Starting Load/Save RF Kill Switch Status... [ 53.665688][ T6728] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6728 [ 53.676217][ T6728] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 53.682495][ T6728] CPU: 0 PID: 6728 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 53.690879][ T6728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.700911][ T6728] Call Trace: [ 53.704229][ T6728] dump_stack+0x188/0x20d [ 53.708604][ T6728] debug_smp_processor_id.cold+0x88/0x9b [ 53.714350][ T6728] ext4_mb_new_blocks+0xa77/0x3b30 [ 53.719509][ T6728] ? ext4_ext_search_right+0x2ca/0xb20 [ 53.724950][ T6728] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 53.730707][ T6728] ext4_ext_map_blocks+0x2044/0x3410 [ 53.735974][ T6728] ? ext4_ext_release+0x10/0x10 [ 53.740810][ T6728] ? __down_timeout+0x2d0/0x2d0 [ 53.745672][ T6728] ? ext4_es_lookup_extent+0x41d/0xd30 [ 53.751117][ T6728] ext4_map_blocks+0x4cb/0x1640 [ 53.755950][ T6728] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 53.761125][ T6728] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.766659][ T6728] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.772704][ T6728] ? prandom_u32_state+0xe/0x170 [ 53.777619][ T6728] ? __brelse+0x84/0xa0 [ 53.781752][ T6728] ? __ext4_new_inode+0x144/0x57c0 [ 53.786841][ T6728] ext4_getblk+0xad/0x520 [ 53.791153][ T6728] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 53.796866][ T6728] ? ext4_free_inode+0x17e0/0x17e0 [ 53.801970][ T6728] ext4_bread+0x7c/0x380 [ 53.806188][ T6728] ? ext4_getblk+0x520/0x520 [ 53.810773][ T6728] ? dqget+0xff0/0xff0 [ 53.814820][ T6728] ext4_append+0x153/0x360 [ 53.819213][ T6728] ext4_mkdir+0x5e0/0xdf0 [ 53.823537][ T6728] ? ext4_rmdir+0xde0/0xde0 [ 53.828019][ T6728] ? security_inode_permission+0xc4/0xf0 [ 53.833635][ T6728] vfs_mkdir+0x419/0x690 [ 53.837858][ T6728] do_mkdirat+0x21e/0x280 [ 53.842167][ T6728] ? __ia32_sys_mknod+0xb0/0xb0 [ 53.847020][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.852978][ T6728] ? do_syscall_64+0x21/0x7d0 [ 53.857630][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.863589][ T6728] do_syscall_64+0xf6/0x7d0 [ 53.868075][ T6728] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 53.873947][ T6728] RIP: 0033:0x7f52f3769687 [ 53.878338][ T6728] 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 [ 53.897929][ T6728] RSP: 002b:00007ffeb9ada568 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.906336][ T6728] RAX: ffffffffffffffda RBX: 000056115b6d8985 RCX: 00007f52f3769687 [ 53.914287][ T6728] RDX: 00007ffeb9ada430 RSI: 00000000000001ed RDI: 000056115b6d8985 [ 53.922234][ T6728] RBP: 00007f52f3769680 R08: 0000000000000100 R09: 0000000000000000 [ 53.930181][ T6728] R10: 000056115b6d8980 R11: 0000000000000246 R12: 00000000000001ed [ 53.938126][ T6728] R13: 00007ffeb9ada6f0 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. [ 54.887145][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 54.896227][ T21] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 54.902441][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 54.910407][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.920452][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 54.926416][ T21] Call Trace: [ 54.929701][ T21] dump_stack+0x188/0x20d [ 54.934019][ T21] debug_smp_processor_id.cold+0x88/0x9b [ 54.939630][ T21] ext4_mb_new_blocks+0xa77/0x3b30 [ 54.944716][ T21] ? __kmalloc+0x62f/0x7a0 [ 54.949133][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.954580][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.960285][ T21] ext4_ext_map_blocks+0x2044/0x3410 [ 54.965547][ T21] ? ext4_ext_release+0x10/0x10 [ 54.970385][ T21] ? __down_timeout+0x2d0/0x2d0 [ 54.975219][ T21] ? ext4_es_lookup_extent+0x41d/0xd30 [ 54.980651][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 54.986101][ T21] ext4_map_blocks+0x4cb/0x1640 [ 54.990947][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.996120][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 55.001562][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.007083][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.013038][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.018482][ T21] ext4_writepages+0x1ab7/0x3400 [ 55.023409][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 55.029018][ T21] ? __lock_acquire+0x2224/0x48a0 [ 55.034028][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.039991][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.045961][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 55.051570][ T21] ? do_writepages+0xfa/0x2a0 [ 55.056235][ T21] do_writepages+0xfa/0x2a0 [ 55.060717][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 55.066322][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 55.071762][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.077284][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.083257][ T21] ? lock_downgrade+0x840/0x840 [ 55.088101][ T21] __writeback_single_inode+0x12a/0x1410 [ 55.093718][ T21] ? _raw_spin_unlock+0x24/0x40 [ 55.098543][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.104499][ T21] writeback_sb_inodes+0x515/0xdd0 [ 55.109603][ T21] ? __writeback_single_inode+0x1410/0x1410 [ 55.115483][ T21] __writeback_inodes_wb+0xc3/0x250 [ 55.120670][ T21] wb_writeback+0x910/0xd90 [ 55.125155][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.131475][ T21] ? cpumask_next+0x3c/0x40 [ 55.135965][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.141153][ T21] wb_workfn+0x9d8/0x10d0 [ 55.145480][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 55.151010][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 55.156449][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.161970][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.167934][ T21] process_one_work+0x965/0x16a0 [ 55.172852][ T21] ? lock_release+0x800/0x800 [ 55.177515][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.182871][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 55.187789][ T21] worker_thread+0x96/0xe10 [ 55.192274][ T21] ? process_one_work+0x16a0/0x16a0 [ 55.197450][ T21] kthread+0x388/0x470 [ 55.201503][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.207208][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.212904][ T21] ret_from_fork+0x24/0x30 Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.49' (ECDSA) to the list of known hosts. 