[ 52.424035][ T1] R10: 000055d752155bc0 R11: 0000000000000246 R12: 000055d752155be0 [ 52.432020][ T1] R13: 0000000000000000 R14: 0000000000000017 R15: 00007fff7b1b13e0 [ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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... [ OK ] Started Updat[ 68.080829][ T6736] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6736 e UTMP about Sys[ 68.090431][ T6736] caller is ext4_mb_new_blocks+0xa77/0x3b30 tem Runlevel Cha[ 68.098400][ T6736] CPU: 0 PID: 6736 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 68.108263][ T6736] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 nges. [ 68.118343][ T6736] Call Trace: [ 68.122281][ T6736] dump_stack+0x18f/0x20d [ 68.126899][ T6736] debug_smp_processor_id.cold+0x88/0x9b [ 68.132813][ T6736] ext4_mb_new_blocks+0xa77/0x3b30 [ 68.137957][ T6736] ? ext4_ext_search_right+0x2ca/0xb20 [ 68.143467][ T6736] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 68.149208][ T6736] ext4_ext_map_blocks+0x2044/0x3410 [ 68.154628][ T6736] ? ext4_ext_release+0x10/0x10 [ 68.159516][ T6736] ? __down_timeout+0x2d0/0x2d0 [ 68.164400][ T6736] ? ext4_es_lookup_extent+0x41d/0xd30 [ 68.169874][ T6736] ext4_map_blocks+0x4cb/0x1640 [ 68.174713][ T6736] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 68.179890][ T6736] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 68.185418][ T6736] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.191672][ T6736] ? prandom_u32_state+0xe/0x170 [ 68.196976][ T6736] ? __brelse+0x84/0xa0 [ 68.201138][ T6736] ? __ext4_new_inode+0x144/0x57c0 [ 68.206433][ T6736] ext4_getblk+0xad/0x520 [ 68.210824][ T6736] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 68.216585][ T6736] ? ext4_free_inode+0x17e0/0x17e0 [ 68.221725][ T6736] ext4_bread+0x7c/0x380 [ 68.225974][ T6736] ? ext4_getblk+0x520/0x520 [ 68.230709][ T6736] ? dqget+0xff0/0xff0 [ 68.235395][ T6736] ext4_append+0x153/0x360 [ 68.239938][ T6736] ext4_mkdir+0x5e0/0xdf0 [ 68.244625][ T6736] ? ext4_rmdir+0xde0/0xde0 [ 68.249162][ T6736] vfs_mkdir+0x419/0x690 [ 68.254133][ T6736] do_mkdirat+0x21e/0x280 [ 68.258471][ T6736] ? __ia32_sys_mknod+0xb0/0xb0 [ 68.263322][ T6736] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.269516][ T6736] ? do_syscall_64+0x21/0x7d0 [ 68.274362][ T6736] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.280626][ T6736] do_syscall_64+0xf6/0x7d0 [ 68.285245][ T6736] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 68.291144][ T6736] RIP: 0033:0x7f6c05259687 [ 68.295555][ T6736] Code: Bad RIP value. [ 68.299622][ T6736] RSP: 002b:00007ffd68484e68 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 68.308976][ T6736] RAX: ffffffffffffffda RBX: 000055e5ff4c1985 RCX: 00007f6c05259687 [ 68.316939][ T6736] RDX: 00007ffd68484d30 RSI: 00000000000001ed RDI: 000055e5ff4c1985 [ 68.325018][ T6736] RBP: 00007f6c05259680 R08: 0000000000000100 R09: 0000000000000000 [ 68.334469][ T6736] R10: 000055e5ff4c1980 R11: 0000000000000246 R12: 00000000000001ed [ 68.342453][ T6736] R13: 00007ffd68484ff0 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.243' (ECDSA) to the list of known hosts. 2020/06/10 20:51:27 fuzzer started 2020/06/10 20:51:27 connecting to host at 10.128.0.26:39073 2020/06/10 20:51:27 checking machine... 2020/06/10 20:51:27 checking revisions... 2020/06/10 20:51:27 testing simple program... syzkaller login: [ 70.924954][ T6795] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6795 [ 70.934054][ T6795] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 70.940552][ T6795] CPU: 1 PID: 6795 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 70.948446][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.958501][ T6795] Call Trace: [ 70.961787][ T6795] dump_stack+0x18f/0x20d [ 70.966102][ T6795] debug_smp_processor_id.cold+0x88/0x9b [ 70.971724][ T6795] ext4_mb_new_blocks+0xa77/0x3b30 [ 70.976823][ T6795] ? ext4_ext_search_right+0x2ca/0xb20 [ 70.982260][ T6795] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 70.987961][ T6795] ext4_ext_map_blocks+0x2044/0x3410 [ 70.993313][ T6795] ? ext4_ext_release+0x10/0x10 [ 70.998218][ T6795] ? __down_timeout+0x2d0/0x2d0 [ 71.003067][ T6795] ? ext4_es_lookup_extent+0x41d/0xd30 [ 71.008626][ T6795] ext4_map_blocks+0x4cb/0x1640 [ 71.013501][ T6795] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 71.018684][ T6795] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 71.024211][ T6795] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 71.030175][ T6795] ? prandom_u32_state+0xe/0x170 [ 71.035119][ T6795] ? __brelse+0x84/0xa0 [ 71.039282][ T6795] ? __ext4_new_inode+0x144/0x57c0 [ 71.044403][ T6795] ext4_getblk+0xad/0x520 [ 71.048731][ T6795] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 71.054443][ T6795] ? ext4_free_inode+0x17e0/0x17e0 [ 71.059562][ T6795] ext4_bread+0x7c/0x380 [ 71.063874][ T6795] ? ext4_getblk+0x520/0x520 [ 71.068455][ T6795] ? dqget+0xff0/0xff0 [ 71.072584][ T6795] ext4_append+0x153/0x360 [ 71.077014][ T6795] ext4_mkdir+0x5e0/0xdf0 [ 71.081447][ T6795] ? ext4_rmdir+0xde0/0xde0 [ 71.085957][ T6795] vfs_mkdir+0x419/0x690 [ 71.090197][ T6795] do_mkdirat+0x21e/0x280 [ 71.094535][ T6795] ? __ia32_sys_mknod+0xb0/0xb0 [ 71.099380][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.105351][ T6795] ? do_syscall_64+0x21/0x7d0 [ 71.110039][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.117064][ T6795] do_syscall_64+0xf6/0x7d0 [ 71.121567][ T6795] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 71.127458][ T6795] RIP: 0033:0x4b02a0 [ 71.131327][ T6795] Code: Bad RIP value. [ 71.135371][ T6795] RSP: 002b:000000c0000d14b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 71.143794][ T6795] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 71.151766][ T6795] RDX: 00000000000001c0 RSI: 000000c0003428c0 RDI: ffffffffffffff9c [ 71.159738][ T6795] RBP: 000000c0000d1510 R08: 0000000000000000 R09: 0000000000000000 [ 71.170671][ T6795] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 71.178638][ T6795] R13: 0000000000000047 R14: 0000000000000046 R15: 0000000000000100 [ 71.194128][ T29] audit: type=1400 audit(1591822287.954:8): avc: denied { execmem } for pid=6809 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 71.211853][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6809 [ 71.224740][ T6809] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 71.230884][ T6809] CPU: 1 PID: 6809 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 71.239509][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.249564][ T6809] Call Trace: [ 71.252863][ T6809] dump_stack+0x18f/0x20d [ 71.257530][ T6809] debug_smp_processor_id.cold+0x88/0x9b [ 71.263180][ T6809] ext4_mb_new_blocks+0xa77/0x3b30 [ 71.268320][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 71.273801][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 71.280127][ T6809] ext4_ext_map_blocks+0x2044/0x3410 [ 71.285410][ T6809] ? ext4_ext_release+0x10/0x10 [ 71.290277][ T6809] ? __down_timeout+0x2d0/0x2d0 [ 71.295121][ T6809] ? ext4_es_lookup_extent+0x41d/0xd30 [ 71.300592][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 71.305444][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 71.310640][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 71.316179][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 71.322446][ T6809] ? prandom_u32_state+0xe/0x170 [ 71.327389][ T6809] ? __brelse+0x84/0xa0 [ 71.331558][ T6809] ? __ext4_new_inode+0x144/0x57c0 [ 71.336668][ T6809] ext4_getblk+0xad/0x520 [ 71.340994][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 71.346718][ T6809] ? ext4_free_inode+0x17e0/0x17e0 [ 71.351818][ T6809] ext4_bread+0x7c/0x380 [ 71.356058][ T6809] ? ext4_getblk+0x520/0x520 [ 71.360637][ T6809] ? dqget+0xff0/0xff0 [ 71.364701][ T6809] ? security_transition_sid+0x123/0x190 [ 71.370346][ T6809] ? security_transition_sid+0xed/0x190 [ 71.375875][ T6809] ext4_append+0x153/0x360 [ 71.380292][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 71.384606][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 71.389115][ T6809] vfs_mkdir+0x419/0x690 [ 71.393348][ T6809] do_mkdirat+0x21e/0x280 [ 71.397679][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 71.402610][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.408577][ T6809] ? do_syscall_64+0x21/0x7d0 [ 71.413349][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.419486][ T6809] do_syscall_64+0xf6/0x7d0 [ 71.423977][ T6809] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 71.429872][ T6809] RIP: 0033:0x45bee7 [ 71.433758][ T6809] Code: Bad RIP value. [ 71.437823][ T6809] RSP: 002b:00007ffcb134af58 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 71.446259][ T6809] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 71.454247][ T6809] RDX: 0000000000000004 RSI: 00000000000001c0 RDI: 00007ffcb134b130 [ 71.462243][ T6809] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000004100 [ 71.470820][ T6809] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 71.478781][ T6809] R13: 00007ffcb134b130 R14: 8421084210842109 R15: 00007ffcb134b13c [ 71.578823][ T6810] IPVS: ftp: loaded support on port[0] = 21 [ 71.619679][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 71.629561][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 71.635440][ T6810] CPU: 0 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 71.643746][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.654127][ T6810] Call Trace: [ 71.657449][ T6810] dump_stack+0x18f/0x20d [ 71.661764][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 71.667438][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 71.672561][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 71.678032][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 71.683750][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 