[ 52.416237][ T6723] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6723 [ 52.425858][ T6723] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 52.432085][ T6723] CPU: 1 PID: 6723 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 52.432093][ T6723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.432098][ T6723] Call Trace: [ 52.432118][ T6723] dump_stack+0x188/0x20d [ 52.432139][ T6723] debug_smp_processor_id.cold+0x88/0x9b [ 52.463726][ T6723] ext4_mb_new_blocks+0xa77/0x3b30 [ 52.463754][ T6723] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.474360][ T6723] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.480077][ T6723] ext4_ext_map_blocks+0x2044/0x3410 [ 52.485371][ T6723] ? ext4_ext_release+0x10/0x10 [ 52.490241][ T6723] ? __down_timeout+0x2d0/0x2d0 [ 52.495093][ T6723] ? ext4_es_lookup_extent+0x41d/0xd30 [ 52.500572][ T6723] ext4_map_blocks+0x4cb/0x1640 [ 52.505449][ T6723] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.510643][ T6723] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.516183][ T6723] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.522169][ T6723] ? prandom_u32_state+0xe/0x170 [ 52.527119][ T6723] ? __brelse+0x84/0xa0 [ 52.531263][ T6723] ? __ext4_new_inode+0x144/0x57c0 [ 52.536358][ T6723] ext4_getblk+0xad/0x520 [ 52.540666][ T6723] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.546389][ T6723] ? ext4_free_inode+0x17e0/0x17e0 [ 52.551478][ T6723] ext4_bread+0x7c/0x380 [ 52.555698][ T6723] ? ext4_getblk+0x520/0x520 [ 52.560263][ T6723] ? dqget+0xff0/0xff0 [ 52.564318][ T6723] ext4_append+0x153/0x360 [ 52.568728][ T6723] ext4_mkdir+0x5e0/0xdf0 [ 52.573037][ T6723] ? ext4_rmdir+0xde0/0xde0 [ 52.577520][ T6723] ? security_inode_permission+0xc4/0xf0 [ 52.583133][ T6723] vfs_mkdir+0x419/0x690 [ 52.587356][ T6723] do_mkdirat+0x21e/0x280 [ 52.591664][ T6723] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.596496][ T6723] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.602459][ T6723] ? do_syscall_64+0x21/0x7d0 [ 52.607120][ T6723] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.613094][ T6723] do_syscall_64+0xf6/0x7d0 [ 52.617593][ T6723] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 52.623471][ T6723] RIP: 0033:0x7f0869954687 [ 52.627866][ T6723] 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 [ 52.647454][ T6723] RSP: 002b:00007ffc8f2b8448 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.655842][ T6723] RAX: ffffffffffffffda RBX: 000055d300beb985 RCX: 00007f0869954687 [ 52.663789][ T6723] RDX: 00007ffc8f2b8310 RSI: 00000000000001ed RDI: 000055d300beb985 [ 52.671747][ T6723] RBP: 00007f0869954680 R08: 0000000000000100 R09: 0000000000000000 [ 52.679733][ T6723] R10: 000055d300beb980 R11: 0000000000000246 R12: 00000000000001ed [ 52.687691][ T6723] R13: 00007ffc8f2b85d0 R14: 0000000000000000 R15: 0000000000000000 [ 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 Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.120' (ECDSA) to the list of known hosts. 2020/06/16 02:33:33 fuzzer started 2020/06/16 02:33:33 connecting to host at 10.128.0.26:45281 2020/06/16 02:33:33 checking machine... 2020/06/16 02:33:33 checking revisions... 2020/06/16 02:33:33 testing simple program... syzkaller login: [ 58.189929][ T6793] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6793 [ 58.199075][ T6793] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.205034][ T6793] CPU: 0 PID: 6793 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.212939][ T6793] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.222973][ T6793] Call Trace: [ 58.226250][ T6793] dump_stack+0x188/0x20d [ 58.230558][ T6793] debug_smp_processor_id.cold+0x88/0x9b [ 58.236167][ T6793] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.241272][ T6793] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.246705][ T6793] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.252412][ T6793] ext4_ext_map_blocks+0x2044/0x3410 [ 58.257678][ T6793] ? ext4_ext_release+0x10/0x10 [ 58.262516][ T6793] ? __down_timeout+0x2d0/0x2d0 [ 58.267342][ T6793] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.272778][ T6793] ext4_map_blocks+0x4cb/0x1640 [ 58.277620][ T6793] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.282795][ T6793] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.288317][ T6793] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.294274][ T6793] ? prandom_u32_state+0xe/0x170 [ 58.299189][ T6793] ? __brelse+0x84/0xa0 [ 58.304205][ T6793] ? __ext4_new_inode+0x144/0x57c0 [ 58.309296][ T6793] ext4_getblk+0xad/0x520 [ 58.313603][ T6793] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.319316][ T6793] ? ext4_free_inode+0x17e0/0x17e0 [ 58.324406][ T6793] ext4_bread+0x7c/0x380 [ 58.328627][ T6793] ? ext4_getblk+0x520/0x520 [ 58.333190][ T6793] ? dqget+0xff0/0xff0 [ 58.337241][ T6793] ext4_append+0x153/0x360 [ 58.341644][ T6793] ext4_mkdir+0x5e0/0xdf0 [ 58.345982][ T6793] ? ext4_rmdir+0xde0/0xde0 [ 58.350465][ T6793] ? security_inode_permission+0xc4/0xf0 [ 58.356092][ T6793] vfs_mkdir+0x419/0x690 [ 58.360329][ T6793] do_mkdirat+0x21e/0x280 [ 58.364652][ T6793] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.369529][ T6793] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.375514][ T6793] ? do_syscall_64+0x21/0x7d0 [ 58.380171][ T6793] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.389087][ T6793] do_syscall_64+0xf6/0x7d0 [ 58.393575][ T6793] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.399465][ T6793] RIP: 0033:0x4b02a0 [ 58.403359][ T6793] 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 [ 58.422945][ T6793] RSP: 002b:000000c0000d54b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.431348][ T6793] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 58.441427][ T6793] RDX: 00000000000001c0 RSI: 000000c000026ba0 RDI: ffffffffffffff9c [ 58.449383][ T6793] RBP: 000000c0000d5510 R08: 0000000000000000 R09: 0000000000000000 [ 58.457339][ T6793] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.465312][ T6793] R13: 000000000000005e R14: 000000000000005d R15: 0000000000000100 [ 58.494666][ T6808] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6808 [ 58.504187][ T6808] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.510086][ T6808] CPU: 1 PID: 6808 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.518325][ T6808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.528382][ T6808] Call Trace: [ 58.531712][ T6808] dump_stack+0x188/0x20d [ 58.536168][ T6808] debug_smp_processor_id.cold+0x88/0x9b [ 58.541797][ T6808] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.546943][ T6808] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.552399][ T6808] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.558123][ T6808] ext4_ext_map_blocks+0x2044/0x3410 [ 58.563414][ T6808] ? ext4_ext_release+0x10/0x10 [ 58.568262][ T6808] ? __down_timeout+0x2d0/0x2d0 [ 58.573091][ T6808] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.578533][ T6808] ext4_map_blocks+0x4cb/0x1640 [ 58.583379][ T6808] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.588572][ T6808] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.594116][ T6808] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.600073][ T6808] ? prandom_u32_state+0xe/0x170 [ 58.605010][ T6808] ? __brelse+0x84/0xa0 [ 58.609162][ T6808] ? __ext4_new_inode+0x144/0x57c0 [ 58.614775][ T6808] ext4_getblk+0xad/0x520 [ 58.619100][ T6808] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.624800][ T6808] ? ext4_free_inode+0x17e0/0x17e0 [ 58.629988][ T6808] ext4_bread+0x7c/0x380 [ 58.634225][ T6808] ? ext4_getblk+0x520/0x520 [ 58.638879][ T6808] ? dqget+0xff0/0xff0 [ 58.642956][ T6808] ext4_append+0x153/0x360 [ 58.647371][ T6808] ext4_mkdir+0x5e0/0xdf0 [ 58.651686][ T6808] ? ext4_rmdir+0xde0/0xde0 [ 58.656178][ T6808] ? security_inode_permission+0xc4/0xf0 [ 58.661970][ T6808] vfs_mkdir+0x419/0x690 [ 58.666214][ T6808] do_mkdirat+0x21e/0x280 [ 58.670544][ T6808] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.675376][ T6808] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.681355][ T6808] ? do_syscall_64+0x21/0x7d0 [ 58.686022][ T6808] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.692007][ T6808] do_syscall_64+0xf6/0x7d0 [ 58.696527][ T6808] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.702418][ T6808] RIP: 0033:0x45bed7 [ 58.706294][ T6808] 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 [ 58.725881][ T6808] RSP: 002b:00007ffe81e38fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.734283][ T6808] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bed7 [ 58.742233][ T6808] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffe81e39190 [ 58.750182][ T6808] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003740 [ 58.758172][ T6808] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.766155][ T6808] R13: 00007ffe81e39190 R14: 8421084210842109 R15: 00007ffe81e3919c [ 