[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ 67.718060][ T6728] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6728 [ 67.727799][ T6728] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.733781][ T6728] CPU: 0 PID: 6728 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 67.742418][ T6728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.742424][ T6728] Call Trace: [ 67.742445][ T6728] dump_stack+0x18f/0x20d [ 67.742474][ T6728] debug_smp_processor_id.cold+0x88/0x9b [ 67.765756][ T6728] ext4_mb_new_blocks+0xa4d/0x3b70 [[ 67.770887][ T6728] ? ext4_ext_search_right+0x2ca/0xb20 [ 67.776407][ T6728] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 67.782126][ T6728] ext4_ext_map_blocks+0x201b/0x33e0  OK [0[ 67.787419][ T6728] ? ext4_ext_release+0x10/0x10 [ 67.793659][ T6728] ? down_write_killable+0x170/0x170 [ 67.798941][ T6728] ? ext4_es_lookup_extent+0x41d/0xd10 m] [ 67.804421][ T6728] ext4_map_blocks+0x4cb/0x1640 [ 67.809538][ T6728] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 67.814749][ T6728] ? rcu_read_lock_sched_held+0x9c/0xd0 Started Update U[ 67.820304][ T6728] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.827661][ T6728] ? prandom_u32_state+0xe/0x170 [ 67.832629][ T6728] ? __brelse+0x84/0xa0 [ 67.836832][ T6728] ? __ext4_new_inode+0x144/0x55e0 TMP about System[ 67.841944][ T6728] ext4_getblk+0xad/0x520 [ 67.847801][ T6728] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 67.853702][ T6728] ? ext4_free_inode+0x1700/0x1700 Runlevel Change[ 67.858825][ T6728] ext4_bread+0x7c/0x380 [ 67.864452][ T6728] ? ext4_getblk+0x520/0x520 [ 67.869081][ T6728] ? dquot_get_next_dqblk+0x180/0x180 s. [ 67.874584][ T6728] ext4_append+0x153/0x360 [ 67.879356][ T6728] ext4_mkdir+0x5e0/0xdf0 [ 67.883703][ T6728] ? ext4_rmdir+0xde0/0xde0 [ 67.888243][ T6728] vfs_mkdir+0x419/0x690 [ 67.892503][ T6728] do_mkdirat+0x21e/0x280 [ 67.896855][ T6728] ? __ia32_sys_mknod+0xb0/0xb0 [ 67.901773][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.907749][ T6728] ? do_syscall_64+0x21/0x7d0 [ 67.912426][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.918398][ T6728] do_syscall_64+0xf6/0x7d0 [ 67.922882][ T6728] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 67.928777][ T6728] RIP: 0033:0x7f632f1dc687 [ 67.933165][ T6728] Code: Bad RIP value. [ 67.937204][ T6728] RSP: 002b:00007ffcac99cbf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 67.945600][ T6728] RAX: ffffffffffffffda RBX: 000055d090ad0985 RCX: 00007f632f1dc687 [ 67.953559][ T6728] RDX: 00007ffcac99cac0 RSI: 00000000000001ed RDI: 000055d090ad0985 [ 67.961506][ T6728] RBP: 00007f632f1dc680 R08: 0000000000000100 R09: 0000000000000000 [ 67.969477][ T6728] R10: 000055d090ad0980 R11: 0000000000000246 R12: 00000000000001ed [ 67.977435][ T6728] R13: 00007ffcac99cd80 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.15.193' (ECDSA) to the list of known hosts. 2020/06/13 03:56:29 fuzzer started 2020/06/13 03:56:29 connecting to host at 10.128.0.26:42249 2020/06/13 03:56:29 checking machine... 2020/06/13 03:56:29 checking revisions... 2020/06/13 03:56:29 testing simple program... syzkaller login: [ 70.511262][ T6790] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6790 [ 70.520512][ T6790] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 70.526901][ T6790] CPU: 0 PID: 6790 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 70.534968][ T6790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.545932][ T6790] Call Trace: [ 70.549555][ T6790] dump_stack+0x18f/0x20d [ 70.553880][ T6790] debug_smp_processor_id.cold+0x88/0x9b [ 70.559508][ T6790] ext4_mb_new_blocks+0xa4d/0x3b70 [ 70.564608][ T6790] ? ext4_ext_search_right+0x2ca/0xb20 [ 70.570045][ T6790] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 70.575747][ T6790] ext4_ext_map_blocks+0x201b/0x33e0 [ 70.581030][ T6790] ? ext4_ext_release+0x10/0x10 [ 70.585881][ T6790] ? down_write_killable+0x170/0x170 [ 70.591144][ T6790] ? ext4_es_lookup_extent+0x41d/0xd10 [ 70.596582][ T6790] ext4_map_blocks+0x4cb/0x1640 [ 70.601430][ T6790] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 70.606619][ T6790] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 70.612145][ T6790] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 70.618101][ T6790] ? prandom_u32_state+0xe/0x170 [ 70.623019][ T6790] ? __brelse+0x84/0xa0 [ 70.627165][ T6790] ? __ext4_new_inode+0x144/0x55e0 [ 70.632255][ T6790] ext4_getblk+0xad/0x520 [ 70.636564][ T6790] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 70.642269][ T6790] ? ext4_free_inode+0x1700/0x1700 [ 70.647373][ T6790] ext4_bread+0x7c/0x380 [ 70.651607][ T6790] ? ext4_getblk+0x520/0x520 [ 70.656174][ T6790] ? dquot_get_next_dqblk+0x180/0x180 [ 70.661631][ T6790] ext4_append+0x153/0x360 [ 70.666028][ T6790] ext4_mkdir+0x5e0/0xdf0 [ 70.670359][ T6790] ? ext4_rmdir+0xde0/0xde0 [ 70.674890][ T6790] vfs_mkdir+0x419/0x690 [ 70.679135][ T6790] do_mkdirat+0x21e/0x280 [ 70.683549][ T6790] ? __ia32_sys_mknod+0xb0/0xb0 [ 70.688376][ T6790] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 70.694333][ T6790] ? do_syscall_64+0x21/0x7d0 [ 70.698987][ T6790] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 70.705138][ T6790] do_syscall_64+0xf6/0x7d0 [ 70.709638][ T6790] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 70.715511][ T6790] RIP: 0033:0x4b02a0 [ 70.719394][ T6790] Code: Bad RIP value. [ 70.723437][ T6790] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 70.731833][ T6790] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 70.739797][ T6790] RDX: 00000000000001c0 RSI: 000000c00009d0e0 RDI: ffffffffffffff9c [ 70.747752][ T6790] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 70.755720][ T6790] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 70.763670][ T6790] R13: 0000000000000088 R14: 0000000000000087 R15: 0000000000000100 [ 70.789301][ T29] audit: type=1400 audit(1592020589.752:9): avc: denied { execmem } for pid=6805 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 70.811472][ T6805] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6805 [ 70.821111][ T6805] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 70.827008][ T6805] CPU: 1 PID: 6805 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 70.835249][ T6805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.845309][ T6805] Call Trace: [ 70.848598][ T6805] dump_stack+0x18f/0x20d [ 70.852952][ T6805] debug_smp_processor_id.cold+0x88/0x9b [ 70.858593][ T6805] ext4_mb_new_blocks+0xa4d/0x3b70 [ 70.863713][ T6805] ? ext4_ext_search_right+0x2ca/0xb20 [ 70.869177][ T6805] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 70.874901][ T6805] ext4_ext_map_blocks+0x201b/0x33e0 [ 70.880196][ T6805] ? ext4_ext_release+0x10/0x10 [ 70.885930][ T6805] ? down_write_killable+0x170/0x170 [ 70.891211][ T6805] ? ext4_es_lookup_extent+0x41d/0xd10 [ 70.896869][ T6805] ext4_map_blocks+0x4cb/0x1640 [ 70.901728][ T6805] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 70.907050][ T6805] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 70.912740][ T6805] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 70.918932][ T6805] ? prandom_u32_state+0xe/0x170 [ 70.923950][ T6805] ? __brelse+0x84/0xa0 [ 70.928106][ T6805] ? __ext4_new_inode+0x144/0x55e0 [ 70.933201][ T6805] ext4_getblk+0xad/0x520 [ 70.937537][ T6805] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 70.943251][ T6805] ? ext4_free_inode+0x1700/0x1700 [ 70.948370][ T6805] ext4_bread+0x7c/0x380 [ 70.952611][ T6805] ? ext4_getblk+0x520/0x520 [ 70.957212][ T6805] ? dquot_get_next_dqblk+0x180/0x180 [ 70.962628][ T6805] ? security_transition_sid+0x123/0x190 [ 70.968274][ T6805] ? security_transition_sid+0xed/0x190 [ 70.973850][ T6805] ext4_append+0x153/0x360 [ 70.978259][ T6805] ext4_mkdir+0x5e0/0xdf0 [ 70.982604][ T6805] ? ext4_rmdir+0xde0/0xde0 [ 70.987119][ T6805] vfs_mkdir+0x419/0x690 [ 70.991365][ T6805] do_mkdirat+0x21e/0x280 [ 70.995756][ T6805] ? __ia32_sys_mknod+0xb0/0xb0 [ 71.000653][ T6805] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.006747][ T6805] ? do_syscall_64+0x21/0x7d0 [ 71.011541][ T6805] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.017564][ T6805] do_syscall_64+0xf6/0x7d0 [ 71.022063][ T6805] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 71.027954][ T6805] RIP: 0033:0x45bee7 [ 71.031824][ T6805] Code: Bad RIP value. [ 71.035865][ T6805] RSP: 002b:00007ffc439f4d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 71.044253][ T6805] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 71.052209][ T6805] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffc439f4f30 [ 71.060178][ T6805] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003cc0 [ 71.068127][ T6805] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 71.077274][ T6805] R13: 00007ffc439f4f30 R14: 8421084210842109 R15: 00007ffc439f4f3c [ 71.157397][ T6806] IPVS: ftp: loaded support on port[0] = 21 [ 71.195465][ T6806] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6806 [ 71.205095][ T6806] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 71.211176][ T6806] CPU: 0 PID: 6806 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 71.219424][ T6806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.229489][ T6806] Call Trace: [ 71.232771][ T6806] dump_stack+0x18f/0x20d [ 71.237091][ T6806] debug_smp_processor_id.cold+0x88/0x9b [ 71.242708][ T6806] ext4_mb_new_blocks+0xa4d/0x3b70 [ 71.247853][ T6806] ? ext4_ext_search_right+0x2ca/0xb20 [ 71.253373][ T6806] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 71.259096][ T6806] ext4_ext_map_blocks+0x201b/0x33e0 [ 71.264382][ T6806] ? ext4_ext_release+0x10/0x10 [ 71.269223][ T6806] ? down_write_killable+0x170/0x170 [ 71.274516][ T6806] ? ext4_es_lookup_extent+0x41d/0xd10 [ 71.280045][ T6806] ext4_map_blocks+0x4cb/0x1640 [ 71.284887][ T6806] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 71.290065][ T6806] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 71.295737][ T6806] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 71.301711][ T6806] ? prandom_u32_state+0xe/0x170 [ 71.306656][ T6806] ? __brelse+0x84/0xa0 [ 71.310819][ T6806] ? __ext4_new_inode+0x144/0x55e0 [ 71.315928][ T6806] ext4_getblk+0xad/0x520 [ 71.320257][ T6806] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 71.325961][ T6806] ? ext4_free_inode+0x1700/0x1700 [ 71.331080][ T6806] ext4_bread+0x7c/0x380 [ 71.335319][ T6806] ? ext4_getblk+0x520/0x520 [ 71.339889][ T6806] ? dquot_get_next_dqblk+0x180/0x180 [ 71.345259][ T6806] ? security_transition_sid+0x123/0x190 [ 71.350871][ T6806] ? security_transition_sid+0xed/0x190 [ 71.356410][ T6806] ext4_append+0x153/0x360 [ 71.360808][ T6806] ext4_mkdir+0x5e0/0xdf0 [ 71.365124][ T6806] ? ext4_rmdir+0xde0/0xde0 [ 71.369629][ T6806] vfs_mkdir+0x419/0x690 [ 71.373853][ T6806] do_mkdirat+0x21e/0x280 [ 71.378273][ T6806] ? __ia32_sys_mknod+0xb0/0xb0 [ 71.383104][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.389063][ T6806] ? do_syscall_64+0x21/0x7d0 [ 71.393720][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.399699][ T6806] do_syscall_64+0xf6/0x7d0 [ 71.404205][ T6806] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 71.410097][ T6806] RIP: 0033:0x45bee7 [ 71.413995][ T6806] Code: Bad RIP value. [ 71.418038][ T6806] RSP: 002b:00007ffc439f4c48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 71.426426][ T6806] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 71.434394][ T6806] RDX: 00007ffc439f4c93 RSI: 00000000000001ff RDI: 00007ffc439f4c90 [ 71.442362][ T6806] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 71.450397][ T6806] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 71.458354][ T6806] R13: 00007ffc439f4c80 R14: 0000000000000000 R15: 00007ffc439f4c90 [ 71.507527][ T6806] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6806 [ 71.517178][ T6806] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 71.523194][ T6806] CPU: 0 PID: 6806 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 71.531525][ T6806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.541586][ T6806] Call Trace: [ 71.544898][ T6806] dump_stack+0x18f/0x20d [ 71.549249][ T6806] debug_smp_processor_id.cold+0x88/0x9b [ 71.554899][ T6806] ext4_mb_new_blocks+0xa4d/0x3b70 [ 71.560039][ T6806] ? ext4_ext_search_right+0x2ca/0xb20 [ 71.565514][ T6806] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 71.571261][ T6806] ext4_ext_map_blocks+0x201b/0x33e0 [ 71.576580][ T6806] ? ext4_ext_release+0x10/0x10 [ 71.581461][ T6806] ? down_write_killable+0x170/0x170 [ 71.586750][ T6806] ? ext4_es_lookup_extent+0x41d/0xd10 [ 71.592312][ T6806] ext4_map_blocks+0x4cb/0x1640 [ 71.597162][ T6806] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 71.602360][ T6806] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 71.607917][ T6806] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 71.613921][ T6806] ? prandom_u32_state+0xe/0x170 [ 71.618880][ T6806] ? __brelse+0x84/0xa0 [ 71.623214][ T6806] ? __ext4_new_inode+0x144/0x55e0 [ 71.628345][ T6806] ext4_getblk+0xad/0x520 [ 71.632666][ T6806] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 71.638370][ T6806] ? ext4_free_inode+0x1700/0x1700 [ 71.643469][ T6806] ext4_bread+0x7c/0x380 [ 71.647692][ T6806] ? ext4_getblk+0x520/0x520 [ 71.652522][ T6806] ? dquot_get_next_dqblk+0x180/0x180 [ 71.657888][ T6806] ? security_transition_sid+0x123/0x190 [ 71.663512][ T6806] ? security_transition_sid+0xed/0x190 [ 71.669059][ T6806] ext4_append+0x153/0x360 [ 71.673474][ T6806] ext4_mkdir+0x5e0/0xdf0 [ 71.677802][ T6806] ? ext4_rmdir+0xde0/0xde0 [ 71.682294][ T6806] vfs_mkdir+0x419/0x690 [ 71.686520][ T6806] do_mkdirat+0x21e/0x280 [ 71.690848][ T6806] ? __ia32_sys_mknod+0xb0/0xb0 [ 71.696649][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.702871][ T6806] ? do_syscall_64+0x21/0x7d0 [ 71.707526][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.713517][ T6806] do_syscall_64+0xf6/0x7d0 [ 71.718015][ T6806] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 71.723887][ T6806] RIP: 0033:0x45bee7 [ 71.727764][ T6806] Code: Bad RIP value. [ 71.731818][ T6806] RSP: 002b:00007ffc439f4c48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 71.740230][ T6806] RAX: ffffffffffffffda RBX: 0000000000011754 RCX: 000000000045bee7 [ 71.748312][ T6806] RDX: 00007ffc439f4c93 RSI: 00000000000001ff RDI: 00007ffc439f4c90 2020/06/13 03:56:30 building call list... [ 71.756275][ T6806] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 