[ 55.779524][ T84] process_one_work+0x965/0x16a0 [ 55.784476][ T84] ? lock_release+0x800/0x800 [ 55.789183][ T84] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.794561][ T84] ? rwlock_bug.part.0+0x90/0x90 [ 55.799512][ T84] worker_thread+0x96/0xe10 [ 55.804033][ T84] ? process_one_work+0x16a0/0x16a0 [ 55.809243][ T84] kthread+0x388/0x470 [ 55.813331][ T84] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.819067][ T84] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.824802][ T84] ret_from_fork+0x24/0x30 [ 57.147447][ T6795] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6795 [ 57.156889][ T6795] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.162776][ T6795] CPU: 0 PID: 6795 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 57.170985][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.181368][ T6795] Call Trace: [ 57.184643][ T6795] dump_stack+0x188/0x20d [ 57.188976][ T6795] debug_smp_processor_id.cold+0x88/0x9b [ 57.194585][ T6795] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.199684][ T6795] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.205135][ T6795] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.210833][ T6795] ext4_ext_map_blocks+0x2044/0x3410 [ 57.216114][ T6795] ? ext4_ext_release+0x10/0x10 [ 57.220952][ T6795] ? __down_timeout+0x2d0/0x2d0 [ 57.225790][ T6795] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.231244][ T6795] ext4_map_blocks+0x4cb/0x1640 [ 57.236077][ T6795] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.241267][ T6795] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.246803][ T6795] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.252771][ T6795] ? prandom_u32_state+0xe/0x170 [ 57.257687][ T6795] ? __brelse+0x84/0xa0 [ 57.261821][ T6795] ? __ext4_new_inode+0x144/0x57c0 [ 57.266910][ T6795] ext4_getblk+0xad/0x520 [ 57.271217][ T6795] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.276919][ T6795] ? ext4_free_inode+0x17e0/0x17e0 [ 57.282009][ T6795] ext4_bread+0x7c/0x380 [ 57.286243][ T6795] ? ext4_getblk+0x520/0x520 [ 57.290809][ T6795] ? dqget+0xff0/0xff0 [ 57.294858][ T6795] ext4_append+0x153/0x360 [ 57.299274][ T6795] ext4_mkdir+0x5e0/0xdf0 [ 57.303610][ T6795] ? ext4_rmdir+0xde0/0xde0 [ 57.309056][ T6795] ? security_inode_permission+0xc4/0xf0 [ 57.314675][ T6795] vfs_mkdir+0x419/0x690 [ 57.318898][ T6795] do_mkdirat+0x21e/0x280 [ 57.323207][ T6795] ? __ia32_sys_mknod+0xb0/0xb0 [ 57.328050][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.334068][ T6795] ? do_syscall_64+0x21/0x7d0 [ 57.338761][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.344739][ T6795] do_syscall_64+0xf6/0x7d0 [ 57.349320][ T6795] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.355257][ T6795] RIP: 0033:0x7efd503f2687 [ 57.359706][ T6795] Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 [ 57.379302][ T6795] RSP: 002b:00007fff566061d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 57.387726][ T6795] RAX: ffffffffffffffda RBX: 000055d89f55d985 RCX: 00007efd503f2687 [ 57.396491][ T6795] RDX: 00007fff566060a0 RSI: 00000000000001ed RDI: 000055d89f55d985 [ 57.404440][ T6795] RBP: 00007efd503f2680 R08: 0000000000000100 R09: 0000000000000000 [ 57.412388][ T6795] R10: 000055d89f55d980 R11: 0000000000000246 R12: 00000000000001ed [ 57.420335][ T6795] R13: 00007fff56606360 R14: 0000000000000000 R15: 0000000000000000 Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.168' (ECDSA) to the list of known hosts. 2020/06/13 01:17:48 fuzzer started 2020/06/13 01:17:49 connecting to host at 10.128.0.26:36857 2020/06/13 01:17:49 checking machine... 2020/06/13 01:17:49 checking revisions... 2020/06/13 01:17:49 testing simple program... syzkaller login: [ 62.173230][ T6816] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6816 [ 62.182461][ T6816] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.188491][ T6816] CPU: 1 PID: 6816 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 62.196391][ T6816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.206427][ T6816] Call Trace: [ 62.209967][ T6816] dump_stack+0x188/0x20d [ 62.214280][ T6816] debug_smp_processor_id.cold+0x88/0x9b [ 62.219909][ T6816] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.225007][ T6816] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.230441][ T6816] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.236348][ T6816] ext4_ext_map_blocks+0x2044/0x3410 [ 62.241672][ T6816] ? ext4_ext_release+0x10/0x10 [ 62.246519][ T6816] ? __down_timeout+0x2d0/0x2d0 [ 62.251353][ T6816] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.256844][ T6816] ext4_map_blocks+0x4cb/0x1640 [ 62.261694][ T6816] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.266889][ T6816] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.272417][ T6816] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.278373][ T6816] ? prandom_u32_state+0xe/0x170 [ 62.283304][ T6816] ? __brelse+0x84/0xa0 [ 62.287439][ T6816] ? __ext4_new_inode+0x144/0x57c0 [ 62.292528][ T6816] ext4_getblk+0xad/0x520 [ 62.296852][ T6816] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.302551][ T6816] ? ext4_free_inode+0x17e0/0x17e0 [ 62.307644][ T6816] ext4_bread+0x7c/0x380 [ 62.311925][ T6816] ? ext4_getblk+0x520/0x520 [ 62.316495][ T6816] ? dqget+0xff0/0xff0 [ 62.320547][ T6816] ext4_append+0x153/0x360 [ 62.324948][ T6816] ext4_mkdir+0x5e0/0xdf0 [ 62.329408][ T6816] ? ext4_rmdir+0xde0/0xde0 [ 62.333901][ T6816] ? security_inode_permission+0xc4/0xf0 [ 62.339568][ T6816] vfs_mkdir+0x419/0x690 [ 62.343792][ T6816] do_mkdirat+0x21e/0x280 [ 62.348111][ T6816] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.352940][ T6816] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.358940][ T6816] ? do_syscall_64+0x21/0x7d0 [ 62.363593][ T6816] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.369565][ T6816] do_syscall_64+0xf6/0x7d0 [ 62.374052][ T6816] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.379918][ T6816] RIP: 0033:0x4b02a0 [ 62.383787][ T6816] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 62.403381][ T6816] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 62.411768][ T6816] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 62.419714][ T6816] RDX: 00000000000001c0 RSI: 000000c00009cbc0 RDI: ffffffffffffff9c [ 62.427665][ T6816] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 62.436305][ T6816] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 62.444309][ T6816] R13: 000000000000005f R14: 000000000000005e R15: 0000000000000100 [ 62.474158][ T6819] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6819 [ 62.483767][ T6819] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.489760][ T6819] CPU: 0 PID: 6819 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.497999][ T6819] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.508049][ T6819] Call Trace: [ 62.511462][ T6819] dump_stack+0x188/0x20d [ 62.515789][ T6819] debug_smp_processor_id.cold+0x88/0x9b [ 62.521424][ T6819] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.526553][ T6819] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.532100][ T6819] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.537825][ T6819] ext4_ext_map_blocks+0x2044/0x3410 [ 62.543135][ T6819] ? ext4_ext_release+0x10/0x10 [ 62.548003][ T6819] ? __down_timeout+0x2d0/0x2d0 [ 62.552840][ T6819] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.558302][ T6819] ext4_map_blocks+0x4cb/0x1640 [ 62.563131][ T6819] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.568304][ T6819] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.573824][ T6819] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.579778][ T6819] ? prandom_u32_state+0xe/0x170 [ 62.584688][ T6819] ? __brelse+0x84/0xa0 [ 62.588820][ T6819] ? __ext4_new_inode+0x144/0x57c0 [ 62.593908][ T6819] ext4_getblk+0xad/0x520 [ 62.598226][ T6819] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.604009][ T6819] ? ext4_free_inode+0x17e0/0x17e0 [ 62.610495][ T6819] ext4_bread+0x7c/0x380 [ 62.614719][ T6819] ? ext4_getblk+0x520/0x520 [ 62.619304][ T6819] ? dqget+0xff0/0xff0 [ 62.623353][ T6819] ext4_append+0x153/0x360 [ 62.627778][ T6819] ext4_mkdir+0x5e0/0xdf0 [ 62.632120][ T6819] ? ext4_rmdir+0xde0/0xde0 [ 62.637328][ T6819] ? security_inode_permission+0xc4/0xf0 [ 62.642954][ T6819] vfs_mkdir+0x419/0x690 [ 62.647178][ T6819] do_mkdirat+0x21e/0x280 [ 62.651571][ T6819] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.656397][ T6819] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.662369][ T6819] ? do_syscall_64+0x21/0x7d0 [ 62.667082][ T6819] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.673104][ T6819] do_syscall_64+0xf6/0x7d0 [ 62.677636][ T6819] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.683506][ T6819] RIP: 0033:0x45bee7 [ 62.687380][ T6819] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.706960][ T6819] RSP: 002b:00007ffd59b056b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 62.715346][ T6819] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 62.723301][ T6819] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd59b05890 [ 62.731289][ T6819] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003400 [ 62.739262][ T6819] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 62.747247][ T6819] R13: 00007ffd59b05890 R14: 8421084210842109 R15: 00007ffd59b0589c [ 62.823305][ T6821] IPVS: ftp: loaded support on port[0] = 21 [ 62.861342][ T6821] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6821 [ 62.870839][ T6821] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.876786][ T6821] CPU: 1 PID: 6821 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.885033][ T6821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.895065][ T6821] Call Trace: [ 62.898396][ T6821] dump_stack+0x188/0x20d [ 62.902724][ T6821] debug_smp_processor_id.cold+0x88/0x9b [ 62.908342][ T6821] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.913457][ T6821] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.918902][ T6821] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.924609][ T6821] ext4_ext_map_blocks+0x2044/0x3410 [ 62.929892][ T6821] ? ext4_ext_release+0x10/0x10 [ 62.934727][ T6821] ? __down_timeout+0x2d0/0x2d0 [ 62.939558][ T6821] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.945007][ T6821] ext4_map_blocks+0x4cb/0x1640 [ 62.949851][ T6821] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.955035][ T6821] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.960556][ T6821] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.966550][ T6821] ? prandom_u32_state+0xe/0x170 [ 62.971465][ T6821] ? __brelse+0x84/0xa0 [ 62.975597][ T6821] ? __ext4_new_inode+0x144/0x57c0 [ 62.980714][ T6821] ext4_getblk+0xad/0x520 [ 62.985044][ T6821] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.990740][ T6821] ? ext4_free_inode+0x17e0/0x17e0 [ 62.995916][ T6821] ext4_bread+0x7c/0x380 [ 63.000161][ T6821] ? ext4_getblk+0x520/0x520 [ 63.004727][ T6821] ? dqget+0xff0/0xff0 [ 63.008776][ T6821] ext4_append+0x153/0x360 [ 63.014220][ T6821] ext4_mkdir+0x5e0/0xdf0 [ 63.018548][ T6821] ? ext4_rmdir+0xde0/0xde0 [ 63.023151][ T6821] ? security_inode_permission+0xc4/0xf0 [ 63.028769][ T6821] vfs_mkdir+0x419/0x690 [ 63.033008][ T6821] do_mkdirat+0x21e/0x280 [ 63.037332][ T6821] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.042333][ T6821] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.048313][ T6821] ? do_syscall_64+0x21/0x7d0 [ 63.052993][ T6821] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.058956][ T6821] do_syscall_64+0xf6/0x7d0 [ 63.064145][ T6821] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.070041][ T6821] RIP: 0033:0x45bee7 [ 63.073914][ T6821] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 63.093507][ T6821] RSP: 002b:00007ffd59b055a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 63.101907][ T6821] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 63.109860][ T6821] RDX: 00007ffd59b055f3 RSI: 00000000000001ff RDI: 00007ffd59b055f0 [ 63.117812][ T6821] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 63.125874][ T6821] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 63.133860][ T6821] R13: 00007ffd59b055e0 R14: 0000000000000000 R15: 00007ffd59b055f0 [ 63.185159][ T6821] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6821 [ 63.194623][ T6821] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 63.200521][ T6821] CPU: 0 PID: 6821 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 63.208755][ T6821] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.218811][ T6821] Call Trace: [ 63.222196][ T6821] dump_stack+0x188/0x20d [ 63.226539][ T6821] debug_smp_processor_id.cold+0x88/0x9b [ 63.232184][ T6821] ext4_mb_new_blocks+0xa77/0x3b30 [ 63.237344][ T6821] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.242798][ T6821] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.248618][ T6821] ext4_ext_map_blocks+0x2044/0x3410 [ 63.253929][ T6821] ? ext4_ext_release+0x10/0x10 [ 63.258787][ T6821] ? __down_timeout+0x2d0/0x2d0 [ 63.264588][ T6821] ? ext4_es_lookup_extent+0x41d/0xd30 [ 63.270137][ T6821] ext4_map_blocks+0x4cb/0x1640 [ 63.274972][ T6821] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.281292][ T6821] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.287686][ T6821] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.293642][ T6821] ? prandom_u32_state+0xe/0x170 [ 63.298579][ T6821] ? __brelse+0x84/0xa0 [ 63.302722][ T6821] ? __ext4_new_inode+0x144/0x57c0 [ 63.307815][ T6821] ext4_getblk+0xad/0x520 [ 63.312125][ T6821] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 63.317830][ T6821] ? ext4_free_inode+0x17e0/0x17e0 [ 63.322936][ T6821] ext4_bread+0x7c/0x380 [ 63.327173][ T6821] ? ext4_getblk+0x520/0x520 [ 63.331755][ T6821] ? dqget+0xff0/0xff0 [ 63.335838][ T6821] ext4_append+0x153/0x360 [ 63.340510][ T6821] ext4_mkdir+0x5e0/0xdf0 [ 63.344833][ T6821] ? ext4_rmdir+0xde0/0xde0 [ 63.349317][ T6821] ? security_inode_permission+0xc4/0xf0 [ 63.354932][ T6821] vfs_mkdir+0x419/0x690 [ 63.359156][ T6821] do_mkdirat+0x21e/0x280 [ 63.363462][ T6821] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.368292][ T6821] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.374247][ T6821] ? do_syscall_64+0x21/0x7d0 [ 63.379335][ T6821] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.385295][ T6821] do_syscall_64+0xf6/0x7d0 [ 63.389795][ T6821] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.395665][ T6821] RIP: 0033:0x45bee7 [ 63.399537][ T6821] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 63.420247][ T6821] RSP: 