71.689038][ T6810] ? ext4_ext_release+0x10/0x10 [ 71.693936][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 71.699189][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 71.704835][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 71.709778][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 71.715051][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 71.720581][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 71.726565][ T6810] ? prandom_u32_state+0xe/0x170 [ 71.732050][ T6810] ? __brelse+0x84/0xa0 [ 71.736205][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 71.741344][ T6810] ext4_getblk+0xad/0x520 [ 71.745659][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 71.751451][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 71.756569][ T6810] ext4_bread+0x7c/0x380 [ 71.760804][ T6810] ? ext4_getblk+0x520/0x520 [ 71.765393][ T6810] ? dqget+0xff0/0xff0 [ 71.769454][ T6810] ? security_transition_sid+0x123/0x190 [ 71.775099][ T6810] ? security_transition_sid+0xed/0x190 [ 71.781088][ T6810] ext4_append+0x153/0x360 [ 71.785510][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 71.789848][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 71.794374][ T6810] vfs_mkdir+0x419/0x690 [ 71.798698][ T6810] do_mkdirat+0x21e/0x280 [ 71.803202][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 71.808581][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.814544][ T6810] ? do_syscall_64+0x21/0x7d0 [ 71.819199][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 71.825214][ T6810] do_syscall_64+0xf6/0x7d0 [ 71.831721][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 71.837786][ T6810] RIP: 0033:0x45bee7 [ 71.841653][ T6810] Code: Bad RIP value. [ 71.845706][ T6810] RSP: 002b:00007ffcb134ae48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 71.854107][ T6810] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 71.862394][ T6810] RDX: 00007ffcb134ae93 RSI: 00000000000001ff RDI: 00007ffcb134ae90 [ 71.870545][ T6810] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 71.878513][ T6810] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 71.886479][ T6810] R13: 00007ffcb134ae80 R14: 0000000000000000 R15: 00007ffcb134ae90 [ 71.960020][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 71.969595][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 71.975506][ T6810] CPU: 0 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 71.983825][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.994401][ T6810] Call Trace: [ 71.997734][ T6810] dump_stack+0x18f/0x20d [ 72.002084][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 72.007743][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 72.012884][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 72.018367][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 72.024379][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 72.030354][ T6810] ? ext4_ext_release+0x10/0x10 [ 72.035342][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 72.040197][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 72.045657][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 72.050498][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 72.055689][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 72.061241][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 72.067216][ T6810] ? prandom_u32_state+0xe/0x170 [ 72.072132][ T6810] ? __brelse+0x84/0xa0 [ 72.076299][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 72.081438][ T6810] ext4_getblk+0xad/0x520 [ 72.085761][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 72.091498][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 72.096800][ T6810] ext4_bread+0x7c/0x380 [ 72.101051][ T6810] ? ext4_getblk+0x520/0x520 [ 72.105645][ T6810] ? dqget+0xff0/0xff0 [ 72.109793][ T6810] ? security_transition_sid+0x123/0x190 [ 72.115422][ T6810] ? security_transition_sid+0xed/0x190 [ 72.120950][ T6810] ext4_append+0x153/0x360 [ 72.125666][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 72.129989][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 72.134484][ T6810] vfs_mkdir+0x419/0x690 [ 72.138717][ T6810] do_mkdirat+0x21e/0x280 [ 72.143029][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 72.147863][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 72.153823][ T6810] ? do_syscall_64+0x21/0x7d0 [ 72.158480][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 72.164463][ T6810] do_syscall_64+0xf6/0x7d0 [ 72.168968][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 72.174948][ T6810] RIP: 0033:0x45bee7 [ 72.178919][ T6810] Code: Bad RIP value. [ 72.183251][ T6810] RSP: 002b:00007ffcb134ae48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 72.191940][ T6810] RAX: ffffffffffffffda RBX: 0000000000011901 RCX: 000000000045bee7 [ 72.200486][ T6810] RDX: 00007ffcb134ae93 RSI: 00000000000001ff RDI: 