58.845523][ T6809] IPVS: ftp: loaded support on port[0] = 21 [ 58.884096][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6809 [ 58.893817][ T6809] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.899807][ T6809] CPU: 0 PID: 6809 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.908018][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.918051][ T6809] Call Trace: [ 58.921356][ T6809] dump_stack+0x188/0x20d [ 58.925836][ T6809] debug_smp_processor_id.cold+0x88/0x9b [ 58.931481][ T6809] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.936596][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.942488][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.948193][ T6809] ext4_ext_map_blocks+0x2044/0x3410 [ 58.953466][ T6809] ? ext4_ext_release+0x10/0x10 [ 58.958319][ T6809] ? __down_timeout+0x2d0/0x2d0 [ 58.963165][ T6809] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.968604][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 58.973453][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.978642][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.984165][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.990308][ T6809] ? prandom_u32_state+0xe/0x170 [ 58.995223][ T6809] ? __brelse+0x84/0xa0 [ 58.999356][ T6809] ? __ext4_new_inode+0x144/0x57c0 [ 59.004462][ T6809] ext4_getblk+0xad/0x520 [ 59.008769][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.014486][ T6809] ? ext4_free_inode+0x17e0/0x17e0 [ 59.019575][ T6809] ext4_bread+0x7c/0x380 [ 59.023794][ T6809] ? ext4_getblk+0x520/0x520 [ 59.028358][ T6809] ? dqget+0xff0/0xff0 [ 59.032406][ T6809] ext4_append+0x153/0x360 [ 59.036822][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 59.041586][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 59.046070][ T6809] ? security_inode_permission+0xc4/0xf0 [ 59.051680][ T6809] vfs_mkdir+0x419/0x690 [ 59.055905][ T6809] do_mkdirat+0x21e/0x280 [ 59.060211][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.065038][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.071014][ T6809] ? do_syscall_64+0x21/0x7d0 [ 59.075683][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.081659][ T6809] do_syscall_64+0xf6/0x7d0 [ 59.086159][ T6809] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.092026][ T6809] RIP: 0033:0x45bed7 [ 59.096001][ T6809] 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 [ 59.115581][ T6809] RSP: 002b:00007ffe81e38ea8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.124489][ T6809] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bed7 [ 59.132450][ T6809] RDX: 00007ffe81e38ef3 RSI: 00000000000001ff RDI: 00007ffe81e38ef0 [ 59.140508][ T6809] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.148457][ T6809] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185c0 [ 59.156421][ T6809] R13: 00007ffe81e38ee0 R14: 0000000000000000 R15: 00007ffe81e38ef0 [ 59.223009][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6809 [ 59.232578][ T6809] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.238603][ T6809] CPU: 1 PID: 6809 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.246843][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.256891][ T6809] Call Trace: [ 59.260353][ T6809] dump_stack+0x188/0x20d [ 59.264689][ T6809] debug_smp_processor_id.cold+0x88/0x9b [ 59.270326][ T6809] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.275468][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.280928][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.286640][ T6809] ext4_ext_map_blocks+0x2044/0x3410 [ 59.291928][ T6809] ? ext4_ext_release+0x10/0x10 [ 59.296790][ T6809] ? __down_timeout+0x2d0/0x2d0 [ 59.301646][ T6809] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.307093][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 59.311933][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.317134][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.322673][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.328692][ T6809] ? prandom_u32_state+0xe/0x170 [ 59.333627][ T6809] ? __brelse+0x84/0xa0 [ 59.337759][ T6809] ? __ext4_new_inode+0x144/0x57c0 [ 59.342847][ T6809] ext4_getblk+0xad/0x520 [ 59.347173][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.352884][ T6809] ? ext4_free_inode+0x17e0/0x17e0 [ 59.357975][ T6809] ext4_bread+0x7c/0x380 [ 59.362196][ T6809] ? ext4_getblk+0x520/0x520 [ 59.366778][ T6809] ? dqget+0xff0/0xff0 [ 59.370853][ T6809] ext4_append+0x153/0x360 [ 