2020/06/11 12:18:42 fuzzer started 2020/06/11 12:18:42 connecting to host at 10.128.0.26:43361 2020/06/11 12:18:42 checking machine... 2020/06/11 12:18:42 checking revisions... 2020/06/11 12:18:42 testing simple program... syzkaller login: [ 59.172034][ T6791] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6791 [ 59.181192][ T6791] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.187166][ T6791] CPU: 1 PID: 6791 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.195093][ T6791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.205130][ T6791] Call Trace: [ 59.208448][ T6791] dump_stack+0x188/0x20d [ 59.212763][ T6791] debug_smp_processor_id.cold+0x88/0x9b [ 59.218378][ T6791] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.223486][ T6791] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.228922][ T6791] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.234638][ T6791] ext4_ext_map_blocks+0x2044/0x3410 [ 59.239999][ T6791] ? ext4_ext_release+0x10/0x10 [ 59.244849][ T6791] ? __down_timeout+0x2d0/0x2d0 [ 59.249686][ T6791] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.255124][ T6791] ext4_map_blocks+0x4cb/0x1640 [ 59.259960][ T6791] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.265149][ T6791] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.270678][ T6791] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.276645][ T6791] ? prandom_u32_state+0xe/0x170 [ 59.281569][ T6791] ? __brelse+0x84/0xa0 [ 59.285702][ T6791] ? __ext4_new_inode+0x144/0x57c0 [ 59.290820][ T6791] ext4_getblk+0xad/0x520 [ 59.295146][ T6791] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.300888][ T6791] ? ext4_free_inode+0x17e0/0x17e0 [ 59.305980][ T6791] ext4_bread+0x7c/0x380 [ 59.310247][ T6791] ? ext4_getblk+0x520/0x520 [ 59.314852][ T6791] ? dqget+0xff0/0xff0 [ 59.318924][ T6791] ext4_append+0x153/0x360 [ 59.323396][ T6791] ext4_mkdir+0x5e0/0xdf0 [ 59.327712][ T6791] ? ext4_rmdir+0xde0/0xde0 [ 59.332196][ T6791] ? security_inode_permission+0xc4/0xf0 [ 59.337859][ T6791] vfs_mkdir+0x419/0x690 [ 59.342082][ T6791] do_mkdirat+0x21e/0x280 [ 59.346398][ T6791] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.351225][ T6791] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.357184][ T6791] ? do_syscall_64+0x21/0x7d0 [ 59.361836][ T6791] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.367804][ T6791] do_syscall_64+0xf6/0x7d0 [ 59.372287][ T6791] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.378158][ T6791] RIP: 0033:0x4b02a0 [ 59.382032][ T6791] 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 [ 59.401611][ T6791] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.409999][ T6791] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.417946][ T6791] RDX: 00000000000001c0 RSI: 000000c0000d0a20 RDI: ffffffffffffff9c [ 59.425902][ T6791] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 59.433857][ T6791] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.441804][ T6791] R13: 0000000000000052 R14: 0000000000000051 R15: 0000000000000100 [ 59.466557][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6809 [ 59.475988][ T6809] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.481997][ T6809] CPU: 0 PID: 6809 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.490351][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.500390][ T6809] Call Trace: [ 59.503680][ T6809] dump_stack+0x188/0x20d [ 59.508005][ T6809] debug_smp_processor_id.cold+0x88/0x9b [ 59.513648][ T6809] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.519459][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.524960][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.530706][ T6809] ext4_ext_map_blocks+0x2044/0x3410 [ 59.535976][ T6809] ? ext4_ext_release+0x10/0x10 [ 59.540816][ T6809] ? __down_timeout+0x2d0/0x2d0 [ 59.545652][ T6809] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.551097][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 59.555927][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.561100][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.566647][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.572614][ T6809] ? prandom_u32_state+0xe/0x170 [ 59.577535][ T6809] ? __brelse+0x84/0xa0 [ 59.581669][ T6809] ? __ext4_new_inode+0x144/0x57c0 [ 59.586771][ T6809] ext4_getblk+0xad/0x520 [ 59.591165][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.596875][ T6809] ? ext4_free_inode+0x17e0/0x17e0 [ 59.601964][ T6809] ext4_bread+0x7c/0x380 [ 59.606182][ T6809] ? ext4_getblk+0x520/0x520 [ 59.610748][ T6809] ? dqget+0xff0/0xff0 [ 59.614809][ T6809] ext4_append+0x153/0x360 [ 59.619218][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 59.623524][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 59.628006][ T6809] ? security_inode_permission+0xc4/0xf0 [ 59.633627][ T6809] vfs_mkdir+0x419/0x690 [ 59.637850][ T6809] do_mkdirat+0x21e/0x280 [ 59.642153][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.646981][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.652937][ T6809] ? do_syscall_64+0x21/0x7d0 [ 59.657589][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.663557][ T6809] do_syscall_64+0xf6/0x7d0 [ 59.668040][ T6809] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.673915][ T6809] RIP: 0033:0x45bee7 [ 59.677789][ 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 [ 59.697472][ T6809] RSP: 002b:00007ffc28107438 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.705858][ T6809] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.713803][ T6809] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffc28107610 [ 59.721749][ T6809] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002bc0 [ 59.729708][ T6809] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.738527][ T6809] R13: 00007ffc28107610 R14: 8421084210842109 R15: 00007ffc2810761c [ 59.823614][ T6810] IPVS: ftp: loaded support on port[0] = 21 [ 59.859751][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 59.869394][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.875368][ T6810] CPU: 1 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.883601][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.893733][ T6810] Call Trace: [ 59.897009][ T6810] dump_stack+0x188/0x20d [ 59.901319][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 59.906931][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.912111][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.917568][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.923265][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 59.928543][ T6810] ? ext4_ext_release+0x10/0x10 [ 59.933383][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 59.938232][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.943673][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 59.948503][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.953676][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.959221][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.965189][ T6810] ? prandom_u32_state+0xe/0x170 [ 59.970105][ T6810] ? __brelse+0x84/0xa0 [ 59.974239][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 59.979350][ T6810] ext4_getblk+0xad/0x520 [ 59.983659][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.989364][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 59.994450][ T6810] ext4_bread+0x7c/0x380 [ 59.998686][ T6810] ? ext4_getblk+0x520/0x520 [ 60.003248][ T6810] ? dqget+0xff0/0xff0 [ 60.007295][ T6810] ext4_append+0x153/0x360 [ 60.011702][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 60.016011][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 60.020508][ T6810] ? security_inode_permission+0xc4/0xf0 [ 60.026118][ T6810] vfs_mkdir+0x419/0x690 [ 60.030338][ T6810] do_mkdirat+0x21e/0x280 [ 60.034659][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.039488][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.045461][ T6810] ? do_syscall_64+0x21/0x7d0 [ 60.050127][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.056097][ T6810] do_syscall_64+0xf6/0x7d0 [ 60.060605][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.066477][ T6810] RIP: 0033:0x45bee7 [ 60.070371][ T6810] 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 [ 60.089950][ T6810] RSP: 002b:00007ffc28107328 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.098440][ T6810] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.106388][ T6810] RDX: 00007ffc28107373 RSI: 00000000000001ff RDI: 00007ffc28107370 [ 60.114344][ T6810] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.122306][ T6810] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 60.130264][ T6810] R13: 00007ffc28107360 R14: 0000000000000000 R15: 00007ffc28107370 [ 60.185980][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 60.195583][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.201735][ T6810] CPU: 0 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.209975][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.220041][ T6810] Call Trace: [ 60.223338][ T6810] dump_stack+0x188/0x20d [ 60.227680][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 60.233319][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.238451][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.243917][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.249635][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 60.254911][ T6810] ? ext4_ext_release+0x10/0x10 [ 60.259760][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 60.264599][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.270065][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 60.274895][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.280081][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.285600][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.291553][ T6810] ? prandom_u32_state+0xe/0x170 [ 60.296478][ T6810] ? __brelse+0x84/0xa0 [ 60.300609][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 60.305696][ T6810] ext4_getblk+0xad/0x520 [ 60.310004][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.315718][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 60.320808][ T6810] ext4_bread+0x7c/0x380 [ 60.325058][ T6810] ? ext4_getblk+0x520/0x520 [ 60.329625][ T6810] ? dqget+0xff0/0xff0 [ 60.333681][ T6810] ext4_append+0x153/0x360 [ 60.338099][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 60.342412][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 60.346897][ T6810] ? security_inode_permission+0xc4/0xf0 [ 60.352513][ T6810] vfs_mkdir+0x419/0x690 [ 60.356756][ T6810] do_mkdirat+0x21e/0x280 [ 60.361078][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.365909][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.371867][ T6810] ? do_syscall_64+0x21/0x7d0 [ 60.376531][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.382487][ T6810] do_syscall_64+0xf6/0x7d0 [ 60.386969][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.392853][ T6810] RIP: 0033:0x45bee7 [ 60.396730][ T6810] 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 [ 60.416322][ T6810] RSP: 002b:00007ffc28107328 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.424713][ T6810] RAX: ffffffffffffffda RBX: 000000000000eb0e RCX: 000000000045bee7 [ 60.432660][ T6810] RDX: 00007ffc28107373 RSI: 00000000000001ff RDI: 00007ffc28107370 [ 60.440616][ T6810] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.448577][ T6810] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 60.456523][ T6810] R13: 00007ffc28107360 R14: 000000000000eb06 R15: 00007ffc28107370 [ 60.477307][ T24] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/24 [ 60.486561][ T24] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.492469][ T24] CPU: 1 PID: 24 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 60.500358][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.510428][ T24] Workqueue: writeback wb_workfn (flush-8:0) [ 60.516491][ T24] Call Trace: [ 60.519785][ T24] dump_stack+0x188/0x20d [ 60.524120][ T24] debug_smp_processor_id.cold+0x88/0x9b [ 60.529753][ T24] ext4_mb_new_blocks+0xa77/0x3b30 2020/06/11 12:18:44 building call list... [ 60.534859][ T24] ? __kmalloc+0x62f/0x7a0 [ 60.539292][ T24] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.544755][ T24] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.550480][ T24] ext4_ext_map_blocks+0x2044/0x3410 [ 60.555782][ T24] ? ext4_ext_release+0x10/0x10 [ 60.560652][ T24] ? __down_timeout+0x2d0/0x2d0 [ 60.565508][ T24] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.570979][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 60.576448][ T24] ext4_map_blocks+0x4cb/0x1640 [ 60.581322][ T24] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.586874][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 60.592339][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.597881][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.603859][ T24] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.609332][ T24] ext4_writepages+0x1ab7/0x3400 [ 60.614388][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.620023][ T24] ? __lock_acquire+0x2224/0x48a0 [ 60.625063][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.631040][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.637018][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.643001][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.648635][ T24] ? do_writepages+0xfa/0x2a0 [ 60.653313][ T24] do_writepages+0xfa/0x2a0 [ 60.657828][ T24] ? page_writeback_cpu_online+0x10/0x10 [ 60.663462][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 60.668930][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.674473][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.680450][ T24] ? lock_downgrade+0x840/0x840 [ 60.685302][ T24] __writeback_single_inode+0x12a/0x1410 [ 60.690934][ T24] ? _raw_spin_unlock+0x24/0x40 [ 60.695782][ T24] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 60.701761][ T24] writeback_sb_inodes+0x515/0xdd0 [ 60.706935][ T24] ? __writeback_single_inode+0x1410/0x1410 [ 60.712844][ T24] __writeback_inodes_wb+0xc3/0x250 [ 60.718052][ T24] wb_writeback+0x910/0xd90 [ 60.722562][ T24] ? print_usage_bug+0x240/0x240 [ 60.727512][ T24] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 60.733840][ T24] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 60.739734][ T24] ? cpumask_next+0x3c/0x40 [ 60.744236][ T24] ? get_nr_dirty_inodes+0xd6/0x130 [ 60.749437][ T24] wb_workfn+0xadf/0x10d0 [ 60.753774][ T24] ? inode_wait_for_writeback+0x30/0x30 [ 60.759324][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 60.764795][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.770345][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.776327][ T24] process_one_work+0x965/0x16a0 [ 60.781271][ T24] ? lock_release+0x800/0x800 [ 60.785945][ T24] ? pwq_dec_nr_in_flight+0x310/0x310 [ 60.791318][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 60.796262][ T24] worker_thread+0x96/0xe10 [ 60.800777][ T24] ? process_one_work+0x16a0/0x16a0 [ 60.805971][ T24] kthread+0x388/0x470 [ 60.810035][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.815749][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.821466][ T24] ret_from_fork+0x24/0x30 [ 60.830051][ T24] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/24 [ 60.839424][ T24] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.845325][ T24] CPU: 1 PID: 24 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 60.853206][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.863266][ T24] Workqueue: writeback wb_workfn (flush-8:0) [ 60.869242][ T24] Call Trace: [ 60.872532][ T24] dump_stack+0x188/0x20d [ 60.876868][ T24] debug_smp_processor_id.cold+0x88/0x9b [ 60.882498][ T24] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.887607][ T24] ? __kmalloc+0x62f/0x7a0 [ 60.892029][ T24] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.897482][ T24] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.903202][ T24] ext4_ext_map_blocks+0x2044/0x3410 [ 60.908493][ T24] ? ext4_ext_release+0x10/0x10 [ 60.913357][ T24] ? __down_timeout+0x2d0/0x2d0 [ 60.918203][ T24] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.923670][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 60.929135][ T24] ext4_map_blocks+0x4cb/0x1640 [ 60.933990][ T24] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.939181][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 60.944641][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.950204][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.956184][ T24] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.961651][ T24] ext4_writepages+0x1ab7/0x3400 [ 60.966625][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.972258][ T24] ? __lock_acquire+0x2224/0x48a0 [ 60.977301][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.983284][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 60.989268][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.994895][ T24] ? do_writepages+0xfa/0x2a0 [ 60.999573][ T24] do_writepages+0xfa/0x2a0 [ 61.004078][ T24] ? page_writeback_cpu_online+0x10/0x10 [ 61.009705][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.015162][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.020710][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.026682][ T24] ? lock_downgrade+0x840/0x840 [ 61.031536][ T24] __writeback_single_inode+0x12a/0x1410 [ 61.037169][ T24] ? _raw_spin_unlock+0x24/0x40 [ 61.042052][ T24] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 61.048119][ T24] writeback_sb_inodes+0x515/0xdd0 [ 61.053272][ T24] ? __writeback_single_inode+0x1410/0x1410 [ 61.059182][ T24] __writeback_inodes_wb+0xc3/0x250 [ 61.064386][ T24] wb_writeback+0x910/0xd90 [ 61.068888][ T24] ? print_usage_bug+0x240/0x240 [ 61.073824][ T24] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 61.080407][ T24] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 