[ 56.625663][ T6746] do_syscall_64+0x60/0xe0 [ 56.630080][ T6746] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 56.635950][ T6746] RIP: 0033:0x7fdeca354687 [ 56.640335][ T6746] Code: Bad RIP value. [ 56.644783][ T6746] RSP: 002b:00007fff772ce368 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 56.653625][ T6746] RAX: ffffffffffffffda RBX: 000056294cc2c985 RCX: 00007fdeca354687 [ 56.661596][ T6746] RDX: 00007fff772ce230 RSI: 00000000000001ed RDI: 000056294cc2c985 [ 56.669547][ T6746] RBP: 00007fdeca354680 R08: 0000000000000100 R09: 0000000000000000 [ 56.677797][ T6746] R10: 000056294cc2c980 R11: 0000000000000246 R12: 00000000000001ed [ 56.685845][ T6746] R13: 00007fff772ce4f0 R14: 0000000000000000 R15: 0000000000000000 Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 59.057126][ T26] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/26 [ 59.066175][ T26] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.072224][ T26] CPU: 0 PID: 26 Comm: kworker/u4:2 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 59.081528][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.091678][ T26] Workqueue: writeback wb_workfn (flush-8:0) [ 59.097900][ T26] Call Trace: [ 59.101276][ T26] dump_stack+0x18f/0x20d [ 59.105677][ T26] check_preemption_disabled+0x20d/0x220 [ 59.111325][ T26] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.116667][ T26] ? ext4_find_extent+0x81a/0xad0 [ 59.121681][ T26] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.127139][ T26] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.132920][ T26] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.138203][ T26] ? ext4_ext_release+0x10/0x10 [ 59.143046][ T26] ? down_write_killable+0x170/0x170 [ 59.148398][ T26] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.153864][ T26] ext4_map_blocks+0x4cb/0x1640 [ 59.158717][ T26] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.164193][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.169989][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.176344][ T26] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.182095][ T26] ext4_writepages+0x1a7b/0x33c0 [ 59.187115][ T26] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.192743][ T26] ? __lock_acquire+0x2224/0x48b0 [ 59.197770][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.203775][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.209743][ T26] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.215382][ T26] ? do_writepages+0xfa/0x2a0 [ 59.220142][ T26] do_writepages+0xfa/0x2a0 [ 59.224648][ T26] ? page_writeback_cpu_online+0x10/0x10 [ 59.230289][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.235840][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.241851][ T26] ? lock_downgrade+0x840/0x840 [ 59.246703][ T26] __writeback_single_inode+0x12a/0x13d0 [ 59.252456][ T26] ? _raw_spin_unlock+0x24/0x40 [ 59.257290][ T26] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 59.263252][ T26] writeback_sb_inodes+0x515/0xdc0 [ 59.268350][ T26] ? __writeback_single_inode+0x13d0/0x13d0 [ 59.274259][ T26] __writeback_inodes_wb+0xc3/0x250 [ 59.279453][ T26] wb_writeback+0x8db/0xd50 [ 59.283975][ T26] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 59.290287][ T26] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 59.296189][ T26] ? cpumask_next+0x3c/0x40 [ 59.300676][ T26] ? get_nr_dirty_inodes+0xd6/0x130 [ 59.306823][ T26] wb_workfn+0xab3/0x1090 [ 59.311194][ T26] ? inode_wait_for_writeback+0x30/0x30 [ 59.317275][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.323202][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.329167][ T26] process_one_work+0x965/0x1690 [ 59.334113][ T26] ? lock_release+0x800/0x800 [ 59.338898][ T26] ? pwq_dec_nr_in_flight+0x310/0x310 [ 59.344259][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 59.349187][ T26] worker_thread+0x96/0xe10 [ 59.353680][ T26] ? process_one_work+0x1690/0x1690 [ 59.358947][ T26] kthread+0x3b5/0x4a0 [ 59.362997][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.369138][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.374890][ T26] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.10.51' (ECDSA) to the list of known hosts. 2020/06/05 18:20:46 fuzzer started 2020/06/05 18:20:47 connecting to host at 10.128.0.26:36597 2020/06/05 18:20:47 checking machine... 2020/06/05 18:20:47 checking revisions... 