Hello, syzbot found the following issue on: HEAD commit: 8f5ae30d69d7 Linux 6.17-rc1 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=15232442580000 kernel config: https://syzkaller.appspot.com/x/.config?x=8c5ac3d8b8abfcb dashboard link: https://syzkaller.appspot.com/bug?extid=f65a2014305525a9f816 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14cbaba2580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1157faf0580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/18a2e4bd0c4a/disk-8f5ae30d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3b5395881b25/vmlinux-8f5ae30d.xz kernel image: https://storage.googleapis.com/syzbot-assets/e875f4e3b7ff/Image-8f5ae30d.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f65a2014305525a9f816@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: sleeping function called from invalid context at mm/vmalloc.c:3409 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 6664, name: syz-executor preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 no locks held by syz-executor/6664. Preemption disabled at: [<ffff80008b015088>] __schedule_loop kernel/sched/core.c:7042 [inline] [<ffff80008b015088>] schedule+0xac/0x230 kernel/sched/core.c:7058 CPU: 0 UID: 0 PID: 6664 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 __might_resched+0x348/0x4c4 kernel/sched/core.c:8957 __might_sleep+0x94/0x110 kernel/sched/core.c:8886 vfree+0xa0/0x3dc mm/vmalloc.c:3409 kvfree+0x24/0x40 mm/slub.c:5093 futex_hash_free+0x84/0x9c kernel/futex/core.c:1742 __mmdrop+0x2c0/0x4ec kernel/fork.c:692 mmdrop include/linux/sched/mm.h:55 [inline] mmdrop_sched include/linux/sched/mm.h:83 [inline] mmdrop_lazy_tlb_sched include/linux/sched/mm.h:110 [inline] finish_task_switch+0x4a0/0x5a4 kernel/sched/core.c:5250 context_switch kernel/sched/core.c:5360 [inline] __schedule+0x13b4/0x2864 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0xb4/0x230 kernel/sched/core.c:7058 do_nanosleep+0x174/0x508 kernel/time/hrtimer.c:2100 hrtimer_nanosleep+0x154/0x2a4 kernel/time/hrtimer.c:2147 common_nsleep+0xa0/0xb8 kernel/time/posix-timers.c:1353 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1399 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1376 [inline] __arm64_sys_clock_nanosleep+0x328/0x364 kernel/time/posix-timers.c:1376 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