61.086300][ T24] ? cpumask_next+0x3c/0x40 [ 61.090801][ T24] ? get_nr_dirty_inodes+0xd6/0x130 [ 61.096000][ T24] wb_workfn+0xadf/0x10d0 [ 61.100332][ T24] ? inode_wait_for_writeback+0x30/0x30 [ 61.105868][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.111332][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.116873][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.122856][ T24] process_one_work+0x965/0x16a0 [ 61.127804][ T24] ? lock_release+0x800/0x800 [ 61.132476][ T24] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.137848][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 61.142787][ T24] worker_thread+0x96/0xe10 [ 61.147298][ T24] ? process_one_work+0x16a0/0x16a0 [ 61.152491][ T24] kthread+0x388/0x470 [ 61.156558][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.162272][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.167988][ T24] ret_from_fork+0x24/0x30 [ 61.187101][ T24] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/24 [ 61.196198][ T24] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.202109][ T24] CPU: 1 PID: 24 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 61.210076][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.220136][ T24] Workqueue: writeback wb_workfn (flush-8:0) [ 61.226114][ T24] Call Trace: [ 61.229417][ T24] dump_stack+0x188/0x20d [ 61.233754][ T24] debug_smp_processor_id.cold+0x88/0x9b [ 61.239386][ T24] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.244494][ T24] ? __kmalloc+0x62f/0x7a0 [ 61.248922][ T24] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.254381][ T24] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.260107][ T24] ext4_ext_map_blocks+0x2044/0x3410 [ 61.265399][ T24] ? ext4_ext_release+0x10/0x10 [ 61.270274][ T24] ? __down_timeout+0x2d0/0x2d0 [ 61.275305][ T24] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.280771][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.286237][ T24] ext4_map_blocks+0x4cb/0x1640 [ 61.291099][ T24] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.296308][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.301785][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.307339][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.313409][ T24] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.318870][ T24] ext4_writepages+0x1ab7/0x3400 [ 61.323829][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.329456][ T24] ? __lock_acquire+0x2224/0x48a0 [ 61.334673][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.340697][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.346700][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.352341][ T24] ? do_writepages+0xfa/0x2a0 [ 61.357057][ T24] do_writepages+0xfa/0x2a0 [ 61.361565][ T24] ? page_writeback_cpu_online+0x10/0x10 [ 61.367195][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.372659][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.378217][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.384196][ T24] ? lock_downgrade+0x840/0x840 [ 61.389052][ T24] __writeback_single_inode+0x12a/0x1410 [ 61.394690][ T24] ? _raw_spin_unlock+0x24/0x40 [ 61.399571][ T24] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 61.405551][ T24] writeback_sb_inodes+0x515/0xdd0 [ 61.410672][ T24] ? __writeback_single_inode+0x1410/0x1410 [ 61.416582][ T24] __writeback_inodes_wb+0xc3/0x250 [ 61.421789][ T24] wb_writeback+0x910/0xd90 [ 61.426292][ T24] ? print_usage_bug+0x240/0x240 [ 61.431233][ T24] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 61.437559][ T24] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 61.443455][ T24] ? cpumask_next+0x3c/0x40 [ 61.447959][ T24] ? get_nr_dirty_inodes+0xd6/0x130 [ 61.453176][ T24] wb_workfn+0xadf/0x10d0 [ 61.457515][ T24] ? inode_wait_for_writeback+0x30/0x30 [ 61.463054][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.468519][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.474091][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.480074][ T24] process_one_work+0x965/0x16a0 [ 61.485020][ T24] ? lock_release+0x800/0x800 [ 61.489698][ T24] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.495099][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 61.500048][ T24] worker_thread+0x96/0xe10 [ 61.504565][ T24] ? process_one_work+0x16a0/0x16a0 [ 61.509776][ T24] kthread+0x388/0x470 [ 61.513851][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.519566][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.525287][ T24] ret_from_fork+0x24/0x30 [ 61.532736][ T24] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/24 [ 61.541897][ T24] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.547861][ T24] CPU: 1 PID: 24 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 61.555742][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.565803][ T24] Workqueue: writeback wb_workfn (flush-8:0) [ 61.571806][ T24] Call Trace: [ 61.575096][ T24] dump_stack+0x188/0x20d [ 61.579431][ T24] debug_smp_processor_id.cold+0x88/0x9b [ 61.585068][ T24] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.590177][ T24] ? __kmalloc+0x62f/0x7a0 [ 61.594608][ T24] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.600064][ T24] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.605785][ T24] ext4_ext_map_blocks+0x2044/0x3410 [ 61.611076][ T24] ? ext4_ext_release+0x10/0x10 [ 61.615944][ T24] ? __down_timeout+0x2d0/0x2d0 [ 61.620789][ T24] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.626245][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.631709][ T24] ext4_map_blocks+0x4cb/0x1640 [ 61.636594][ T24] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.641805][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.647268][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.652809][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.658792][ T24] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.664249][ T24] ext4_writepages+0x1ab7/0x3400 [ 61.669204][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.674833][ T24] ? __lock_acquire+0x2224/0x48a0 [ 