kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8540 Comm: syz-executor.4 Not tainted 5.2.0+ #40 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:send_hsr_supervision_frame+0x38/0xf20 net/hsr/hsr_device.c:255 Code: 89 fd 41 54 53 48 83 ec 50 89 75 bc e8 11 07 54 fa 49 8d 45 10 48 89 c2 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 0c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffff8880ae909c58 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871d8677 RDX: 0000000000000002 RSI: ffffffff871d732f RDI: 0000000000000000 RBP: ffff8880ae909cd0 R08: ffff888087eb26c0 R09: ffffed1015d26c84 R10: ffffed1015d26c83 R11: ffff8880ae93641b R12: ffff888074417340 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000555556df1940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000006ce50000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_announce+0x12f/0x3b0 net/hsr/hsr_device.c:339 call_timer_fn+0x193/0x720 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers kernel/time/timer.c:1685 [inline] __run_timers kernel/time/timer.c:1653 [inline] run_timer_softirq+0x66f/0x1740 kernel/time/timer.c:1698 __do_softirq+0x25e/0x913 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:537 [inline] smp_apic_timer_interrupt+0x171/0x5a0 arch/x86/kernel/apic/apic.c:1095 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:828 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:68 [inline] RIP: 0010:write_comp_data+0x9/0x70 kernel/kcov.c:123 Code: 12 00 00 8b 80 f4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 c0 fd 01 00 <65> 8b 05 e8 82 90 7e a9 00 01 1f 00 75 51 41 8b 80 f0 12 00 00 83 RSP: 0018:ffff88806ce76f00 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff819455c5 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffff88806ce76f08 R08: ffff888087eb26c0 R09: ffff888087eb2f48 R10: ffffed1015d26c83 R11: ffff8880ae93641b R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88806ce77220 in_reclaim_compaction mm/vmscan.c:2523 [inline] should_continue_reclaim mm/vmscan.c:2548 [inline] shrink_node+0xa85/0x1680 mm/vmscan.c:2765 shrink_zones mm/vmscan.c:2895 [inline] do_try_to_free_pages+0x3cb/0x11e0 mm/vmscan.c:2953 try_to_free_mem_cgroup_pages+0x2dd/0x9f0 mm/vmscan.c:3249 try_charge+0x5b9/0x1410 mm/memcontrol.c:2334 __memcg_kmem_charge_memcg+0x7c/0x130 mm/memcontrol.c:2691 memcg_kmem_charge_memcg include/linux/memcontrol.h:1314 [inline] memcg_charge_slab mm/slab.h:282 [inline] kmem_getpages mm/slab.c:1379 [inline] cache_grow_begin+0x402/0x650 mm/slab.c:2606 fallback_alloc+0x1fd/0x2d0 mm/slab.c:3153 ____cache_alloc_node+0x1be/0x1e0 mm/slab.c:3221 __do_cache_alloc mm/slab.c:3290 [inline] slab_alloc mm/slab.c:3318 [inline] kmem_cache_alloc+0x1e8/0x6f0 mm/slab.c:3488 ext4_alloc_inode+0x1f/0x640 fs/ext4/super.c:1073 alloc_inode+0x68/0x1e0 fs/inode.c:227 iget_locked+0x196/0x4a0 fs/inode.c:1181 __ext4_iget+0x273/0x3f10 fs/ext4/inode.c:4866 ext4_lookup fs/ext4/namei.c:1700 [inline] ext4_lookup+0x3b1/0x7a0 fs/ext4/namei.c:1675 __lookup_slow+0x279/0x500 fs/namei.c:1669 lookup_slow+0x58/0x80 fs/namei.c:1686 mountpoint_last fs/namei.c:2663 [inline] path_mountpoint+0x5d2/0x1e60 fs/namei.c:2693 filename_mountpoint+0x190/0x3c0 fs/namei.c:2715 user_path_mountpoint_at+0x3a/0x50 fs/namei.c:2745 ksys_umount+0x167/0xf00 fs/namespace.c:1688 __do_sys_umount fs/namespace.c:1714 [inline] __se_sys_umount fs/namespace.c:1712 [inline] __x64_sys_umount+0x54/0x80 fs/namespace.c:1712 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c247 Code: 64 89 04 25 d0 02 00 00 58 5f ff d0 48 89 c7 e8 2f be ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 9d 8d fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff8bac8be8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 0000000000023f54 RCX: 000000000045c247 RDX: 0000000000403470 RSI: 0000000000000002 RDI: 00007fff8bac8c90 RBP: 000000000000004c R08: 0000000000000000 R09: 000000000000000f R10: 000000000000000a R11: 0000000000000206 R12: 00007fff8bac9d20 R13: 0000555556df2940 R14: 0000000000000000 R15: 00007fff8bac9d20 Modules linked in: ---[ end trace 56c33ec42489b889 ]--- RIP: 0010:send_hsr_supervision_frame+0x38/0xf20 net/hsr/hsr_device.c:255 Code: 89 fd 41 54 53 48 83 ec 50 89 75 bc e8 11 07 54 fa 49 8d 45 10 48 89 c2 48 89 45 d0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 0c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffff8880ae909c58 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871d8677 RDX: 0000000000000002 RSI: ffffffff871d732f RDI: 0000000000000000 RBP: ffff8880ae909cd0 R08: ffff888087eb26c0 R09: ffffed1015d26c84 R10: ffffed1015d26c83 R11: ffff8880ae93641b R12: ffff888074417340 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000555556df1940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000006ce50000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400