Hello, syzbot found the following issue on: HEAD commit: 7d2a07b76933 Linux 5.14 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=1153e67d300000 kernel config: https://syzkaller.appspot.com/x/.config?x=f8211b06020972e8 dashboard link: https://syzkaller.appspot.com/bug?extid=fd2f89c6e52024e6118d compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 userspace arch: riscv64 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+fd2f89c6e52024e6118d@xxxxxxxxxxxxxxxxxxxxxxxxx Unable to handle kernel paging request at virtual address 1ffffffff07aa547 Oops [#1] Modules linked in: CPU: 0 PID: 3309 Comm: kworker/0:5 Not tainted 5.14.0-syzkaller #0 Hardware name: riscv-virtio,qemu (DT) Workqueue: events nsim_dev_trap_report_work epc : slab_alloc_node mm/slub.c:2884 [inline] epc : __kmalloc_node_track_caller+0xb0/0x3d2 mm/slub.c:4653 ra : slab_pre_alloc_hook mm/slab.h:494 [inline] ra : slab_alloc_node mm/slub.c:2880 [inline] ra : __kmalloc_node_track_caller+0x70/0x3d2 mm/slub.c:4653 epc : ffffffff803e2a20 ra : ffffffff803e29e0 sp : ffffffe0095c3b20 gp : ffffffff83f967d8 tp : ffffffe00ba397c0 t0 : ffffffe008b544a8 t1 : 0000000000000001 t2 : ffffffffeddd472a s0 : ffffffe0095c3bc0 s1 : ffffffe005602140 a0 : 0000000000000000 a1 : 0000000000000007 a2 : 1ffffffff07aa51f a3 : ffffffff80a9711a a4 : 0000000004000000 a5 : 0000000000000000 a6 : 0000000000f00000 a7 : 78e919c5cf7e2f00 s2 : ffffffff83f96adc s3 : 0000000000082a20 s4 : 0000000000001000 s5 : ffffffffffffffff s6 : ffffffff81538164 s7 : ffffffff83f9a0d0 s8 : 0000000000000000 s9 : 0000000000082a20 s10: 0000000000000000 s11: ffffffe008b545c8 t3 : 78e919c5cf7e2f00 t4 : ffffffc40116a8bb t5 : ffffffc40116a8bc t6 : ffffffe00eede026 status: 0000000000000120 badaddr: 1ffffffff07aa547 cause: 000000000000000f [<ffffffff803e2a20>] slab_alloc_node mm/slub.c:2884 [inline] [<ffffffff803e2a20>] __kmalloc_node_track_caller+0xb0/0x3d2 mm/slub.c:4653 [<ffffffff821a8952>] kmalloc_reserve net/core/skbuff.c:355 [inline] [<ffffffff821a8952>] __alloc_skb+0xee/0x2e2 net/core/skbuff.c:426 [<ffffffff81538164>] alloc_skb include/linux/skbuff.h:1112 [inline] [<ffffffff81538164>] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:664 [inline] [<ffffffff81538164>] nsim_dev_trap_report drivers/net/netdevsim/dev.c:721 [inline] [<ffffffff81538164>] nsim_dev_trap_report_work+0x1cc/0x5e6 drivers/net/netdevsim/dev.c:762 [<ffffffff80063b62>] process_one_work+0x5e0/0xf82 kernel/workqueue.c:2276 [<ffffffff8006485a>] worker_thread+0x356/0x8e6 kernel/workqueue.c:2422 [<ffffffff80076554>] kthread+0x25c/0x2c6 kernel/kthread.c:319 [<ffffffff8000515e>] ret_from_exception+0x0/0x14 ---[ end trace fa569262b4bfae4f ]--- --- 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.