61.679866][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.685859][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 61.691842][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.697471][ T24] ? do_writepages+0xfa/0x2a0 [ 61.702142][ T24] do_writepages+0xfa/0x2a0 [ 61.706648][ T24] ? page_writeback_cpu_online+0x10/0x10 [ 61.712275][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.717734][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.723278][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.729257][ T24] ? lock_downgrade+0x840/0x840 [ 61.734112][ T24] __writeback_single_inode+0x12a/0x1410 [ 61.739752][ T24] ? _raw_spin_unlock+0x24/0x40 [ 61.744606][ T24] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 61.750590][ T24] writeback_sb_inodes+0x515/0xdd0 [ 61.755731][ T24] ? __writeback_single_inode+0x1410/0x1410 [ 61.761645][ T24] __writeback_inodes_wb+0xc3/0x250 [ 61.766849][ T24] wb_writeback+0x910/0xd90 [ 61.771370][ T24] ? print_usage_bug+0x240/0x240 [ 61.776312][ T24] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 61.782638][ T24] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 61.788533][ T24] ? cpumask_next+0x3c/0x40 [ 61.793034][ T24] ? get_nr_dirty_inodes+0xd6/0x130 [ 61.798238][ T24] wb_workfn+0xadf/0x10d0 [ 61.802574][ T24] ? inode_wait_for_writeback+0x30/0x30 [ 61.808113][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.813576][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.819119][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.825102][ T24] process_one_work+0x965/0x16a0 [ 61.830046][ T24] ? lock_release+0x800/0x800 [ 61.834720][ T24] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.840097][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 61.845042][ T24] worker_thread+0x96/0xe10 [ 61.849556][ T24] ? process_one_work+0x16a0/0x16a0 [ 61.854751][ T24] kthread+0x388/0x470 [ 61.858815][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.864577][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.870303][ T24] ret_from_fork+0x24/0x30 [ 61.876494][ T24] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/24 [ 61.885540][ T24] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.891552][ T24] CPU: 1 PID: 24 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 61.899449][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.909516][ T24] Workqueue: writeback wb_workfn (flush-8:0) [ 61.915502][ T24] Call Trace: [ 61.918807][ T24] dump_stack+0x188/0x20d [ 61.923144][ T24] debug_smp_processor_id.cold+0x88/0x9b [ 61.928786][ T24] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.933907][ T24] ? __kmalloc+0x62f/0x7a0 [ 61.938347][ T24] ? ext4_ext_search_right+0x2ca/0xb20 executing program [ 61.943808][ T24] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.949535][ T24] ext4_ext_map_blocks+0x2044/0x3410 [ 61.954927][ T24] ? ext4_ext_release+0x10/0x10 [ 61.959797][ T24] ? __down_timeout+0x2d0/0x2d0 [ 61.964758][ T24] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.970216][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.975681][ T24] ext4_map_blocks+0x4cb/0x1640 [ 61.980623][ T24] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.985816][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 61.991279][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.996911][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.002890][ T24] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.008355][ T24] ext4_writepages+0x1ab7/0x3400 [ 62.013347][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.019062][ T24] ? __lock_acquire+0x2224/0x48a0 [ 62.024102][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 62.030088][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 62.036073][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.041700][ T24] ? do_writepages+0xfa/0x2a0 [ 62.046372][ T24] do_writepages+0xfa/0x2a0 [ 62.050883][ T24] ? page_writeback_cpu_online+0x10/0x10 [ 62.056511][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 62.061976][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.067530][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.073504][ T24] ? lock_downgrade+0x840/0x840 [ 62.078362][ T24] __writeback_single_inode+0x12a/0x1410 [ 62.083999][ T24] ? _raw_spin_unlock+0x24/0x40 [ 62.088854][ T24] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 62.094853][ T24] writeback_sb_inodes+0x515/0xdd0 [ 62.099994][ T24] ? __writeback_single_inode+0x1410/0x1410 [ 62.105922][ T24] __writeback_inodes_wb+0xc3/0x250 [ 62.111133][ T24] wb_writeback+0x910/0xd90 [ 62.115640][ T24] ? print_usage_bug+0x240/0x240 [ 62.120628][ T24] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 62.126957][ T24] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 62.132855][ T24] ? cpumask_next+0x3c/0x40 [ 62.137359][ T24] ? get_nr_dirty_inodes+0xd6/0x130 [ 62.142561][ T24] wb_workfn+0xadf/0x10d0 [ 62.146921][ T24] ? inode_wait_for_writeback+0x30/0x30 [ 62.152463][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 62.158011][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.163568][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.169555][ T24] process_one_work+0x965/0x16a0 [ 62.174504][ T24] ? lock_release+0x800/0x800 [ 62.179178][ T24] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.184550][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 62.189498][ T24] worker_thread+0x96/0xe10 [ 62.194011][ T24] ? process_one_work+0x16a0/0x16a0 [ 62.199209][ T24] kthread+0x388/0x470 [ 62.203273][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.208998][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.214717][ T24] ret_from_fork+0x24/0x30 [ 62.236717][ T24] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/24 [ 62.245809][ T24] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.251712][ T24] CPU: 1 PID: 24 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 62.259594][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.269652][ T24] Workqueue: writeback wb_workfn (flush-8:0) [ 62.275629][ T24] Call Trace: [ 62.278920][ T24] dump_stack+0x188/0x20d [ 62.283250][ T24] debug_smp_processor_id.cold+0x88/0x9b [ 62.288880][ T24] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.294002][ T24] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.299489][ T24] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.305641][ T24] ext4_ext_map_blocks+0x2044/0x3410 [ 62.310935][ T24] ? ext4_ext_release+0x10/0x10 [ 62.315801][ T24] ? __down_timeout+0x2d0/0x2d0 [ 62.320674][ T24] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.326301][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 62.331853][ T24] ext4_map_blocks+0x4cb/0x1640 [ 62.336851][ T24] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.342052][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 62.347531][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.353089][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.359072][ T24] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.364534][ T24] ext4_writepages+0x1ab7/0x3400 [ 62.369519][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.375151][ T24] ? __lock_acquire+0x2224/0x48a0 [ 62.382364][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 62.388349][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 62.394343][ T24] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.402579][ T24] ? do_writepages+0xfa/0x2a0 [ 62.407253][ T24] do_writepages+0xfa/0x2a0 [ 62.411773][ T24] ? page_writeback_cpu_online+0x10/0x10 [ 62.417407][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 62.422894][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.428442][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.434510][ T24] ? lock_downgrade+0x840/0x840 [ 62.439426][ T24] __writeback_single_inode+0x12a/0x1410 [ 62.445059][ T24] ? _raw_spin_unlock+0x24/0x40 [ 62.449912][ T24] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 62.455906][ T24] writeback_sb_inodes+0x515/0xdd0 [ 62.461040][ T24] ? __writeback_single_inode+0x1410/0x1410 [ 62.466962][ T24] __writeback_inodes_wb+0xc3/0x250 [ 62.472190][ T24] wb_writeback+0x910/0xd90 [ 62.476706][ T24] ? print_usage_bug+0x240/0x240 [ 62.481663][ T24] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 62.487999][ T24] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 62.493905][ T24] ? cpumask_next+0x3c/0x40 [ 62.498413][ T24] ? get_nr_dirty_inodes+0xd6/0x130 [ 62.505879][ T24] wb_workfn+0xadf/0x10d0 [ 62.510217][ T24] ? inode_wait_for_writeback+0x30/0x30 [ 62.515847][ T24] ? debug_smp_processor_id+0x2f/0x185 [ 62.521465][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.527020][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.533009][ T24] process_one_work+0x965/0x16a0 [ 62.537956][ T24] ? lock_release+0x800/0x800 [ 62.542635][ T24] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.548013][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 62.552959][ T24] worker_thread+0x96/0xe10 [ 62.557472][ T24] ? process_one_work+0x16a0/0x16a0 [ 62.562668][ T24] kthread+0x388/0x470 [ 62.566734][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.572446][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.578173][ T24] ret_from_fork+0x24/0x30 [ 62.795713][ T21] tipc: TX() has been purged, node left! [ 63.075485][ T6791] can: request_module (can-proto-0) failed. [ 63.337197][ T21] ================================================================== [ 63.345380][ T21] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x7a7/0x880 [ 63.353261][ T21] Write of size 1 at addr ffff888097a7d9e4 by task kworker/u4:1/21 [ 63.361133][ T21] [ 63.363467][ T21] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 63.371464][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.381514][ T21] Workqueue: netns cleanup_net [ 63.386258][ T21] Call Trace: [ 63.389538][ T21] dump_stack+0x188/0x20d [ 63.393850][ T21] ? afs_wake_up_async_call+0x7a7/0x880 [ 63.399376][ T21] ? afs_wake_up_async_call+0x7a7/0x880 [ 63.404901][ T21] ? afs_put_call+0xa70/0xa70 [ 63.409564][ T21] print_address_description.constprop.0.cold+0xd3/0x413 [ 63.416573][ T21] ? vprintk_func+0x97/0x1a6 [ 63.421163][ T21] ? afs_wake_up_async_call+0x7a7/0x880 [ 63.426689][ T21] kasan_report.cold+0x1f/0x37 [ 63.431442][ T21] ? afs_wake_up_async_call+0x7a7/0x880 [ 63.436968][ T21] afs_wake_up_async_call+0x7a7/0x880 [ 63.442325][ T21] ? do_raw_spin_lock+0x129/0x2e0 [ 63.447332][ T21] ? afs_close_socket+0x320/0x320 [ 63.452357][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 63.457284][ T21] ? rcu_read_lock_held+0x9c/0xb0 [ 63.462302][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 63.467920][ T21] ? afs_close_socket+0x320/0x320 [ 63.472925][ T21] ? afs_put_call+0xa70/0xa70 [ 63.477594][ T21] rxrpc_notify_socket+0x1e5/0x5e0 [ 63.482699][ T21] ? afs_put_call+0xa70/0xa70 [ 63.487357][ T21] __rxrpc_set_call_completion.part.0+0x172/0x420 [ 63.493755][ T21] rxrpc_call_completed+0xca/0xf0 [ 63.498760][ T21] rxrpc_discard_prealloc+0x786/0xac0 [ 63.504114][ T21] ? lock_sock_nested+0x94/0x110 [ 63.509047][ T21] rxrpc_listen+0x147/0x360 [ 63.513546][ T21] afs_close_socket+0x95/0x320 [ 63.518401][ T21] ? afs_purge_servers+0x16d/0x300 [ 63.523503][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 63.528996][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 63.534445][ T21] ? init_wait_var_entry+0x200/0x200 [ 63.539763][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 63.545389][ T21] afs_net_exit+0x1bc/0x310 [ 63.549881][ T21] ? afs_net_init+0xe30/0xe30 [ 63.554590][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 63.559740][ T21] cleanup_net+0x511/0xa50 [ 63.564138][ T21] ? unregister_pernet_device+0x70/0x70 [ 63.569683][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.575681][ T21] process_one_work+0x965/0x16a0 [ 63.580645][ T21] ? lock_release+0x800/0x800 [ 63.585837][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 63.591203][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 63.596129][ T21] worker_thread+0x96/0xe10 [ 63.600634][ T21] ? process_one_work+0x16a0/0x16a0 [ 63.605844][ T21] kthread+0x388/0x470 [ 63.609906][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.615620][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.621321][ T21] ret_from_fork+0x24/0x30 [ 63.625737][ T21] [ 63.628043][ T21] Allocated by task 6810: [ 63.632526][ T21] save_stack+0x1b/0x40 [ 63.636658][ T21] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 63.642296][ T21] kmem_cache_alloc_trace+0x153/0x7d0 [ 63.647647][ T21] afs_alloc_call+0x55/0x640 [ 63.652241][ T21] afs_charge_preallocation+0xe9/0x2d0 [ 63.657702][ T21] afs_open_socket+0x292/0x360 [ 63.662442][ T21] afs_net_init+0xa6c/0xe30 [ 63.666938][ T21] ops_init+0xaf/0x420 [ 63.670982][ T21] setup_net+0x2de/0x860 [ 63.675199][ T21] copy_net_ns+0x293/0x590 [ 63.679618][ T21] create_new_namespaces+0x3fb/0xb30 [ 63.684896][ T21] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 63.690514][ T21] ksys_unshare+0x43d/0x8e0 [ 63.695011][ T21] __x64_sys_unshare+0x2d/0x40 [ 63.699784][ T21] do_syscall_64+0xf6/0x7d0 [ 63.704281][ T21] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.710145][ T21] [ 63.712454][ T21] Freed by task 21: [ 63.716328][ T21] save_stack+0x1b/0x40 [ 63.720471][ T21] __kasan_slab_free+0xf7/0x140 [ 63.725304][ T21] kfree+0x109/0x2b0 [ 63.729186][ T21] afs_put_call+0x59b/0xa70 [ 63.733668][ T21] rxrpc_discard_prealloc+0x769/0xac0 [ 63.739018][ T21] rxrpc_listen+0x147/0x360 [ 63.743513][ T21] afs_close_socket+0x95/0x320 [ 63.748264][ T21] afs_net_exit+0x1bc/0x310 [ 63.752743][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 63.757863][ T21] cleanup_net+0x511/0xa50 [ 63.762254][ T21] process_one_work+0x965/0x16a0 [ 63.767167][ T21] worker_thread+0x96/0xe10 [ 63.771642][ T21] kthread+0x388/0x470 [ 63.775701][ T21] ret_from_fork+0x24/0x30 [ 63.780085][ T21] [ 63.782391][ T21] The buggy address belongs to the object at ffff888097a7d800 [ 63.782391][ T21] which belongs to the cache kmalloc-1k of size 1024 [ 63.796432][ T21] The buggy address is located 484 bytes inside of [ 63.796432][ T21] 1024-byte region [ffff888097a7d800, ffff888097a7dc00) [ 63.809761][ T21] The buggy address belongs to the page: [ 63.815389][ T21] page:ffffea00025e9f40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 63.824489][ T21] flags: 0xfffe0000000200(slab) [ 63.829319][ T21] raw: 00fffe0000000200 ffffea000245f4c8 ffffea000261fd08 ffff8880aa000c40 [ 63.837895][ T21] raw: 0000000000000000 ffff888097a7d000 0000000100000002 0000000000000000 [ 63.846449][ T21] page dumped because: kasan: bad access detected [ 63.852832][ T21] [ 63.855133][ T21] Memory state around the buggy address: [ 63.860752][ T21] ffff888097a7d880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.868789][ T21] ffff888097a7d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.876826][ T21] >ffff888097a7d980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.884863][ T21] ^ [ 63.892042][ T21] ffff888097a7da00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.900082][ T21] ffff888097a7da80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.908115][ T21] ================================================================== [ 63.916149][ T21] Disabling lock debugging due to kernel taint [ 63.922341][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 63.928922][ T21] CPU: 0 PID: 21 Comm: kworker/u4:1 Tainted: G B 5.7.0-syzkaller #0 [ 63.938186][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.948248][ T21] Workqueue: netns cleanup_net [ 63.952995][ T21] Call Trace: [ 63.956272][ T21] dump_stack+0x188/0x20d [ 63.960577][ T21] ? afs_wake_up_async_call+0x6b0/0x880 [ 63.966105][ T21] ? afs_put_call+0xa70/0xa70 [ 63.970751][ T21] panic+0x2e3/0x75c [ 63.974630][ T21] ? add_taint.cold+0x16/0x16 [ 63.979298][ T21] ? retint_kernel+0x2b/0x2b [ 63.983865][ T21] ? trace_hardirqs_on+0x55/0x230 [ 63.988864][ T21] ? afs_wake_up_async_call+0x7a7/0x880 [ 63.994379][ T21] ? afs_wake_up_async_call+0x7a7/0x880 [ 63.999907][ T21] ? afs_put_call+0xa70/0xa70 [ 64.004565][ T21] end_report+0x4d/0x53 [ 64.008708][ T21] kasan_report.cold+0xd/0x37 [ 64.013358][ T21] ? afs_wake_up_async_call+0x7a7/0x880 [ 64.018875][ T21] afs_wake_up_async_call+0x7a7/0x880 [ 64.024218][ T21] ? do_raw_spin_lock+0x129/0x2e0 [ 64.029213][ T21] ? afs_close_socket+0x320/0x320 [ 64.034224][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 64.039133][ T21] ? rcu_read_lock_held+0x9c/0xb0 [ 64.044128][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 64.049731][ T21] ? afs_close_socket+0x320/0x320 [ 64.054738][ T21] ? afs_put_call+0xa70/0xa70 [ 64.059400][ T21] rxrpc_notify_socket+0x1e5/0x5e0 [ 64.064500][ T21] ? afs_put_call+0xa70/0xa70 [ 64.069151][ T21] __rxrpc_set_call_completion.part.0+0x172/0x420 [ 64.075551][ T21] rxrpc_call_completed+0xca/0xf0 [ 64.080552][ T21] rxrpc_discard_prealloc+0x786/0xac0 [ 64.085899][ T21] ? lock_sock_nested+0x94/0x110 [ 64.090811][ T21] rxrpc_listen+0x147/0x360 [ 64.095289][ T21] afs_close_socket+0x95/0x320 [ 64.100035][ T21] ? afs_purge_servers+0x16d/0x300 [ 64.105118][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 64.110548][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 64.115981][ T21] ? init_wait_var_entry+0x200/0x200 [ 64.121238][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 64.126842][ T21] afs_net_exit+0x1bc/0x310 [ 64.131317][ T21] ? afs_net_init+0xe30/0xe30 [ 64.135980][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 64.141064][ T21] cleanup_net+0x511/0xa50 [ 64.145464][ T21] ? unregister_pernet_device+0x70/0x70 [ 64.150994][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.156947][ T21] process_one_work+0x965/0x16a0 [ 64.161863][ T21] ? lock_release+0x800/0x800 [ 64.166528][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 64.171873][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 64.176784][ T21] worker_thread+0x96/0xe10 [ 64.181263][ T21] ? process_one_work+0x16a0/0x16a0 [ 64.186431][ T21] kthread+0x388/0x470 [ 64.190484][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.196186][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.201878][ T21] ret_from_fork+0x24/0x30 [ 64.207543][ T21] Kernel Offset: disabled [ 64.211858][ T21] Rebooting in 86400 seconds..