2020/06/05 18:20:47 testing simple program... [ 62.494362][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6815 [ 62.505105][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.511694][ T6815] CPU: 1 PID: 6815 Comm: syz-fuzzer Not tainted 5.7.0-next-20200605-syzkaller #0 [ 62.521764][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.532779][ T6815] Call Trace: [ 62.536416][ T6815] dump_stack+0x18f/0x20d [ 62.541009][ T6815] check_preemption_disabled+0x20d/0x220 [ 62.546703][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.553255][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.559897][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.567029][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.572442][ T6815] ? ext4_ext_release+0x10/0x10 [ 62.577741][ T6815] ? down_write_killable+0x170/0x170 [ 62.584342][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.590049][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 62.594902][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.600087][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.605928][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.612107][ T6815] ? prandom_u32_state+0xe/0x170 [ 62.619574][ T6815] ? __brelse+0x84/0xa0 [ 62.623751][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 62.629343][ T6815] ext4_getblk+0xad/0x520 [ 62.633909][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.639750][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 62.645064][ T6815] ext4_bread+0x7c/0x380 [ 62.649951][ T6815] ? ext4_getblk+0x520/0x520 [ 62.655017][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 62.661801][ T6815] ext4_append+0x153/0x360 [ 62.666756][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 62.671342][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 62.676508][ T6815] ? security_inode_permission+0xc4/0xf0 [ 62.682359][ T6815] vfs_mkdir+0x419/0x690 [ 62.686868][ T6815] do_mkdirat+0x21e/0x280 [ 62.691210][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.696212][ T6815] ? do_syscall_64+0x1c/0xe0 [ 62.700983][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.708122][ T6815] do_syscall_64+0x60/0xe0 [ 62.713074][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.719070][ T6815] RIP: 0033:0x4b02a0 [ 62.723067][ T6815] Code: Bad RIP value. [ 62.727487][ T6815] RSP: 002b:000000c0001014b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 62.736126][ T6815] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 62.745015][ T6815] RDX: 00000000000001c0 RSI: 000000c0000d29e0 RDI: ffffffffffffff9c [ 62.753363][ T6815] RBP: 000000c000101510 R08: 0000000000000000 R09: 0000000000000000 [ 62.761441][ T6815] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 62.769582][ T6815] R13: 0000000000000050 R14: 000000000000004f R15: 0000000000000100 [ 62.788926][ T6827] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6827 [ 62.798632][ T6827] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.804868][ T6827] CPU: 0 PID: 6827 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 62.815206][ T6827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.825827][ T6827] Call Trace: [ 62.829149][ T6827] dump_stack+0x18f/0x20d [ 62.833522][ T6827] check_preemption_disabled+0x20d/0x220 [ 62.839268][ T6827] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.844567][ T6827] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.850185][ T6827] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.855908][ T6827] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.861664][ T6827] ? ext4_ext_release+0x10/0x10 [ 62.866967][ T6827] ? down_write_killable+0x170/0x170 [ 62.872236][ T6827] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.877691][ T6827] ext4_map_blocks+0x4cb/0x1640 [ 62.882542][ T6827] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.887823][ T6827] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.893647][ T6827] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.899857][ T6827] ? prandom_u32_state+0xe/0x170 [ 62.904799][ T6827] ? __brelse+0x84/0xa0 [ 62.909588][ T6827] ? __ext4_new_inode+0x144/0x55e0 [ 62.914682][ T6827] ext4_getblk+0xad/0x520 [ 62.919009][ T6827] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.924725][ T6827] ? ext4_free_inode+0x1700/0x1700 [ 62.929838][ T6827] ext4_bread+0x7c/0x380 [ 62.934185][ T6827] ? ext4_getblk+0x520/0x520 [ 62.938768][ T6827] ? dquot_get_next_dqblk+0x180/0x180 [ 62.944134][ T6827] ext4_append+0x153/0x360 [ 62.948541][ T6827] ext4_mkdir+0x5e0/0xdf0 [ 62.952870][ T6827] ? ext4_rmdir+0xde0/0xde0 [ 62.957372][ T6827] ? security_inode_permission+0xc4/0xf0 [ 62.962986][ T6827] vfs_mkdir+0x419/0x690 [ 62.967209][ T6827] do_mkdirat+0x21e/0x280 [ 62.971521][ T6827] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.976518][ T6827] ? do_syscall_64+0x1c/0xe0 [ 62.981129][ T6827] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.987093][ T6827] do_syscall_64+0x60/0xe0 [ 62.991501][ T6827] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.997399][ T6827] RIP: 0033:0x45bee7 [ 63.001267][ T6827] Code: Bad RIP value. [ 63.005306][ T6827] RSP: 002b:00007ffd9eeeb698 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 63.013690][ T6827] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 63.021649][ T6827] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd9eeeb870 [ 63.029607][ T6827] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000032c0 [ 63.037652][ T6827] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 63.045796][ T6827] R13: 00007ffd9eeeb870 R14: 8421084210842109 R15: 00007ffd9eeeb87c [ 63.126991][ T6828] IPVS: ftp: loaded support on port[0] = 21 [ 63.164371][ T6828] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6828 [ 63.173863][ T6828] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.179994][ T6828] CPU: 1 PID: 6828 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 63.189486][ T6828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.199520][ T6828] Call Trace: [ 63.202791][ T6828] dump_stack+0x18f/0x20d [ 63.207102][ T6828] check_preemption_disabled+0x20d/0x220 [ 63.212898][ T6828] ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.217992][ T6828] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.223494][ T6828] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.229276][ T6828] ext4_ext_map_blocks+0x201b/0x33e0 [ 63.234572][ T6828] ? ext4_ext_release+0x10/0x10 [ 63.239432][ T6828] ? down_write_killable+0x170/0x170 [ 63.244696][ T6828] ? ext4_es_lookup_extent+0x41d/0xd10 [ 63.250133][ T6828] ext4_map_blocks+0x4cb/0x1640 [ 63.255052][ T6828] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.260239][ T6828] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.265782][ T6828] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.271752][ T6828] ? prandom_u32_state+0xe/0x170 [ 63.276670][ T6828] ? __brelse+0x84/0xa0 [ 63.280802][ T6828] ? __ext4_new_inode+0x144/0x55e0 [ 63.285893][ T6828] ext4_getblk+0xad/0x520 [ 63.290210][ T6828] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 63.295909][ T6828] ? ext4_free_inode+0x1700/0x1700 [ 63.300994][ T6828] ext4_bread+0x7c/0x380 [ 63.305228][ T6828] ? ext4_getblk+0x520/0x520 [ 63.309793][ T6828] ? dquot_get_next_dqblk+0x180/0x180 [ 63.315145][ T6828] ext4_append+0x153/0x360 [ 63.319546][ T6828] ext4_mkdir+0x5e0/0xdf0 [ 63.323869][ T6828] ? ext4_rmdir+0xde0/0xde0 [ 63.328455][ T6828] ? security_inode_permission+0xc4/0xf0 [ 63.334119][ T6828] vfs_mkdir+0x419/0x690 [ 63.338427][ T6828] do_mkdirat+0x21e/0x280 [ 63.342820][ T6828] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.347662][ T6828] ? do_syscall_64+0x1c/0xe0 [ 63.352227][ T6828] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.358205][ T6828] do_syscall_64+0x60/0xe0 [ 63.362614][ T6828] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.368626][ T6828] RIP: 0033:0x45bee7 [ 63.372497][ T6828] Code: Bad RIP value. [ 63.376555][ T6828] RSP: 002b:00007ffd9eeeb588 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 63.384955][ T6828] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 63.392902][ T6828] RDX: 00007ffd9eeeb5d3 RSI: 00000000000001ff RDI: 00007ffd9eeeb5d0 [ 63.400866][ T6828] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 63.408846][ T6828] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 63.416808][ T6828] R13: 00007ffd9eeeb5c0 R14: 0000000000000000 R15: 00007ffd9eeeb5d0 [ 63.466548][ T6828] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6828 [ 63.476034][ T6828] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.481955][ T6828] CPU: 0 PID: 6828 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 63.491404][ T6828] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.501487][ T6828] Call Trace: [ 63.504799][ T6828] dump_stack+0x18f/0x20d [ 63.509147][ T6828] check_preemption_disabled+0x20d/0x220 [ 63.514814][ T6828] ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.519972][ T6828] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.525429][ T6828] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.531147][ T6828] ext4_ext_map_blocks+0x201b/0x33e0 [ 63.536420][ T6828] ? ext4_ext_release+0x10/0x10 [ 63.541269][ T6828] ? down_write_killable+0x170/0x170 [ 63.546543][ T6828] ? ext4_es_lookup_extent+0x41d/0xd10 [ 63.551982][ T6828] ext4_map_blocks+0x4cb/0x1640 [ 63.556818][ T6828] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.561991][ T6828] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.567524][ T6828] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.573568][ T6828] ? prandom_u32_state+0xe/0x170 [ 63.578515][ T6828] ? __brelse+0x84/0xa0 [ 63.582656][ T6828] ? __ext4_new_inode+0x144/0x55e0 [ 63.587761][ T6828] ext4_getblk+0xad/0x520 [ 63.592100][ T6828] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 63.597804][ T6828] ? ext4_free_inode+0x1700/0x1700 [ 63.602907][ T6828] ext4_bread+0x7c/0x380 [ 63.607126][ T6828] ? ext4_getblk+0x520/0x520 [ 63.611692][ T6828] ? dquot_get_next_dqblk+0x180/0x180 [ 63.617097][ T6828] ext4_append+0x153/0x360 [ 63.621504][ T6828] ext4_mkdir+0x5e0/0xdf0 [ 63.625892][ T6828] ? ext4_rmdir+0xde0/0xde0 [ 63.630392][ T6828] ? security_inode_permission+0xc4/0xf0 [ 63.636020][ T6828] vfs_mkdir+0x419/0x690 [ 63.640257][ T6828] do_mkdirat+0x21e/0x280 [ 63.644565][ T6828] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.649401][ T6828] ? do_syscall_64+0x1c/0xe0 [ 63.653970][ T6828] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.659991][ T6828] do_syscall_64+0x60/0xe0 [ 63.664399][ T6828] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.670297][ T6828] RIP: 