00007ffcb134ae90 [ 72.208505][ T6810] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 72.216481][ T6810] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 72.224741][ T6810] R13: 00007ffcb134ae80 R14: 00000000000118f3 R15: 00007ffcb134ae90 2020/06/10 20:51:29 building call list... [ 72.445955][ T176] tipc: TX() has been purged, node left! [ 73.592220][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 73.601549][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 73.607571][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 73.615629][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.625768][ T1157] Call Trace: [ 73.629062][ T1157] dump_stack+0x18f/0x20d [ 73.633398][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 73.639034][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 73.644151][ T1157] ? __kmalloc+0x62f/0x7a0 [ 73.648581][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 73.654036][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 73.659807][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 73.665207][ T1157] ? ext4_ext_release+0x10/0x10 [ 73.670080][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 73.675103][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 73.680584][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 73.686035][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 73.691250][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 73.696760][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 73.702307][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 73.708302][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 73.713784][ T1157] ext4_writepages+0x1ab7/0x3400 [ 73.718918][ T1157] ? mark_lock+0x50/0xdd0 [ 73.723280][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 73.729034][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 73.734685][ T1157] ? do_writepages+0xfa/0x2a0 [ 73.739375][ T1157] do_writepages+0xfa/0x2a0 [ 73.743884][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 73.749557][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 73.754718][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 73.759949][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 73.765775][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 73.771523][ T1157] ? collapse_file+0x3575/0x4300 [ 73.776476][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 73.782588][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 73.787812][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 73.793826][ T1157] collapse_file+0x357f/0x4300 [ 73.798639][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 73.804011][ T1157] ? khugepaged+0x24fa/0x3f80 [ 73.808718][ T1157] ? pppol2tp_ioctl+0x5a8/0x8b0 [ 73.813578][ T1157] khugepaged+0x3049/0x3f80 [ 73.818097][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 73.823766][ T1157] ? lock_downgrade+0x840/0x840 [ 73.828642][ T1157] ? finish_wait+0x260/0x260 [ 73.833240][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 executing program [ 73.839048][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 73.845045][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 73.850067][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 73.855697][ T1157] kthread+0x388/0x470 [ 73.859773][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 73.865660][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 73.871781][ T1157] ret_from_fork+0x24/0x30 [ 73.981801][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 73.990990][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 73.997025][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 74.004917][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.014979][ T1157] Call Trace: [ 74.018289][ T1157] dump_stack+0x18f/0x20d [ 74.023272][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 74.028910][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 74.034059][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 74.039567][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 74.045758][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 74.051070][ T1157] ? ext4_ext_release+0x10/0x10 [ 74.055945][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 74.060802][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 74.066269][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 74.071125][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 74.076339][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 74.081804][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 74.087351][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 74.093327][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 74.098792][ T1157] ext4_writepages+0x1ab7/0x3400 [ 74.103731][ T1157] ? mark_lock+0x50/0xdd0 [ 74.108191][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 74.113849][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 