BUG: spinlock bad magic on CPU#1, kworker/u4:1/12396 lock: 0xffff88800012c7f8, .magic: 00000000, .owner: /-1, .owner_cpu: -1 CPU: 1 PID: 12396 Comm: kworker/u4:1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_tt_purge Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] do_raw_spin_lock+0x19f/0x220 kernel/locking/spinlock_debug.c:112 spin_lock_bh include/linux/spinlock.h:334 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2521 [inline] batadv_tt_purge+0x123/0xa00 net/batman-adv/translation-table.c:3812 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 audit: type=1800 audit(1642049700.464:736): pid=20253 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14165 res=0 audit: type=1800 audit(1642049700.964:737): pid=20300 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14784 res=0 audit: type=1800 audit(1642049701.914:738): pid=20456 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=14165 res=0 ------------[ cut here ]------------ kernel BUG at arch/x86/mm/physaddr.c:27! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 20710 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:27 Code: 67 fb 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 40 28 37 00 48 85 db 75 0d e8 a6 26 37 00 4c 89 e0 5b 5d 41 5c c3 e8 99 26 37 00 <0f> 0b e8 92 26 37 00 48 c7 c0 10 30 e7 89 48 ba 00 00 00 00 00 fc RSP: 0018:ffff888040b2faf8 EFLAGS: 00010293 RAX: ffff88801e156240 RBX: 0000077007700077 RCX: ffffffff812b5e78 RDX: 0000000000000000 RSI: ffffffff812b5ed7 RDI: 0000000000000006 RBP: 0000077087700077 R08: 0000000000000000 R09: 0000077087700077 R10: 0000000000000006 R11: 0000000000000009 R12: 00007ef007700077 R13: ffff888040b2fb50 R14: 0000000000000000 R15: 0000000000000286 FS: 00007fb353f208c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd559c0957 CR3: 00000000251e2000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virt_to_head_page include/linux/mm.h:665 [inline] qlink_to_cache mm/kasan/quarantine.c:127 [inline] qlist_free_all+0xbb/0x140 mm/kasan/quarantine.c:163 quarantine_reduce+0x1a9/0x230 mm/kasan/quarantine.c:259 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:538 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc+0x110/0x370 mm/slab.c:3557 getname_flags+0xce/0x590 fs/namei.c:140 do_sys_open+0x26c/0x520 fs/open.c:1079 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb353066840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffd559c2ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000563ccc9ad520 RCX: 00007fb353066840 RDX: 0000563ccc36bfe3 RSI: 00000000000a0800 RDI: 0000563ccc9bf7c0 RBP: 00007ffd559c2c60 R08: 0000563ccc36b670 R09: 0000000000000010 R10: 0000563ccc36bd0c R11: 0000000000000246 R12: 00007ffd559c2bb0 R13: 0000563ccc9beab0 R14: 0000000000000003 R15: 000000000000000e Modules linked in: ---[ end trace b5630a1edfbaad0c ]--- RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:27 Code: 67 fb 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 40 28 37 00 48 85 db 75 0d e8 a6 26 37 00 4c 89 e0 5b 5d 41 5c c3 e8 99 26 37 00 <0f> 0b e8 92 26 37 00 48 c7 c0 10 30 e7 89 48 ba 00 00 00 00 00 fc RSP: 0018:ffff888040b2faf8 EFLAGS: 00010293 RAX: ffff88801e156240 RBX: 0000077007700077 RCX: ffffffff812b5e78 RDX: 0000000000000000 RSI: ffffffff812b5ed7 RDI: 0000000000000006 RBP: 0000077087700077 R08: 0000000000000000 R09: 0000077087700077 R10: 0000000000000006 R11: 0000000000000009 R12: 00007ef007700077 R13: ffff888040b2fb50 R14: 0000000000000000 R15: 0000000000000286 FS: 00007fb353f208c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd559c0957 CR3: 00000000251e2000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400