71.764246][ T6806] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 71.772198][ T6806] R13: 00007ffc439f4c80 R14: 0000000000011745 R15: 00007ffc439f4c90 [ 72.010497][ T7] tipc: TX() has been purged, node left! executing program [ 73.524556][ T6803] can: request_module (can-proto-0) failed. [ 73.976146][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 73.985415][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 73.991396][ T1157] CPU: 1 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 73.999280][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.009330][ T1157] Call Trace: [ 74.012628][ T1157] dump_stack+0x18f/0x20d [ 74.017123][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 74.022765][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 74.027883][ T1157] ? ext4_find_extent+0x81a/0xad0 [ 74.033010][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 74.038463][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 74.044197][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 74.049506][ T1157] ? ext4_ext_release+0x10/0x10 [ 74.054384][ T1157] ? down_write_killable+0x170/0x170 [ 74.054542][ T6803] can: request_module (can-proto-0) failed. [ 74.059671][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 74.071020][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 74.075889][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 74.079375][ T6803] can: request_module (can-proto-0) failed. [ 74.081092][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 74.081113][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 74.081127][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 74.081146][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 74.109442][ T1157] ext4_writepages+0x1a7b/0x33c0 [ 74.114401][ T1157] ? mark_lock+0x70/0xdd0 [ 74.118760][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 74.124441][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 74.130085][ T1157] ? do_writepages+0xfa/0x2a0 [ 74.134812][ T1157] do_writepages+0xfa/0x2a0 [ 74.139342][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 74.144998][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 74.145437][ T29] audit: type=1400 audit(1592020592.962:10): avc: denied { create } for pid=6787 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 [ 74.150022][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 74.150039][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 74.150058][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 74.150072][ T1157] ? collapse_file+0x35a2/0x4330 [ 74.150092][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 74.198111][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 74.203329][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.209332][ T1157] collapse_file+0x35ac/0x4330 [ 74.214130][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 74.219523][ T1157] ? khugepaged+0x2506/0x3fc0 [ 74.224227][ T1157] ? xas_find+0x31a/0x880 [ 74.228578][ T1157] khugepaged+0x3041/0x3fc0 [ 74.233122][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.238804][ T1157] ? lock_downgrade+0x840/0x840 [ 74.243674][ T1157] ? finish_wait+0x260/0x260 [ 74.248368][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 74.254190][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.260193][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 74.265234][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.270887][ T1157] kthread+0x3b5/0x4a0 [ 74.274974][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.280706][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.286445][ T1157] ret_from_fork+0x24/0x30 [ 74.366348][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 74.375776][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 74.382038][ T1157] CPU: 1 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 74.389933][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.400000][ T1157] Call Trace: [ 74.403310][ T1157] dump_stack+0x18f/0x20d [ 74.407663][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 74.413311][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 74.418458][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 74.423941][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 74.430116][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 74.435422][ T1157] ? ext4_ext_release+0x10/0x10 [ 74.440412][ T1157] ? down_write_killable+0x170/0x170 [ 74.445783][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 74.451283][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 74.456120][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 74.461315][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 74.466756][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 74.472440][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 