0033:0x45bee7 [ 63.674226][ T6828] Code: Bad RIP value. [ 63.678568][ T6828] RSP: 002b:00007ffd9eeeb588 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 63.687024][ T6828] RAX: ffffffffffffffda RBX: 000000000000f7dc RCX: 000000000045bee7 [ 63.695866][ T6828] RDX: 00007ffd9eeeb5d3 RSI: 00000000000001ff RDI: 00007ffd9eeeb5d0 [ 63.704117][ T6828] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/05 18:20:48 building call list... [ 63.712194][ T6828] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 63.720263][ T6828] R13: 00007ffd9eeeb5c0 R14: 000000000000f7d3 R15: 00007ffd9eeeb5d0 [ 64.016757][ T21] tipc: TX() has been purged, node left! executing program [ 65.522272][ T6854] can: request_module (can-proto-0) failed. [ 66.019324][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 66.029413][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.036244][ T1153] CPU: 1 PID: 1153 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 66.046396][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.056845][ T1153] Call Trace: [ 66.060234][ T1153] dump_stack+0x18f/0x20d [ 66.064697][ T1153] check_preemption_disabled+0x20d/0x220 [ 66.070424][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.076176][ T1153] ? ext4_find_extent+0x81a/0xad0 [ 66.081249][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 66.087616][ T1153] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 66.093630][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 66.098922][ T1153] ? ext4_ext_release+0x10/0x10 [ 66.103760][ T1153] ? down_write_killable+0x170/0x170 [ 66.109440][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 66.115362][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 66.121871][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 66.127076][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.132622][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.139310][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 66.144852][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 66.150797][ T1153] ? lock_release+0x710/0x800 [ 66.156346][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.162154][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.167888][ T1153] ? do_writepages+0xfa/0x2a0 [ 66.172641][ T1153] do_writepages+0xfa/0x2a0 [ 66.177148][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 66.183821][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 66.189409][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 66.194812][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 66.199676][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 66.205581][ T1153] ? collapse_file+0x35a2/0x4330 [ 66.210505][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 66.216623][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 66.221825][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.227995][ T1153] collapse_file+0x35ac/0x4330 [ 66.233013][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 66.238643][ T1153] ? khugepaged+0x2506/0x3fc0 [ 66.243326][ T1153] ? xas_find+0x31a/0x880 [ 66.247657][ T1153] ? check_preemption_disabled+0x38/0x220 [ 66.253365][ T1153] khugepaged+0x3041/0x3fc0 [ 66.258046][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 66.263725][ T1153] ? lock_downgrade+0x840/0x840 [ 66.268587][ T1153] ? finish_wait+0x260/0x260 [ 66.273294][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 66.279370][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.285366][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 66.290470][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 66.296518][ T1153] kthread+0x3b5/0x4a0 [ 66.300871][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 66.307728][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 66.313604][ T1153] ret_from_fork+0x1f/0x30 [ 66.398200][ T6854] can: request_module (can-proto-0) failed. [ 66.410439][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 66.414431][ T6854] can: request_module (can-proto-0) failed. [ 66.420015][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.432129][ T1153] CPU: 0 PID: 1153 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 66.441354][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.451418][ T1153] Call Trace: [ 66.454718][ T1153] dump_stack+0x18f/0x20d [ 66.459065][ T1153] check_preemption_disabled+0x20d/0x220 [ 66.464734][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.469866][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 66.475341][ T1153] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 66.481503][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 66.486895][ T1153] ? ext4_ext_release+0x10/0x10 [ 66.491824][ T1153] ? down_write_killable+0x170/0x170 [ 66.497141][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 66.502613][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 66.507494][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 