BUG: spinlock bad magic in tun_do

Title	Replies (including bot)	Last reply
[PATCH 4.14 000/126] 4.14.71-stable review	137 (137)	2018/11/29 15:07
[PATCH 4.16 000/161] 4.16.12-stable review	171 (171)	2018/05/24 19:47
[PATCH net V2] tun: fix use after free for ptr_ring	6 (6)	2018/05/14 18:48
[PATCH net] tun: fix use after free for ptr_ring	4 (4)	2018/05/11 17:52
BUG: spinlock bad magic in tun_do_read	4 (5)	2018/05/09 03:38

random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) IPVS: ftp: loaded support on port[0] = 21 BUG: spinlock bad magic on CPU#0, syz-executor0/4586 lock: 0xffff8801ae8928c8, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 CPU: 0 PID: 4586 Comm: syz-executor0 Not tainted 4.17.0-rc4+ #62 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 spin_dump+0x160/0x169 kernel/locking/spinlock_debug.c:67 spin_bug kernel/locking/spinlock_debug.c:75 [inline] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] do_raw_spin_lock.cold.3+0x37/0x3c kernel/locking/spinlock_debug.c:112 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0x32/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:310 [inline] ptr_ring_consume include/linux/ptr_ring.h:335 [inline] tun_ring_recv drivers/net/tun.c:2143 [inline] tun_do_read+0x18b1/0x29f0 drivers/net/tun.c:2182 tun_chr_read_iter+0xe5/0x1e0 drivers/net/tun.c:2214 call_read_iter include/linux/fs.h:1778 [inline] new_sync_read fs/read_write.c:406 [inline] __vfs_read+0x696/0xa50 fs/read_write.c:418 vfs_read+0x17f/0x3d0 fs/read_write.c:452 ksys_pread64+0x174/0x1a0 fs/read_write.c:626 __do_compat_sys_x86_pread arch/x86/ia32/sys_ia32.c:177 [inline] __se_compat_sys_x86_pread arch/x86/ia32/sys_ia32.c:174 [inline] __ia32_compat_sys_x86_pread+0xc4/0x130 arch/x86/ia32/sys_ia32.c:174 do_syscall_32_irqs_on arch/x86/entry/common.c:323 [inline] do_fast_syscall_32+0x345/0xf9b arch/x86/entry/common.c:394 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7fc0cb9 RSP: 002b:00000000f7fbc0ac EFLAGS: 00000282 ORIG_RAX: 00000000000000b4 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000080 RDX: 000000000000006e RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000