Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 504.357956][ T9912] general protection fault, probably for non-canonical address 0xdffffc0000000030: 0000 [#1] PREEMPT SMP KASAN [ 504.370323][ T9912] KASAN: null-ptr-deref in range [0x0000000000000180-0x0000000000000187] [ 504.378749][ T9912] CPU: 1 PID: 9912 Comm: blkid Not tainted 5.6.0-rc3-next-20200228-syzkaller #0 [ 504.387791][ T9912] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 504.398079][ T9912] RIP: 0010:__queue_work+0xe8/0x1280 executing program [ 504.403351][ T9912] Code: c6 00 bf 97 89 4c 89 e7 e8 15 14 48 02 49 8d 86 80 01 00 00 48 89 c2 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 94 0e 00 00 41 8b 9e 80 01 00 [ 504.422936][ T9912] RSP: 0018:ffffc9000213f078 EFLAGS: 00010006 [ 504.429000][ T9912] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 504.436962][ T9912] RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000001 [ 504.444932][ T9912] RBP: 0000000000000040 R08: ffff8880940da340 R09: fffffbfff1906f66 [ 504.452900][ T9912] R10: fffffbfff1906f65 R11: ffffffff8c837b2b R12: ffff8880a626b418 [ 504.460938][ T9912] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 [ 504.468915][ T9912] FS: 00007f71f03f3740(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 504.477835][ T9912] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 504.484399][ T9912] CR2: 00007f71efc60b10 CR3: 00000000a1a99000 CR4: 00000000001406e0 [ 504.492617][ T9912] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 504.500570][ T9912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 504.508520][ T9912] Call Trace: [ 504.511874][ T9912] ? free_object+0x70/0x70 [ 504.516321][ T9912] ? kmem_cache_alloc_trace+0x390/0x7d0 [ 504.521857][ T9912] queue_work_on+0x18b/0x200 [ 504.526475][ T9912] loop_queue_rq+0x5ac/0x1050 [ 504.531785][ T9912] ? find_held_lock+0x2d/0x110 [ 504.536588][ T9912] blk_mq_dispatch_rq_list+0x997/0x17f0 [ 504.542165][ T9912] ? lock_downgrade+0x701/0x7f0 [ 504.547011][ T9912] ? lock_downgrade+0x7f0/0x7f0 [ 504.551899][ T9912] ? elv_rb_del+0x50/0x90 [ 504.556219][ T9912] ? elv_rqhash_del+0x114/0x160 [ 504.561056][ T9912] ? blk_mq_get_driver_tag+0x540/0x540 [ 504.566572][ T9912] ? _raw_spin_unlock+0x24/0x40 [ 504.571451][ T9912] ? dd_dispatch_request+0x240/0x8b0 [ 504.576762][ T9912] blk_mq_do_dispatch_sched+0x188/0x3f0 [ 504.582296][ T9912] ? blk_mq_sched_free_hctx_data+0x1e0/0x1e0 [ 504.588260][ T9912] ? __lock_acquire+0x827/0x5270 [ 504.593179][ T9912] blk_mq_sched_dispatch_requests+0x3cd/0x650 [ 504.599234][ T9912] ? lock_acquire+0x197/0x420 [ 504.603906][ T9912] ? blk_mq_sched_restart+0x90/0x90 [ 504.609150][ T9912] ? rcu_dynticks_curr_cpu_in_eqs+0x4f/0xb0 [ 504.615045][ T9912] __blk_mq_run_hw_queue+0x1b8/0x2c0 [ 504.620320][ T9912] ? blk_mq_hctx_mark_pending+0x240/0x240 [ 504.626033][ T9912] ? lock_acquire+0x197/0x420 [ 504.630706][ T9912] ? hctx_lock+0x7f/0x1d0 [ 504.635023][ T9912] __blk_mq_delay_run_hw_queue+0x522/0x5e0 [ 504.640818][ T9912] blk_mq_run_hw_queue+0x16c/0x2f0 [ 504.645914][ T9912] ? blk_mq_delay_run_hw_queue+0x30/0x30 [ 504.651530][ T9912] ? dd_dispatch_request+0x8b0/0x8b0 [ 504.656801][ T9912] blk_mq_sched_insert_requests+0x2d4/0x5f0 [ 504.662680][ T9912] blk_mq_flush_plug_list+0x452/0x880 [ 504.668083][ T9912] ? mpage_readpages+0x4c4/0x670 [ 504.673006][ T9912] ? blk_mq_insert_requests+0x640/0x640 [ 504.678542][ T9912] ? do_mpage_readpage+0x1fd0/0x1fd0 [ 504.683814][ T9912] blk_flush_plug_list+0x2ff/0x460 [ 504.688920][ T9912] ? blk_insert_cloned_request+0x500/0x500 [ 504.694768][ T9912] ? put_pages_list+0x16/0x400 [ 504.699527][ T9912] blk_finish_plug+0x50/0x97 [ 504.704113][ T9912] ? blkdev_write_begin+0x40/0x40 [ 504.709169][ T9912] read_pages+0x125/0x610 [ 504.713494][ T9912] ? read_cache_pages+0x750/0x750 [ 504.718505][ T9912] ? 