Re: [syzbot] upstream boot error: BUG: unable to handle kernel NULL pointer dereference in generic_handle_domain_irq
From: Dmitry Vyukov <dvyukov@google.com>
Date: 2023-05-03 08:22:04
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On Tue, 2 May 2023 at 21:13, syzbot [off-list ref] wrote:
Hello, syzbot found the following issue on: HEAD commit: d7b3ffe2d7e4 Merge tag 'backlight-next-6.4' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14a288c4280000 kernel config: https://syzkaller.appspot.com/x/.config?x=124f13edd5df0b0d dashboard link: https://syzkaller.appspot.com/bug?extid=9ccf090539dced888489 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 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9ccf090539dced888489@syzkaller.appspotmail.com
+arm mailing list #syz set subsystems: arm
8<--- cut here --- Unable to handle kernel NULL pointer dereference at virtual address 0000003b when read [0000003b] *pgd=80000080004003, *pmd=00000000 Internal error: Oops: 207 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.3.0-syzkaller #0 Hardware name: ARM-Versatile Express PC is at generic_handle_irq_desc include/linux/irqdesc.h:158 [inline] PC is at handle_irq_desc kernel/irq/irqdesc.c:651 [inline] PC is at generic_handle_domain_irq+0x20/0x40 kernel/irq/irqdesc.c:707 LR is at rcu_read_unlock include/linux/rcupdate.h:805 [inline] LR is at __irq_resolve_mapping+0x54/0x90 kernel/irq/irqdomain.c:973 pc : [<802b8fb8>] lr : [<802c0e00>] psr: a0000193 sp : 82601e78 ip : 82601e58 fp : 82601e84 r10: 00000000 r9 : 8261ae40 r8 : 00000000 r7 : df80a00c r6 : 824aebe0 r5 : df80a000 r4 : 8260cdf4 r3 : ffffffff r2 : 8261ae40 r1 : 0000001b r0 : ffffffff Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84a1e300 DAC: fffffffd Register r0 information: non-paged memory Register r1 information: non-paged memory Register r2 information: non-slab/vmalloc memory Register r3 information: non-paged memory Register r4 information: non-slab/vmalloc memory Register r5 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: 0 PID: 0 Comm: swapper/0 Not tainted 6.3.0-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 : [<8047a1f0>] lr : [<8180165c>] psr: 20000193 sp : 82601d08 ip : 82601cf0 fp : 82601d1c r10: 8261ae40 r9 : 8261c9a4 r8 : 8285041c r7 : 60000193 r6 : 00000006 r5 : df80a000 r4 : 00000207 r3 : 80216638 r2 : 00002003 r1 : 00000000 r0 : 00000001 Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user Control: 30c5387d Table: 84a1e300 DAC: fffffffd --- 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@googlegroups.com. 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 -- You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/00000000000021ca9a05fababd21%40google.com.
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