74.119475][ T1157] ? do_writepages+0xfa/0x2a0 [ 74.124163][ T1157] do_writepages+0xfa/0x2a0 [ 74.128671][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 74.134322][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 74.139344][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 74.144540][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 74.149400][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 74.155115][ T1157] ? collapse_file+0x3575/0x4300 [ 74.160050][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 74.166128][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 74.171494][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.177491][ T1157] collapse_file+0x357f/0x4300 [ 74.182267][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 74.187642][ T1157] ? khugepaged+0x24fa/0x3f80 [ 74.192345][ T1157] ? pppol2tp_ioctl+0x5a8/0x8b0 [ 74.197222][ T1157] khugepaged+0x3049/0x3f80 [ 74.201746][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.207383][ T1157] ? lock_downgrade+0x840/0x840 [ 74.212227][ T1157] ? finish_wait+0x260/0x260 [ 74.216815][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 74.222615][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.228614][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 74.233656][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.239298][ T1157] kthread+0x388/0x470 [ 74.243360][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.249073][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.254793][ T1157] ret_from_fork+0x24/0x30 [ 74.368035][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 74.377578][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 74.383743][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 74.391797][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.401867][ T1157] Call Trace: [ 74.405189][ T1157] dump_stack+0x18f/0x20d [ 74.409522][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 74.415217][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 74.420383][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 74.425875][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 74.432039][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 74.437506][ T1157] ? ext4_ext_release+0x10/0x10 [ 74.442381][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 74.447255][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 74.452750][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 74.457815][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 74.463193][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 74.468667][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 74.474209][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 74.480186][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 74.486430][ T1157] ext4_writepages+0x1ab7/0x3400 [ 74.491476][ T1157] ? mark_lock+0x50/0xdd0 [ 74.495825][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 74.502787][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 74.508420][ T1157] ? do_writepages+0xfa/0x2a0 [ 74.513104][ T1157] do_writepages+0xfa/0x2a0 [ 74.518252][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 74.523995][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 74.529047][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 74.534276][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 74.539160][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 74.544898][ T1157] ? collapse_file+0x3575/0x4300 [ 74.549858][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 74.556415][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 74.561725][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.568774][ T1157] collapse_file+0x357f/0x4300 [ 74.568817][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 74.578958][ T1157] ? khugepaged+0x24fa/0x3f80 [ 74.578993][ T1157] ? pppol2tp_ioctl+0x5a8/0x8b0 [ 74.588515][ T1157] khugepaged+0x3049/0x3f80 [ 74.588553][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.598733][ T1157] ? lock_downgrade+0x840/0x840 [ 74.603688][ T1157] ? finish_wait+0x260/0x260 [ 74.608293][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 74.614096][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 74.620088][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 74.625368][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 74.631938][ T1157] kthread+0x388/0x470 [ 74.636023][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.641773][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 74.647488][ T1157] ret_from_fork+0x24/0x30 [ 74.866432][ T6792] can: request_module (can-proto-0) failed. [ 75.023198][ T6792] can: request_module (can-proto-0) failed. [ 75.035765][ T6792] can: request_module (can-proto-0) failed. [ 75.087204][ T29] audit: type=1400 audit(1591822291.855:9): avc: denied { create } for pid=6792 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1