74.478451][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 74.483907][ T1157] ext4_writepages+0x1a7b/0x33c0 [ 74.488861][ T1157] ? mark_lock+0x70/0xdd0 [ 74.493194][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 74.498828][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 74.504442][ T1157] ? do_writepages+0xfa/0x2a0 [ 74.509110][ T1157] do_writepages+0xfa/0x2a0 [ 74.513612][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 74.519238][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 74.524240][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 74.529422][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 74.534268][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 74.539979][ T1157] ? collapse_file+0x35a2/0x4330 [ 74.544901][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 74.550950][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 74.556145][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.562130][ T1157] collapse_file+0x35ac/0x4330 [ 74.566889][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 74.572242][ T1157] ? khugepaged+0x2506/0x3fc0 [ 74.576920][ T1157] ? xas_find+0x31a/0x880 [ 74.581246][ T1157] khugepaged+0x3041/0x3fc0 [ 74.585743][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.593102][ T1157] ? lock_downgrade+0x840/0x840 [ 74.598008][ T1157] ? finish_wait+0x260/0x260 [ 74.602608][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 74.608435][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.614411][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 74.619434][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.625045][ T1157] kthread+0x3b5/0x4a0 [ 74.629109][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.634807][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.640535][ T1157] ret_from_fork+0x24/0x30 [ 74.679659][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 74.689032][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 74.695045][ T1157] CPU: 1 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 74.702962][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.713023][ T1157] Call Trace: [ 74.716330][ T1157] dump_stack+0x18f/0x20d [ 74.720682][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 74.726539][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 74.731668][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 74.737119][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 74.743260][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 74.748558][ T1157] ? ext4_ext_release+0x10/0x10 [ 74.753560][ T1157] ? down_write_killable+0x170/0x170 [ 74.758834][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 74.764301][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 74.769141][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 74.774327][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 74.779788][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 74.785313][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 74.791270][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 74.796709][ T1157] ext4_writepages+0x1a7b/0x33c0 [ 74.801643][ T1157] ? mark_lock+0x70/0xdd0 [ 74.805960][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 74.811585][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 74.817211][ T1157] ? do_writepages+0xfa/0x2a0 [ 74.821882][ T1157] do_writepages+0xfa/0x2a0 [ 74.826365][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 74.831974][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 74.836971][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 74.842145][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 74.846989][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 74.852688][ T1157] ? collapse_file+0x35a2/0x4330 [ 74.857601][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 74.863662][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 74.868850][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.874826][ T1157] collapse_file+0x35ac/0x4330 [ 74.879591][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 74.884939][ T1157] ? khugepaged+0x2506/0x3fc0 [ 74.889615][ T1157] ? xas_find+0x31a/0x880 [ 74.893938][ T1157] khugepaged+0x3041/0x3fc0 [ 74.898436][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.904049][ T1157] ? lock_downgrade+0x840/0x840 [ 74.908878][ T1157] ? finish_wait+0x260/0x260 [ 74.913481][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 74.919264][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.925223][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 74.930228][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.935840][ T1157] kthread+0x3b5/0x4a0 [ 74.939892][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.945586][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.951283][ T1157] ret_from_fork+0x24/0x30