0xffffffff81000000 [ 504.722771][ T9912] ? __page_cache_alloc+0x110/0x480 [ 504.727958][ T9912] __do_page_cache_readahead+0x47c/0x570 [ 504.733584][ T9912] ? read_pages+0x610/0x610 [ 504.738075][ T9912] ? lock_downgrade+0x7f0/0x7f0 [ 504.742909][ T9912] force_page_cache_readahead+0x1dc/0x320 [ 504.748624][ T9912] page_cache_sync_readahead+0x4b8/0x520 [ 504.754285][ T9912] generic_file_read_iter+0x1650/0x2a40 [ 504.759819][ T9912] ? lock_downgrade+0x7f0/0x7f0 [ 504.764658][ T9912] ? filemap_write_and_wait_range+0x1e0/0x1e0 [ 504.770800][ T9912] ? aa_file_perm+0x5d2/0x14d0 [ 504.775595][ T9912] ? __might_fault+0xef/0x1d0 [ 504.780262][ T9912] ? aa_path_link+0x300/0x300 [ 504.784920][ T9912] ? mark_lock+0xbc/0x1220 [ 504.789331][ T9912] ? __might_fault+0x190/0x1d0 [ 504.794084][ T9912] blkdev_read_iter+0x11b/0x180 [ 504.798984][ T9912] new_sync_read+0x4a2/0x790 [ 504.803560][ T9912] ? vfs_dedupe_file_range+0x750/0x750 [ 504.809044][ T9912] ? security_file_permission+0x8a/0x370 [ 504.814658][ T9912] __vfs_read+0xc9/0x100 [ 504.818883][ T9912] vfs_read+0x1ea/0x430 [ 504.823034][ T9912] ksys_read+0x127/0x250 [ 504.827256][ T9912] ? kernel_write+0x120/0x120 [ 504.831955][ T9912] ? trace_hardirqs_off_caller+0x55/0x230 [ 504.837699][ T9912] do_syscall_64+0xf6/0x790 [ 504.842210][ T9912] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 504.848125][ T9912] RIP: 0033:0x7f71efcfb310 [ 504.852520][ T9912] Code: 73 01 c3 48 8b 0d 28 4b 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d e5 a2 2b 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 6e 8a 01 00 48 89 04 24 [ 504.872109][ T9912] RSP: 002b:00007ffc5a8442c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 504.880520][ T9912] RAX: ffffffffffffffda RBX: 00000000080f0000 RCX: 00007f71efcfb310 [ 504.888474][ T9912] RDX: 0000000000000040 RSI: 0000000000b40c58 RDI: 0000000000000003 [ 504.896443][ T9912] RBP: 0000000000b40c30 R08: 0000000000000068 R09: 0101010101010101 [ 504.904396][ T9912] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000b40030 [ 504.912359][ T9912] R13: 0000000000000040 R14: 0000000000b40080 R15: 0000000000b40c48 [ 504.920479][ T9912] Modules linked in: [ 504.924368][ T9912] ---[ end trace a9ff1e97eb23c6c7 ]--- [ 504.929934][ T9912] RIP: 0010:__queue_work+0xe8/0x1280 [ 504.935219][ T9912] Code: c6 00 bf 97 89 4c 89 e7 e8 15 14 48 02 49 8d 86 80 01 00 00 48 89 c2 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 94 0e 00 00 41 8b 9e 80 01 00 [ 504.954869][ T9912] RSP: 0018:ffffc9000213f078 EFLAGS: 00010006 [ 504.960936][ T9912] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 504.971262][ T9912] RDX: 0000000000000030 RSI: 0000000000000000 RDI: 0000000000000001 [ 504.979336][ T9912] RBP: 0000000000000040 R08: ffff8880940da340 R09: fffffbfff1906f66 [ 504.987315][ T9912] R10: fffffbfff1906f65 R11: ffffffff8c837b2b R12: ffff8880a626b418 [ 504.995336][ T9912] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 [ 505.003305][ T9912] FS: 00007f71f03f3740(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 505.012446][ T9912] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 505.019070][ T9912] CR2: 00007f71efc60b10 CR3: 00000000a1a99000 CR4: 00000000001406e0 [ 505.027026][ T9912] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 505.034991][ T9912] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 505.042951][ T9912] Kernel panic - not syncing: Fatal exception [ 505.050135][ T9912] Kernel Offset: disabled [ 505.054465][ T9912] Rebooting in 86400 seconds..