66.512713][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.518265][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.524251][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 66.529721][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 66.534672][ T1153] ? lock_release+0x710/0x800 [ 66.539371][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.545053][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.550702][ T1153] ? do_writepages+0xfa/0x2a0 [ 66.555386][ T1153] do_writepages+0xfa/0x2a0 [ 66.559903][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 66.565542][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 66.570573][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 66.575799][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 66.580665][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 66.586391][ T1153] ? collapse_file+0x35a2/0x4330 [ 66.591336][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 66.597426][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 66.602722][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.608722][ T1153] collapse_file+0x35ac/0x4330 [ 66.613518][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 66.619083][ T1153] ? khugepaged+0x2506/0x3fc0 [ 66.623805][ T1153] ? xas_find+0x31a/0x880 [ 66.628182][ T1153] ? check_preemption_disabled+0x38/0x220 [ 66.633917][ T1153] khugepaged+0x3041/0x3fc0 [ 66.638842][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 66.644489][ T1153] ? lock_downgrade+0x840/0x840 [ 66.649349][ T1153] ? finish_wait+0x260/0x260 [ 66.653951][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 66.659798][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.665797][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 66.670833][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 66.676503][ T1153] kthread+0x3b5/0x4a0 [ 66.680578][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 66.686656][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 66.692383][ T1153] ret_from_fork+0x1f/0x30 [ 66.737237][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 66.746404][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.752310][ T1153] CPU: 0 PID: 1153 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 66.761404][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.761409][ T1153] Call Trace: [ 66.761429][ T1153] dump_stack+0x18f/0x20d [ 66.761460][ T1153] check_preemption_disabled+0x20d/0x220 [ 66.785015][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.790120][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 66.795561][ T1153] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 66.801698][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 66.806998][ T1153] ? ext4_ext_release+0x10/0x10 [ 66.811832][ T1153] ? down_write_killable+0x170/0x170 [ 66.817107][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 66.822890][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 66.827731][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 66.832922][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.838458][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.844597][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 66.850033][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 66.854950][ T1153] ? lock_release+0x710/0x800 [ 66.859620][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.865272][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 66.870882][ T1153] ? do_writepages+0xfa/0x2a0 [ 66.875543][ T1153] do_writepages+0xfa/0x2a0 [ 66.880092][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 66.885716][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 66.890739][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 66.895921][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 66.900756][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 66.906473][ T1153] ? collapse_file+0x35a2/0x4330 [ 66.911490][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 66.917542][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 66.922722][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.928684][ T1153] collapse_file+0x35ac/0x4330 [ 66.933464][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 66.938839][ T1153] ? khugepaged+0x2506/0x3fc0 [ 66.943517][ T1153] ? xas_find+0x31a/0x880 [ 66.947846][ T1153] ? check_preemption_disabled+0x38/0x220 [ 66.953559][ T1153] khugepaged+0x3041/0x3fc0 [ 66.958056][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 66.963689][ T1153] ? lock_downgrade+0x840/0x840 [ 66.968567][ T1153] ? finish_wait+0x260/0x260 [ 66.973151][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 66.978959][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.984942][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 66.989945][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 66.995555][ T1153] kthread+0x3b5/0x4a0 [ 66.999600][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.005293][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.010989][ T1153] ret_from_fork+0x1f/0x30