59.375264][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 59.379576][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 59.384060][ T6809] ? security_inode_permission+0xc4/0xf0 [ 59.389700][ T6809] vfs_mkdir+0x419/0x690 [ 59.393941][ T6809] do_mkdirat+0x21e/0x280 [ 59.398249][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.403074][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.409046][ T6809] ? do_syscall_64+0x21/0x7d0 [ 59.413717][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.419782][ T6809] do_syscall_64+0xf6/0x7d0 [ 59.424272][ T6809] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.430140][ T6809] RIP: 0033:0x45bed7 [ 59.434113][ T6809] 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 [ 59.454040][ T6809] RSP: 002b:00007ffe81e38ea8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.462495][ T6809] RAX: ffffffffffffffda RBX: 000000000000e74b RCX: 000000000045bed7 2020/06/16 02:33:34 building call list... [ 59.470446][ T6809] RDX: 00007ffe81e38ef3 RSI: 00000000000001ff RDI: 00007ffe81e38ef0 [ 59.478515][ T6809] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 59.486464][ T6809] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 59.494499][ T6809] R13: 00007ffe81e38ee0 R14: 000000000000e740 R15: 00007ffe81e38ef0 [ 59.773274][ T267] tipc: TX() has been purged, node left! executing program [ 61.114055][ T6795] can: request_module (can-proto-0) failed. [ 61.697685][ T6795] can: request_module (can-proto-0) failed. [ 61.709258][ T6795] can: request_module (can-proto-0) failed. [ 62.136279][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 62.145491][ T1156] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.151992][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.160482][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.170537][ T1156] Call Trace: [ 62.173865][ T1156] dump_stack+0x188/0x20d [ 62.178208][ T1156] debug_smp_processor_id.cold+0x88/0x9b [ 62.183849][ T1156] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.188968][ T1156] ? __kmalloc+0x62f/0x7a0 [ 62.193428][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.198900][ T1156] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.204629][ T1156] ext4_ext_map_blocks+0x2044/0x3410 [ 62.209948][ T1156] ? ext4_ext_release+0x10/0x10 [ 62.214991][ T1156] ? __down_timeout+0x2d0/0x2d0 [ 62.219836][ T1156] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.225290][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 62.230182][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.235404][ T1156] ? debug_smp_processor_id+0x2f/0x185 [ 62.240877][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.246411][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.252387][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.257840][ T1156] ext4_writepages+0x1ab7/0x3400 [ 62.262850][ T1156] ? mark_lock+0x30/0xdd0 [ 62.267175][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.272830][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.278567][ T1156] ? do_writepages+0xfa/0x2a0 [ 62.283239][ T1156] do_writepages+0xfa/0x2a0 [ 62.287827][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 62.293441][ T1156] ? do_raw_spin_lock+0x129/0x2e0 [ 62.298540][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 62.303908][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 62.308764][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.314563][ T1156] ? collapse_file+0x3575/0x4300 [ 62.319653][ T1156] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.325791][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.330968][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.336946][ T1156] collapse_file+0x357f/0x4300 [ 62.341713][ T1156] ? collapse_huge_page+0x4370/0x4370 [ 62.347062][ T1156] ? khugepaged+0x24fa/0x3f80 [ 62.352019][ T1156] khugepaged+0x3049/0x3f80 [ 62.356517][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.362152][ T1156] ? lock_downgrade+0x840/0x840 [ 62.366996][ T1156] ? finish_wait+0x260/0x260 [ 62.371565][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.377381][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.383351][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 62.388370][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.393994][ T1156] kthread+0x388/0x470 [ 62.398038][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.403738][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.409439][ T1156] ret_from_fork+0x24/0x30