Hello, syzbot found the following issue on: HEAD commit: ac9a78681b92 Linux 6.4-rc1 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=102a3f6a280000 kernel config: https://syzkaller.appspot.com/x/.config?x=cc86fee67199911d dashboard link: https://syzkaller.appspot.com/bug?extid=afc1d968649e7e851562 compiler: arm-linux-gnueabi-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/c35b5b2731d2/non_bootable_disk-ac9a7868.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c04bec59d77d/vmlinux-ac9a7868.xz kernel image: https://storage.googleapis.com/syzbot-assets/070113b307f3/zImage-ac9a7868.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+afc1d968649e7e851562@xxxxxxxxxxxxxxxxxxxxxxxxx 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 000005f4 when read [000005f4] *pgd=80000080004003, *pmd=00000000 Internal error: Oops: 207 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.4.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express PC is at gic_eoi_irq+0x64/0x70 drivers/irqchip/irq-gic.c:228 LR is at handle_percpu_devid_irq+0xb8/0x2d4 kernel/irq/chip.c:944 pc : [<8087e328>] lr : [<802bf798>] psr: 20000193 sp : df805f60 ip : df805f78 fp : df805f74 r10: 00000000 r9 : 831f4680 r8 : 00000001 r7 : 0000001c r6 : 81b0febc r5 : 000005f0 r4 : 8309a218 r3 : 000005f0 r2 : 0009127a r1 : ddde8b00 r0 : 8309a218 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84804d80 DAC: 00000000 Register r0 information: slab kmalloc-256 start 8309a200 pointer offset 24 size 256 Register r1 information: non-slab/vmalloc memory Register r2 information: 8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 000001ff when read [000001ff] *pgd=80000080004003, *pmd=00000000 Internal error: Oops: 207 [#2] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.4.0-rc1-syzkaller #0 Hardware name: ARM-Versatile Express PC is at __find_vmap_area mm/vmalloc.c:841 [inline] PC is at find_vmap_area mm/vmalloc.c:1862 [inline] PC is at find_vm_area mm/vmalloc.c:2623 [inline] PC is at vmalloc_dump_obj+0x38/0xb4 mm/vmalloc.c:4221 LR is at __raw_spin_lock include/linux/spinlock_api_smp.h:132 [inline] LR is at _raw_spin_lock+0x18/0x58 kernel/locking/spinlock.c:154 pc : [<8047a2ec>] lr : [<81801fd4>] psr: 20000193 sp : df805df0 ip : df805dd8 fp : df805e04 r10: 831f4680 r9 : 8261c9a4 r8 : 8285041c r7 : 60000193 r6 : 00000003 r5 : 00092000 r4 : 00000207 r3 : 830e13a0 r2 : 00001dda r1 : 00000000 r0 : 00000001 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 30c5387d Table: 84804d80 DAC: 00000000 --- 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 bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
