BUG: unable to handle page fault for address: ffffffffffffffc8 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 7426067 P4D 7426067 PUD 7428067 PMD 0 Oops: 0000 [#1] SMP KASAN CPU: 1 PID: 2664 Comm: systemd-udevd Tainted: G W 5.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ath9k_htc_rxep+0xb5/0x210 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1135 Code: 8b 43 38 48 8d 58 c8 49 39 c4 0f 84 ee 00 00 00 e8 f0 64 37 fe 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 74 06 0f 8e 0a 01 00 00 <44> 0f b6 3b 31 ff 44 89 fe e8 fd 6b 37 fe 45 84 ff 75 a8 e8 c3 64 RSP: 0018:ffffc900001489b8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffffffffc8 RCX: ffffc90005b5a000 RDX: 0000000000040000 RSI: ffffffff830a0050 RDI: ffffc90000148928 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff52000029125 R11: 0000000000000000 R12: ffff88812086b678 R13: ffff88812086b240 R14: ffff88812086b688 R15: ffff888140a02da8 FS: 00007ffb2b9c18c0(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 0000000110ad6000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ath9k_htc_rx_msg+0x2e4/0xb70 drivers/net/wireless/ath/ath9k/htc_hst.c:461 ath9k_hif_usb_reg_in_cb+0x1ac/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:733 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x630 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers.part.0+0x675/0xa10 kernel/time/timer.c:1731 __run_timers kernel/time/timer.c:1712 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1744 __do_softirq+0x1b0/0x910 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x117/0x160 kernel/softirq.c:636 irq_exit_rcu+0x5/0x10 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x6a/0x90 arch/x86/kernel/apic/apic.c:1100 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:call_rcu+0x310/0x800 kernel/rcu/tree.c:3110 Code: 49 03 87 10 01 00 00 49 39 c5 0f 8f 59 02 00 00 e8 a5 88 18 00 9c 58 f6 c4 02 0f 85 2e 02 00 00 4d 85 e4 74 01 fb 48 83 c4 20 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 80 3c 02 00 0f 84 cc fe ff ff 4c RSP: 0018:ffffc90000207720 EFLAGS: 00000282 RAX: 0000000000000046 RBX: ffff88810f608220 RCX: 1ffffffff111e05d RDX: 0000000000000000 RSI: ffffffff81477161 RDI: ffffffff812ee86b RBP: ffff8881f69503d0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff81477148 R11: 1ffff92000040e63 R12: 0000000000000200 R13: 0000000000000049 R14: ffff8881f69503a0 R15: ffff8881f69502c0 destroy_inode+0x129/0x1b0 fs/inode.c:288 iput_final fs/inode.c:1660 [inline] iput.part.0+0x4f7/0x810 fs/inode.c:1686 iput+0x58/0x70 fs/inode.c:1676 dentry_unlink_inode+0x2b1/0x3d0 fs/dcache.c:376 __dentry_kill+0x3c0/0x640 fs/dcache.c:582 shrink_dentry_list+0x12f/0x4a0 fs/dcache.c:1176 shrink_dcache_parent+0x205/0x3d0 fs/dcache.c:1603 d_invalidate fs/dcache.c:1712 [inline] d_invalidate+0x13f/0x280 fs/dcache.c:1697 proc_invalidate_siblings_dcache+0x3e9/0x620 fs/proc/inode.c:150 release_task+0xcca/0x17e0 kernel/exit.c:222 wait_task_zombie kernel/exit.c:1107 [inline] wait_consider_task+0x2fc1/0x3ba0 kernel/exit.c:1334 do_wait_thread kernel/exit.c:1397 [inline] do_wait+0x6ca/0xca0 kernel/exit.c:1514 kernel_wait4+0x14c/0x260 kernel/exit.c:1677 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1705 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7ffb2ab07b0a Code: 74 20 00 f7 d8 64 89 02 b8 ff ff ff ff eb d7 90 8b 05 ca b8 20 00 85 c0 75 36 48 63 d2 48 63 ff 45 31 d2 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 8b 15 69 74 20 00 f7 RSP: 002b:00007ffe58309358 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 00007ffe583093b0 RCX: 00007ffb2ab07b0a RDX: 0000000000000001 RSI: 00007ffe58309364 RDI: ffffffffffffffff RBP: 000055b98b9ea010 R08: 0000000000000008 R09: 000055b98b9f0198 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe58309364 R13: 000055b989f3d718 R14: 000055b98b9ff3e0 R15: 0000000000000001 Modules linked in: CR2: ffffffffffffffc8 ---[ end trace 50a0a8630023c24b ]--- RIP: 0010:ath9k_htc_rxep+0xb5/0x210 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c:1135 Code: 8b 43 38 48 8d 58 c8 49 39 c4 0f 84 ee 00 00 00 e8 f0 64 37 fe 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 74 06 0f 8e 0a 01 00 00 <44> 0f b6 3b 31 ff 44 89 fe e8 fd 6b 37 fe 45 84 ff 75 a8 e8 c3 64 RSP: 0018:ffffc900001489b8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffffffffffffffc8 RCX: ffffc90005b5a000 RDX: 0000000000040000 RSI: ffffffff830a0050 RDI: ffffc90000148928 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff52000029125 R11: 0000000000000000 R12: ffff88812086b678 R13: ffff88812086b240 R14: ffff88812086b688 R15: ffff888140a02da8 FS: 00007ffb2b9c18c0(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffc8 CR3: 0000000110ad6000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400