7 16:15:50 syzkaller kern.warn kernel: [ 519.256357][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71 May 17 16:15:50 syzkaller kern.err kernel: [ 519.266645[ 520.006480][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 ][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII acceMay 17 16:15:50 syzkaller kern.iMay 17 16:15:50 syzkaller kern.iMay 17 16:15:50 May 17 16:15:50 May 17 16:15:50 s[ 520.036297][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71 yzkaller kern.warn kernel: [ 519.376302][ T917] asix 7-1:0.0 ([ 520.051838][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access unnamed net_devi[ 520.062649][ T3369] ================================================================== ce) (uninitializ[ 520.072371][ T3369] BUG: KASAN: null-ptr-deref in atomic_read include/asm-generic/atomic-instrumented.h:26 [inline] ce) (uninitializ[ 520.072371][ T3369] BUG: KASAN: null-ptr-deref in __tcf_idr_release net/sched/act_api.c:162 [inline] ce) (uninitializ[ 520.072371][ T3369] BUG: KASAN: null-ptr-deref in tcf_idrinfo_destroy+0xb9/0x220 net/sched/act_api.c:561 ed): Failed to r[ 520.072510][ T3369] kasan_report+0x30/0x60 mm/kasan/common.c:653 ead reg index 0x[ 520.072610][ T3369] ? read_word_at_a_time+0x12/0x20 include/linux/compiler.h:349 0000: -71 May 1[ 520.227260][ T3369] process_one_work+0x73b/0xcc0 kernel/workqueue.c:2290 7 16:15:50 syzka[ 520.227276][ T3369] worker_thread+0xa5c/0x13b0 kernel/workqueue.c:2436 ller kern.warn k[ 520.227289][ T3369] ? atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:694 [inline] ller kern.warn k[ 520.227289][ T3369] ? queued_spin_lock include/asm-generic/qspinlock.h:78 [inline] ller kern.warn k[ 520.227289][ T3369] ? do_raw_spin_lock_flags include/linux/spinlock.h:193 [inline] ller kern.warn k[ 520.227289][ T3369] ? __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline] ller kern.warn k[ 520.227289][ T3369] ? _raw_spin_lock_irqsave+0xb0/0x110 kernel/locking/spinlock.c:159 ernel: [ 519.40[ 520.227302][ T3369] kthread+0x31e/0x3a0 kernel/kthread.c:288 6289][ T917] as[ 520.227310][ T3369] ? worker_clr_flags+0x190/0x190 ix 7-1:0.0 (unna[ 520.227335][ T3369] ================================================================== (uninitialized):[ 520.228228][ T3369] kasan: CONFIG_KASAN_INLINE enabled Failed to writM[ 520.256274][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to read reg index 0x0000: -71 ay 17 16:15:50 s[ 520.268165][ T3369] kasan: GPF could be caused by NULL-ptr deref or user memory access yzkaller kern.wa[ 520.563319][ T3369] ---[ end trace 941a0077fa8e89e3 ]--- rn kernel: [ 51[ 520.570257][ T3369] RIP: 0010:__read_once_size include/linux/compiler.h:268 [inline] rn kernel: [ 51[ 520.570257][ T3369] RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:31 [inline] rn kernel: [ 51[ 520.570257][ T3369] RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:27 [inline] rn kernel: [ 51[ 520.570257][ T3369] RIP: 0010:__tcf_idr_release net/sched/act_api.c:162 [inline] rn kernel: [ 51[ 520.570257][ T3369] RIP: 0010:tcf_idrinfo_destroy+0xc0/0x220 net/sched/act_api.c:561 9.449524][ T917[ 520.587807][ T3369] Code: 40 e8 b4 6b af 00 48 85 c0 0f 84 1a 01 00 00 49 89 c4 4c 8d 68 20 4c 89 ef be 04 00 00 00 e8 37 05 1b fe 4c 89 e8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 ba 00 00 00 45 8b 6d 00 31 ff 44 89 ee ] asix 7-1:0.0 ([ 520.587816][ T3369] RSP: 0018:ffff8881ec6afb60 EFLAGS: 00010202 unnamed net_devi[ 520.587833][ T3369] RAX: 0000000000000002 RBX: ffff8881e516a320 RCX: ffff8881dee5cec0 ce) (uninitializ[ 520.625780][ T3369] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff ed): Failed to r[ 520.625786][ T3369] RBP: ffff8881ec6afc08 R08: 0000000000000004 R09: 0000000000000003 ead reg index 0x[ 520.625799][ T3369] R13: 0000000000000010 R14: ffffffff861b59f0 R15: dffffc0000000000 0000: -71 May 1[ 520.625807][ T3369] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 7 16:15:51 syzka[ 520.625820][ T3369] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 ller kern.warn k[ 520.635189][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -71 ernel: [ 519.47[ 520.653564][ T3369] CR2: 0000559e2357feb0 CR3: 00000001ec8b8000 CR4: 00000000003406a0 6327][ T917] as[ 520.681845][ T917] asix 7-1:0.0 (unnamed net_device) (uninitialized): Failed to enable software MII access ix 7-1:0.0 (unna[ 520.693119][ T3369] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 med net_device) [ 520.722886][ T3369] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400