002b:00007ffd59b055a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 2020/06/13 01:17:50 building call list... [ 63.428634][ T6821] RAX: ffffffffffffffda RBX: 000000000000f6c6 RCX: 000000000045bee7 [ 63.436584][ T6821] RDX: 00007ffd59b055f3 RSI: 00000000000001ff RDI: 00007ffd59b055f0 [ 63.444545][ T6821] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 63.452497][ T6821] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 63.460485][ T6821] R13: 00007ffd59b055e0 R14: 000000000000f6b2 R15: 00007ffd59b055f0 [ 63.724639][ T6768] tipc: TX() has been purged, node left! [ 64.191581][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 64.200881][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 64.206859][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 64.214738][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.224789][ T1157] Call Trace: [ 64.228086][ T1157] dump_stack+0x188/0x20d [ 64.232439][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 64.238241][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 64.243343][ T1157] ? __kmalloc+0x62f/0x7a0 [ 64.247781][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.253232][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 64.258952][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 64.264239][ T1157] ? ext4_ext_release+0x10/0x10 [ 64.269116][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 64.273962][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 64.279421][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 64.284278][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 64.289502][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 64.294964][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 64.300504][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.306483][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 64.312047][ T1157] ext4_writepages+0x1ab7/0x3400 [ 64.316986][ T1157] ? mark_lock+0x30/0xdd0 [ 64.321324][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 64.326989][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 64.332702][ T1157] ? do_writepages+0xfa/0x2a0 [ 64.337372][ T1157] do_writepages+0xfa/0x2a0 [ 64.341876][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 64.347504][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 64.352532][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 64.357821][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 64.362673][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 64.368386][ T1157] ? collapse_file+0x3575/0x4300 [ 64.373318][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 64.379388][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 64.384668][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.391004][ T1157] collapse_file+0x357f/0x4300 [ 64.395783][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 64.401146][ T1157] ? khugepaged+0x24fa/0x3f80 [ 64.405839][ T1157] khugepaged+0x3049/0x3f80 [ 64.410364][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.415992][ T1157] ? lock_downgrade+0x840/0x840 [ 64.420844][ T1157] ? finish_wait+0x260/0x260 [ 64.425437][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 64.431247][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.437237][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 64.442258][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.447887][ T1157] kthread+0x388/0x470 [ 64.451961][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.457674][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.463414][ T1157] ret_from_fork+0x24/0x30 [ 64.572655][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 64.582538][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 64.588504][ T1157] CPU: 1 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 64.596412][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.606465][ T1157] Call Trace: [ 64.609753][ T1157] dump_stack+0x188/0x20d [ 64.614099][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 64.620803][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 64.625922][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.633040][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 64.639188][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 64.644474][ T1157] ? ext4_ext_release+0x10/0x10 [ 64.649459][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 64.655299][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 64.660850][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 64.665710][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 64.670905][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 64.676368][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 64.682885][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.688874][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 64.694332][ T1157] ext4_writepages+0x1ab7/0x3400 [ 64.699354][ T1157] ? mark_lock+0x30/0xdd0 [ 64.703694][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 64.709367][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 64.714997][ T1157] ? do_writepages+0xfa/0x2a0 [ 64.719671][ T1157] do_writepages+0xfa/0x2a0 [ 64.724170][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 64.729804][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 64.734828][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 64.740020][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 64.744875][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 64.750590][ T1157] ? collapse_file+0x3575/0x4300 [ 64.755531][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 64.761602][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 64.766793][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.772782][ T1157] collapse_file+0x357f/0x4300 [ 64.778166][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 64.783529][ T1157] ? khugepaged+0x24fa/0x3f80 [ 64.788229][ T1157] khugepaged+0x3049/0x3f80 [ 64.793707][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.799357][ T1157] ? lock_downgrade+0x840/0x840 [ 64.804228][ T1157] ? finish_wait+0x260/0x260 [ 64.808818][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 64.814618][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.820614][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 64.825645][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.831306][ T1157] kthread+0x388/0x470 [ 64.835378][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.841091][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.846811][ T1157] ret_from_fork+0x24/0x30 [ 64.903685][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 64.912875][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 64.918870][ T1157] CPU: 1 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 64.926764][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.936825][ T1157] Call Trace: [ 64.940123][ T1157] dump_stack+0x188/0x20d [ 64.944467][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 64.950102][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 64.955236][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.960690][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 64.966871][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 64.972144][ T1157] ? ext4_ext_release+0x10/0x10 [ 64.976993][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 64.981827][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 64.987267][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 64.992111][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 64.997287][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 65.002724][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 65.008246][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 65.014218][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 65.019655][ T1157] ext4_writepages+0x1ab7/0x3400 [ 65.024785][ T1157] ? mark_lock+0x30/0xdd0 [ 65.029100][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 65.034723][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 65.040331][ T1157] ? do_writepages+0xfa/0x2a0 [ 65.044984][ T1157] do_writepages+0xfa/0x2a0 [ 65.049533][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 65.055142][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 65.060145][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 65.065427][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 65.070257][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 65.076043][ T1157] ? collapse_file+0x3575/0x4300 [ 65.080975][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 65.087024][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 65.092371][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.098329][ T1157] collapse_file+0x357f/0x4300 [ 65.103076][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 65.108421][ T1157] ? khugepaged+0x24fa/0x3f80 [ 65.113082][ T1157] khugepaged+0x3049/0x3f80 [ 65.117587][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 65.123193][ T1157] ? lock_downgrade+0x840/0x840 [ 65.128026][ T1157] ? finish_wait+0x260/0x260 [ 65.132590][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 65.138372][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.144330][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 65.149343][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 executing program [ 65.154968][ T1157] kthread+0x388/0x470 [ 65.159013][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.164706][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.170403][ T1157] ret_from_fork+0x24/0x30 [ 65.406418][ T6807] can: request_module (can-proto-0) failed. [ 66.520178][ T6807] can: request_module (can-proto-0) failed. [ 66.531374][ T6807] can: request_module (can-proto-0) failed.