[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ 54.735638][ T6757] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6757 [ 54.745158][ T6757] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 54.751158][ T6757] CPU: 0 PID: 6757 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 54.759394][ T6757] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.769439][ T6757] Call Trace: [ 54.772745][ T6757] dump_stack+0x188/0x20d [ 54.777071][ T6757] debug_smp_processor_id.cold+0x88/0x9b [ 54.782944][ T6757] ext4_mb_new_blocks+0xa77/0x3b30 [ 54.788045][ T6757] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.793497][ T6757] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.799254][ T6757] ext4_ext_map_blocks+0x2044/0x3410 [ 54.804536][ T6757] ? ext4_ext_release+0x10/0x10 [ 54.809553][ T6757] ? __down_timeout+0x2d0/0x2d0 [ 54.814407][ T6757] ? ext4_es_lookup_extent+0x41d/0xd30 [ 54.819847][ T6757] ext4_map_blocks+0x4cb/0x1640 [ 54.824797][ T6757] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.829995][ T6757] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.835904][ T6757] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.841987][ T6757] ? prandom_u32_state+0xe/0x170 [ 54.846929][ T6757] ? __brelse+0x84/0xa0 [ 54.851094][ T6757] ? __ext4_new_inode+0x144/0x57c0 [ 54.856412][ T6757] ext4_getblk+0xad/0x520 [ 54.860735][ T6757] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 54.866462][ T6757] ? ext4_free_inode+0x17e0/0x17e0 [ 54.871577][ T6757] ext4_bread+0x7c/0x380 [ 54.875888][ T6757] ? ext4_getblk+0x520/0x520 [ 54.880655][ T6757] ? dqget+0xff0/0xff0 [ 54.884717][ T6757] ext4_append+0x153/0x360 [ 54.889208][ T6757] ext4_mkdir+0x5e0/0xdf0 [ 54.893644][ T6757] ? ext4_rmdir+0xde0/0xde0 [ 54.898228][ T6757] ? security_inode_permission+0xc4/0xf0 [ 54.903852][ T6757] vfs_mkdir+0x419/0x690 [ 54.908103][ T6757] do_mkdirat+0x21e/0x280 [ 54.912427][ T6757] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.917268][ T6757] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.923420][ T6757] ? do_syscall_64+0x21/0x7d0 [ 54.928400][ T6757] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.934576][ T6757] do_syscall_64+0xf6/0x7d0 [ 54.939068][ T6757] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 54.944959][ T6757] RIP: 0033:0x7ff20dff1687 [ 54.949382][ T6757] 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 [ 54.968965][ T6757] RSP: 002b:00007ffcfc09efb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.977377][ T6757] RAX: ffffffffffffffda RBX: 0000562995697985 RCX: 00007ff20dff1687 [ 54.985361][ T6757] RDX: 00007ffcfc09ee80 RSI: 00000000000001ed RDI: 0000562995697985 [ 54.993318][ T6757] RBP: 00007ff20dff1680 R08: 0000000000000100 R09: 0000000000000000 [ 55.002506][ T6757] R10: 0000562995697980 R11: 0000000000000246 R12: 00000000000001ed [ 55.010558][ T6757] R13: 00007ffcfc09f140 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 57.202571][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 57.211998][ T21] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.218080][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 57.226158][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.236227][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 57.242189][ T21] Call Trace: [ 57.245472][ T21] dump_stack+0x188/0x20d [ 57.249789][ T21] debug_smp_processor_id.cold+0x88/0x9b [ 57.255418][ T21] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.260606][ T21] ? __kmalloc+0x62f/0x7a0 [ 57.265005][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.270460][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.276159][ T21] ext4_ext_map_blocks+0x2044/0x3410 [ 57.281610][ T21] ? ext4_ext_release+0x10/0x10 [ 57.286447][ T21] ? __down_timeout+0x2d0/0x2d0 [ 57.291284][ T21] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.296722][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 57.302159][ T21] ext4_map_blocks+0x4cb/0x1640 [ 57.306999][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.312270][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 57.317710][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.323408][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.329373][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.334810][ T21] ext4_writepages+0x1ab7/0x3400 [ 57.339735][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.345342][ T21] ? __lock_acquire+0x2224/0x48a0 [ 57.350355][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.356410][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.362367][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.367985][ T21] ? do_writepages+0xfa/0x2a0 [ 57.372639][ T21] do_writepages+0xfa/0x2a0 [ 57.377121][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 57.382737][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 57.388181][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.393715][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.399693][ T21] ? lock_downgrade+0x840/0x840 [ 57.406899][ T21] __writeback_single_inode+0x12a/0x1410 [ 57.412537][ T21] ? _raw_spin_unlock+0x24/0x40 [ 57.418952][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.424936][ T21] writeback_sb_inodes+0x515/0xdd0 [ 57.431002][ T21] ? __writeback_single_inode+0x1410/0x1410 [ 57.437072][ T21] __writeback_inodes_wb+0xc3/0x250 [ 57.442613][ T21] wb_writeback+0x910/0xd90 [ 57.447180][ T21] ? print_usage_bug+0x240/0x240 [ 57.452105][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.458419][ T21] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.464390][ T21] ? cpumask_next+0x3c/0x40 [ 57.469402][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.474578][ T21] wb_workfn+0xadf/0x10d0 [ 57.479670][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 57.485200][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 57.490642][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.496173][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.502141][ T21] process_one_work+0x965/0x16a0 [ 57.507059][ T21] ? lock_release+0x800/0x800 [ 57.511719][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.517080][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 57.522171][ T21] worker_thread+0x96/0xe10 [ 57.526664][ T21] ? process_one_work+0x16a0/0x16a0 [ 57.531976][ T21] kthread+0x388/0x470 [ 57.536052][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.541864][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.547631][ T21] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.151' (ECDSA) to the list of known hosts. 2020/06/08 18:22:13 fuzzer started 2020/06/08 18:22:13 connecting to host at 10.128.0.26:44077 2020/06/08 18:22:13 checking machine... 2020/06/08 18:22:13 checking revisions... 2020/06/08 18:22:13 testing simple program... [ 60.452957][ T6825] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6825 [ 60.462085][ T6825] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.467982][ T6825] CPU: 1 PID: 6825 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 60.475846][ T6825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.486576][ T6825] Call Trace: [ 60.489874][ T6825] dump_stack+0x188/0x20d [ 60.494188][ T6825] debug_smp_processor_id.cold+0x88/0x9b [ 60.499898][ T6825] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.504991][ T6825] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.510470][ T6825] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.516203][ T6825] ext4_ext_map_blocks+0x2044/0x3410 [ 60.521488][ T6825] ? ext4_ext_release+0x10/0x10 [ 60.526328][ T6825] ? __down_timeout+0x2d0/0x2d0 [ 60.534812][ T6825] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.540265][ T6825] ext4_map_blocks+0x4cb/0x1640 [ 60.545110][ T6825] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.550374][ T6825] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.555900][ T6825] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.562972][ T6825] ? prandom_u32_state+0xe/0x170 [ 60.567914][ T6825] ? __brelse+0x84/0xa0 [ 60.572071][ T6825] ? __ext4_new_inode+0x144/0x57c0 [ 60.577258][ T6825] ext4_getblk+0xad/0x520 [ 60.581570][ T6825] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.587311][ T6825] ? ext4_free_inode+0x17e0/0x17e0 [ 60.592420][ T6825] ext4_bread+0x7c/0x380 [ 60.596655][ T6825] ? ext4_getblk+0x520/0x520 [ 60.601227][ T6825] ? dqget+0xff0/0xff0 [ 60.605293][ T6825] ext4_append+0x153/0x360 [ 60.609693][ T6825] ext4_mkdir+0x5e0/0xdf0 [ 60.614009][ T6825] ? ext4_rmdir+0xde0/0xde0 [ 60.618509][ T6825] ? security_inode_permission+0xc4/0xf0 [ 60.624145][ T6825] vfs_mkdir+0x419/0x690 [ 60.628369][ T6825] do_mkdirat+0x21e/0x280 [ 60.632686][ T6825] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.637514][ T6825] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.643475][ T6825] ? do_syscall_64+0x21/0x7d0 [ 60.648130][ T6825] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.654091][ T6825] do_syscall_64+0xf6/0x7d0 [ 60.658594][ T6825] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.664501][ T6825] RIP: 0033:0x4b02a0 [ 60.668373][ T6825] 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 [ 60.687970][ T6825] RSP: 002b:000000c0000e74b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.696392][ T6825] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 60.704353][ T6825] RDX: 00000000000001c0 RSI: 000000c0000271a0 RDI: ffffffffffffff9c [ 60.712307][ T6825] RBP: 000000c0000e7510 R08: 0000000000000000 R09: 0000000000000000 [ 60.720431][ T6825] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.728398][ T6825] R13: 000000000000008e R14: 000000000000008d R15: 0000000000000100 [ 60.746469][ T6844] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6844 [ 60.755959][ T6844] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.761928][ T6844] CPU: 1 PID: 6844 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.770262][ T6844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.780319][ T6844] Call Trace: [ 60.783597][ T6844] dump_stack+0x188/0x20d [ 60.787934][ T6844] debug_smp_processor_id.cold+0x88/0x9b [ 60.793566][ T6844] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.799110][ T6844] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.804547][ T6844] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.810246][ T6844] ext4_ext_map_blocks+0x2044/0x3410 [ 60.815531][ T6844] ? ext4_ext_release+0x10/0x10 [ 60.820388][ T6844] ? __down_timeout+0x2d0/0x2d0 [ 60.825218][ T6844] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.830685][ T6844] ext4_map_blocks+0x4cb/0x1640 [ 60.835525][ T6844] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.840719][ T6844] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.846721][ T6844] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.852686][ T6844] ? prandom_u32_state+0xe/0x170 [ 60.857609][ T6844] ? __brelse+0x84/0xa0 [ 60.861795][ T6844] ? __ext4_new_inode+0x144/0x57c0 [ 60.867046][ T6844] ext4_getblk+0xad/0x520 [ 60.871369][ T6844] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.877084][ T6844] ? ext4_free_inode+0x17e0/0x17e0 [ 60.882191][ T6844] ext4_bread+0x7c/0x380 [ 60.886417][ T6844] ? ext4_getblk+0x520/0x520 [ 60.890996][ T6844] ? dqget+0xff0/0xff0 [ 60.895070][ T6844] ext4_append+0x153/0x360 [ 60.899577][ T6844] ext4_mkdir+0x5e0/0xdf0 [ 60.903892][ T6844] ? ext4_rmdir+0xde0/0xde0 [ 60.908382][ T6844] ? security_inode_permission+0xc4/0xf0 [ 60.914001][ T6844] vfs_mkdir+0x419/0x690 [ 60.918233][ T6844] do_mkdirat+0x21e/0x280 [ 60.922566][ T6844] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.927395][ T6844] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.933354][ T6844] ? do_syscall_64+0x21/0x7d0 [ 60.938024][ T6844] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.943984][ T6844] do_syscall_64+0xf6/0x7d0 [ 60.949164][ T6844] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.955049][ T6844] RIP: 0033:0x45bee7 [ 60.958920][ T6844] 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 [ 60.978502][ T6844] RSP: 002b:00007ffe057300d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.986918][ T6844] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.994890][ T6844] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffe057302b0 [ 61.002859][ T6844] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002d80 [ 61.011364][ T6844] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.019321][ T6844] R13: 00007ffe057302b0 R14: 8421084210842109 R15: 00007ffe057302bc [ 61.104249][ T6845] IPVS: ftp: loaded support on port[0] = 21 [ 61.141439][ T6845] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6845 [ 61.151063][ T6845] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.156993][ T6845] CPU: 0 PID: 6845 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.165226][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.175262][ T6845] Call Trace: [ 61.178545][ T6845] dump_stack+0x188/0x20d [ 61.182963][ T6845] debug_smp_processor_id.cold+0x88/0x9b [ 61.188580][ T6845] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.193694][ T6845] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.199148][ T6845] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.204858][ T6845] ext4_ext_map_blocks+0x2044/0x3410 [ 61.210313][ T6845] ? ext4_ext_release+0x10/0x10 [ 61.215169][ T6845] ? __down_timeout+0x2d0/0x2d0 [ 61.219995][ T6845] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.225953][ T6845] ext4_map_blocks+0x4cb/0x1640 [ 61.230800][ T6845] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.237709][ T6845] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.243407][ T6845] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.249384][ T6845] ? prandom_u32_state+0xe/0x170 [ 61.254401][ T6845] ? __brelse+0x84/0xa0 [ 61.258539][ T6845] ? __ext4_new_inode+0x144/0x57c0 [ 61.263634][ T6845] ext4_getblk+0xad/0x520 [ 61.267965][ T6845] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.273680][ T6845] ? ext4_free_inode+0x17e0/0x17e0 [ 61.278996][ T6845] ext4_bread+0x7c/0x380 [ 61.283232][ T6845] ? ext4_getblk+0x520/0x520 [ 61.287823][ T6845] ? dqget+0xff0/0xff0 [ 61.291987][ T6845] ext4_append+0x153/0x360 [ 61.296397][ T6845] ext4_mkdir+0x5e0/0xdf0 [ 61.301591][ T6845] ? ext4_rmdir+0xde0/0xde0 [ 61.306093][ T6845] ? security_inode_permission+0xc4/0xf0 [ 61.311727][ T6845] vfs_mkdir+0x419/0x690 [ 61.316223][ T6845] do_mkdirat+0x21e/0x280 [ 61.320557][ T6845] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.325388][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.331455][ T6845] ? do_syscall_64+0x21/0x7d0 [ 61.336243][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.342225][ T6845] do_syscall_64+0xf6/0x7d0 [ 61.346727][ T6845] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.352606][ T6845] RIP: 0033:0x45bee7 [ 61.356495][ T6845] 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 [ 61.376170][ T6845] RSP: 002b:00007ffe0572ffc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.384698][ T6845] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.392673][ T6845] RDX: 00007ffe05730013 RSI: 00000000000001ff RDI: 00007ffe05730010 [ 61.400653][ T6845] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.408619][ T6845] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 61.416589][ T6845] R13: 00007ffe05730000 R14: 0000000000000000 R15: 00007ffe05730010 [ 61.464947][ T6845] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6845 [ 61.474431][ T6845] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.480673][ T6845] CPU: 0 PID: 6845 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.488980][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.499026][ T6845] Call Trace: [ 61.502327][ T6845] dump_stack+0x188/0x20d [ 61.507285][ T6845] debug_smp_processor_id.cold+0x88/0x9b [ 61.513020][ T6845] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.518167][ T6845] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.523639][ T6845] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.529375][ T6845] ext4_ext_map_blocks+0x2044/0x3410 [ 61.534772][ T6845] ? ext4_ext_release+0x10/0x10 [ 61.539732][ T6845] ? __down_timeout+0x2d0/0x2d0 [ 61.544596][ T6845] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.550084][ T6845] ext4_map_blocks+0x4cb/0x1640 [ 61.554966][ T6845] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.564813][ T6845] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.570375][ T6845] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.576454][ T6845] ? prandom_u32_state+0xe/0x170 [ 61.581377][ T6845] ? __brelse+0x84/0xa0 [ 61.585514][ T6845] ? __ext4_new_inode+0x144/0x57c0 [ 61.590619][ T6845] ext4_getblk+0xad/0x520 [ 61.595227][ T6845] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.600951][ T6845] ? ext4_free_inode+0x17e0/0x17e0 [ 61.606051][ T6845] ext4_bread+0x7c/0x380 [ 61.610319][ T6845] ? ext4_getblk+0x520/0x520 [ 61.615001][ T6845] ? dqget+0xff0/0xff0 [ 61.619061][ T6845] ext4_append+0x153/0x360 [ 61.623552][ T6845] ext4_mkdir+0x5e0/0xdf0 [ 61.627877][ T6845] ? ext4_rmdir+0xde0/0xde0 [ 61.632374][ T6845] ? security_inode_permission+0xc4/0xf0 [ 61.638037][ T6845] vfs_mkdir+0x419/0x690 [ 61.642271][ T6845] do_mkdirat+0x21e/0x280 [ 61.646612][ T6845] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.651455][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.657679][ T6845] ? do_syscall_64+0x21/0x7d0 [ 61.662795][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.669556][ T6845] do_syscall_64+0xf6/0x7d0 [ 61.674077][ T6845] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.679968][ T6845] RIP: 0033:0x45bee7 [ 61.684464][ T6845] 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 [ 61.705354][ T6845] RSP: 002b:00007ffe0572ffc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 2020/06/08 18:22:15 building call list... [ 61.714123][ T6845] RAX: ffffffffffffffda RBX: 000000000000f009 RCX: 000000000045bee7 [ 61.722104][ T6845] RDX: 00007ffe05730013 RSI: 00000000000001ff RDI: 00007ffe05730010 [ 61.730056][ T6845] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.738022][ T6845] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 61.745986][ T6845] R13: 00007ffe05730000 R14: 000000000000f005 R15: 00007ffe05730010 [ 62.080434][ T21] tipc: TX() has been purged, node left! executing program [ 63.328258][ T6830] can: request_module (can-proto-0) failed. [ 64.044838][ T6830] can: request_module (can-proto-0) failed. [ 64.056608][ T6830] can: request_module (can-proto-0) failed.