 corrupted report -1 5888 2403d 2638d 0/1 auto-closed as invalid on 2020/02/29 14:20
android-5-15 corrupted report -1 4 1080d 1162d 0/2 auto-obsoleted due to no activity on 2023/10/14 13:19
android-6-12 corrupted report -1 191 229d 374d 0/1 auto-obsoleted due to no activity on 2026/01/03 01:56
upstream corrupted report -1 29 3140d 3142d 0/29 closed as invalid on 2017/11/24 12:19
android-54 corrupted report -1 860856 701d 2332d 0/2 auto-obsoleted due to no activity on 2024/10/07 14:17
linux-4.4 corrupted report -1 12 2483d 2611d 0/1 auto-closed as invalid on 2020/01/10 12:28
android-6-12 corrupted report (2) -1 1361 15h51m 161d 0/1 premoderation: reported on 2026/01/21 07:36
linux-4.14 corrupted report cramfs -1 6026 1212d 2636d 0/1 upstream: reported on 2019/04/12 21:21
android-6-1 corrupted report -1 473 52m 1071d 0/2 premoderation: reported on 2023/07/25 23:06
android-5-15 corrupted report (3) -1 71 593d 819d 0/2 auto-obsoleted due to no activity on 2025/01/03 14:55
android-5-10 corrupted report -1 289 1511d 1660d 0/2 auto-closed as invalid on 2022/07/11 05:59
android-49 corrupted report -1 567 3140d 3142d 0/3 closed as invalid on 2017/11/24 12:19
android-5-15 corrupted report (4) -1 277 11h04m 535d 0/2 premoderation: reported on 2025/01/11 16:11
android-5-15 corrupted report (2) -1 1 942d 942d 0/2 auto-obsoleted due to no activity on 2024/03/01 04:17
upstream corrupted report (2) prio:low hfs -1 1130526 10m 3002d 0/29 moderation: reported on 2018/04/11 09:52
linux-5.15 corrupted report -1 10131 3h11m 1206d 0/3 upstream: reported on 2023/03/12 22:30
android-49 corrupted report (2) -1 19181 2400d 2634d 0/3 auto-closed as invalid on 2020/03/03 12:39
android-5-10 corrupted report (3) -1 113 1d05h 813d 0/2 premoderation: reported on 2024/04/08 19:56
linux-6.1 corrupted report -1 189911 10m 1211d 0/3 upstream: reported on 2023/03/07 17:14
android-44 corrupted report -1 7075 2401d 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: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P29246/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=223929, q=168 ncpus=2)
task:syz.7.6392      state:R  running task     stack:27048 pid:29246 ppid:25991  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6700
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 zap_pte_range mm/memory.c:1523 [inline]
 zap_pmd_range mm/memory.c:1571 [inline]
 zap_pud_range mm/memory.c:1600 [inline]
 zap_p4d_range mm/memory.c:1621 [inline]
 unmap_page_range+0x2577/0x32f0 mm/memory.c:1642
 unmap_vmas+0x286/0x3f0 mm/memory.c:1732
 exit_mmap+0x238/0xb90 mm/mmap.c:3302
 __mmput+0x118/0x3a0 kernel/fork.c:1357
 exit_mm+0x23f/0x340 kernel/exit.c:570
 do_exit+0x909/0x2530 kernel/exit.c:871
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1026
 get_signal+0x12a6/0x1390 kernel/signal.c:2903
 arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 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: 0033:0x7fee0055e68e
RSP: 002b:00007ffe53f7c2a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 0000555574231500 RCX: 00007fee0055e68e
RDX: 00007ffe53f7c300 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fee00827da0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000022b55c
R13: 00007fee0082609c R14: 000000000022a9d6 R15: 00007fee00826090
 </TASK>
rcu: rcu_preempt kthread starved for 10332 jiffies! g223929 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:25992 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6700
 schedule+0xbd/0x170 kernel/sched/core.c:6774
 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x30d/0x1590 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:pv_native_safe_halt+0xf/0x10 arch/x86/kernel/paravirt.c:148
Code: dc 23 02 c3 cc cc cc cc cc cc cc f3 0f 1e fa 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 66 90 0f 00 2d 43 67 44 00 fb f4 <c3> 66 0f 1f 00 55 41 57 41 56 41 54 53 50 8b 2f eb 2c 89 cb 80 f9
RSP: 0018:ffffc90000187de0 EFLAGS: 000002c6
RAX: 00169d374d4aae00 RBX: ffffffff81628c14 RCX: 00169d374d4aae00
RDX: 0000000000000001 RSI: ffffffff8acacb60 RDI: ffffffff8b1c7be0
RBP: ffffc90000187f20 R08: ffff8880b8f36bab R09: 1ffff110171e6d75
R10: dffffc0000000000 R11: ffffed10171e6d76 R12: 1ffff92000030fc8
R13: dffffc0000000000 R14: 1ffff1100384c780 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32c22ff8 CR3: 0000000042fbf000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:108 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:753
 default_idle_call+0x6c/0xa0 kernel/sched/idle.c:97
 cpuidle_idle_call kernel/sched/idle.c:178 [inline]
 do_idle+0x334/0x5c0 kernel/sched/idle.c:302
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:401
 start_secondary+0xee/0xf0 arch/x86/kernel/smpboot.c:323
 secondary_startup_64_no_verify+0x179/0x17b
 </TASK>

Crashes (10325):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/01 09:13 linux-6.6.y d1cfde2d5d15 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/07/01 08:03 linux-6.6.y d1cfde2d5d15 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/07/01 05:55 linux-6.6.y d1cfde2d5d15 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/07/01 05:27 linux-6.6.y d1cfde2d5d15 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/07/01 03:19 linux-6.6.y d1cfde2d5d15 00a5cf1c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/07/01 01:46 linux-6.6.y d1cfde2d5d15 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/06/30 20:08 linux-6.6.y d1cfde2d5d15 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 17:38 linux-6.6.y d1cfde2d5d15 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 16:55 linux-6.6.y d1cfde2d5d15 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/06/30 14:43 linux-6.6.y d1cfde2d5d15 00e8b0fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 13:25 linux-6.6.y d1cfde2d5d15 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 11:51 linux-6.6.y d1cfde2d5d15 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 11:45 linux-6.6.y d1cfde2d5d15 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 07:01 linux-6.6.y d1cfde2d5d15 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 05:23 linux-6.6.y d1cfde2d5d15 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/30 03:10 linux-6.6.y d1cfde2d5d15 fff8d0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 22:51 linux-6.6.y d1cfde2d5d15 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 21:00 linux-6.6.y d1cfde2d5d15 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 17:41 linux-6.6.y d1cfde2d5d15 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 14:29 linux-6.6.y d1cfde2d5d15 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 12:37 linux-6.6.y d1cfde2d5d15 6a0c72dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 08:33 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 07:29 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 05:58 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 05:28 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/29 02:55 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 23:17 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/06/28 20:52 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 18:38 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/06/28 16:40 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 12:53 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 10:08 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 07:39 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 05:06 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 04:25 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/28 01:49 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/27 23:43 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/06/27 21:50 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/27 20:48 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/27 18:15 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/27 09:20 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/06/27 06:34 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan-perf corrupted report
2026/06/27 01:07 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/26 23:14 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2026/06/26 19:16 linux-6.6.y d1cfde2d5d15 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
2025/06/16 23:08 linux-6.6.y c2603c511feb d1716036 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan corrupted report
* Struck through repros no longer work on HEAD.