netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access BUG: spinlock bad magic on CPU#1, syz-executor5/4708 general protection fault: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 4699 Comm: syz-executor0 Not tainted 4.9.75-g5f5e5d4 #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8801cf573000 task.stack: ffff8801bea58000 RIP: 0010:[] [] __read_once_size include/linux/compiler.h:243 [inline] RIP: 0010:[] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] RIP: 0010:[] [] page_ref_count include/linux/page_ref.h:66 [inline] RIP: 0010:[] [] put_page_testzero include/linux/mm.h:450 [inline] RIP: 0010:[] [] __free_pages+0x21/0x80 mm/page_alloc.c:3903 RSP: 0018:ffff8801bea5f9b0 EFLAGS: 00010a07 RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266631b RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c RBP: ffff8801bea5f9c0 R08: 0000000048000000 R09: 0000000000001e30 R10: 0000000000002100 R11: ffff8801cf573000 R12: 0000000000000004 R13: 0000000000000020 R14: ffff8801cf498000 R15: dffffc0000000000 FS: 00007f9dc6fba700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff96d4ae7c CR3: 00000001d05d4000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 0000000000000001 ffff8801cf498158 ffff8801bea5fa20 ffffffff82666341 ffff8801cf498170 ffffed0039e9302b ffffed0039e9302e ffff8801cf498168 dead4ead00000000 ffff8801cf498140 0000000000000000 0000000000000000 Call Trace: [] sg_remove_scat.isra.19+0x1c1/0x2d0 drivers/scsi/sg.c:1954 [] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836 [] sg_new_read.isra.20+0x18d/0x3e0 drivers/scsi/sg.c:567 [] sg_read+0x8bd/0x1440 drivers/scsi/sg.c:456 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] entry_SYSCALL_64_fastpath+0x23/0xe2 Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d RIP [] __read_once_size include/linux/compiler.h:243 [inline] RIP [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] RIP [] page_ref_count include/linux/page_ref.h:66 [inline] RIP [] put_page_testzero include/linux/mm.h:450 [inline] RIP [] __free_pages+0x21/0x80 mm/page_alloc.c:3903 RSP ---[ end trace 55ada372622301c6 ]--- Kernel panic - not syncing: Fatal exception lock: 0xffff8801cf550018, .magic: dead4eac, .owner: /-1, .owner_cpu: -1 CPU: 1 PID: 4708 Comm: syz-executor5 Tainted: G D 4.9.75-g5f5e5d4 #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801be9b7208 ffffffff81d93049 ffff8801cf550018 ffff8801bea16000 0000000000000001 0000000000000001 0000000000000000 ffff8801be9b7248 ffffffff812476ed ffffffff81222a2e 0000000000000000 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] spin_dump+0x14d/0x280 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+0x174/0x1e0 kernel/locking/spinlock_debug.c:112 [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline] [] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159 [] __wake_up+0x1e/0x50 kernel/sched/wait.c:94 [] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1386 [] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:331 [] scsi_end_request+0x135/0x5c0 drivers/scsi/scsi_lib.c:627 [] scsi_io_completion+0x15de/0x1730 drivers/scsi/scsi_lib.c:829 [] scsi_finish_command+0x3b8/0x530 drivers/scsi/scsi.c:607 [] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1567 [] blk_mq_ipi_complete_request block/blk-mq.c:376 [inline] [] __blk_mq_complete_request+0x205/0x4b0 block/blk-mq.c:388 [] blk_mq_complete_request+0x65/0x80 block/blk-mq.c:407 [] scsi_mq_done+0xce/0x320 drivers/scsi/scsi_lib.c:1877 [] scsi_dispatch_cmd+0x2b1/0x990 drivers/scsi/scsi_lib.c:1648 [] scsi_queue_rq+0x1170/0x19f0 drivers/scsi/scsi_lib.c:1924 [] __blk_mq_run_hw_queue+0x854/0xe30 block/blk-mq.c:826 [] blk_mq_run_hw_queue+0x13e/0x1c0 block/blk-mq.c:911 [] blk_mq_insert_request+0x240/0x5c0 block/blk-mq.c:1053 [] blk_execute_rq_nowait+0x12c/0x320 block/blk-exec.c:68 [] sg_common_write.isra.23+0xcb3/0x18d0 drivers/scsi/sg.c:806 [] sg_write+0x6b8/0xb30 drivers/scsi/sg.c:680 [] __vfs_write+0x103/0x680 fs/read_write.c:510 [] vfs_write+0x189/0x530 fs/read_write.c:560 [] SYSC_write fs/read_write.c:607 [inline] [] SyS_write+0xd9/0x1b0 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x23/0xe2 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..