[   50.860722][ T6729] RBP: 00007f06459c7680 R08: 0000000000000100 R09: 0000000000000000
[   50.860730][ T6729] R10: 000055c1b472e980 R11: 0000000000000246 R12: 00000000000001ed
[   50.860737][ T6729] R13: 00007ffc4875b890 R14: 0000000000000000 R15: 0000000000000000
[  OK  ] Started Update UTMP about System Runlevel Changes.
[  OK  ] Started Load/Save RF Kill Switch Status.


Debian GNU/Linux 9 syzkaller ttyS0

syzkaller login: [   57.908179][  T103] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/103
[   57.917388][  T103] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   57.923749][  T103] CPU: 1 PID: 103 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0
[   57.931720][  T103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.941765][  T103] Workqueue: writeback wb_workfn (flush-8:0)
[   57.947721][  T103] Call Trace:
[   57.951013][  T103]  dump_stack+0x188/0x20d
[   57.955389][  T103]  debug_smp_processor_id.cold+0x88/0x9b
[   57.961017][  T103]  ext4_mb_new_blocks+0xa77/0x3b30
[   57.966133][  T103]  ? __kmalloc+0x62f/0x7a0
[   57.970553][  T103]  ? ext4_ext_search_right+0x2ca/0xb20
[   57.975990][  T103]  ? ext4_inode_to_goal_block+0x2df/0x3f0
[   57.981704][  T103]  ext4_ext_map_blocks+0x2044/0x3410
[   57.987071][  T103]  ? ext4_ext_release+0x10/0x10
[   57.991913][  T103]  ? __down_timeout+0x2d0/0x2d0
[   57.996756][  T103]  ? ext4_es_lookup_extent+0x41d/0xd30
[   58.002204][  T103]  ? debug_smp_processor_id+0x2f/0x185
[   58.007642][  T103]  ext4_map_blocks+0x4cb/0x1640
[   58.012473][  T103]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   58.017659][  T103]  ? debug_smp_processor_id+0x2f/0x185
[   58.023096][  T103]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   58.028617][  T103]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   58.034573][  T103]  ? ext4_alloc_io_end_vec+0x145/0x1c0
[   58.040010][  T103]  ext4_writepages+0x1ab7/0x3400
[   58.044935][  T103]  ? __ext4_mark_inode_dirty+0x950/0x950
[   58.050542][  T103]  ? __lock_acquire+0x2224/0x48a0
[   58.055563][  T103]  ? lockdep_hardirqs_on_prepare+0x590/0x590
[   58.061535][  T103]  ? lockdep_hardirqs_on_prepare+0x590/0x590
[   58.067508][  T103]  ? __ext4_mark_inode_dirty+0x950/0x950
[   58.073133][  T103]  ? do_writepages+0xfa/0x2a0
[   58.077787][  T103]  do_writepages+0xfa/0x2a0
[   58.082284][  T103]  ? page_writeback_cpu_online+0x10/0x10
[   58.087890][  T103]  ? debug_smp_processor_id+0x2f/0x185
[   58.093330][  T103]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   58.098864][  T103]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   58.104841][  T103]  ? lock_downgrade+0x840/0x840
[   58.109671][  T103]  __writeback_single_inode+0x12a/0x1410
[   58.115294][  T103]  ? _raw_spin_unlock+0x24/0x40
[   58.120136][  T103]  ? wbc_attach_and_unlock_inode+0x60a/0x9c0
[   58.126091][  T103]  writeback_sb_inodes+0x515/0xdd0
[   58.131189][  T103]  ? __writeback_single_inode+0x1410/0x1410
[   58.137068][  T103]  __writeback_inodes_wb+0xc3/0x250
[   58.142247][  T103]  wb_writeback+0x910/0xd90
[   58.146741][  T103]  ? print_usage_bug+0x240/0x240
[   58.151671][  T103]  ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0
[   58.157976][  T103]  ? _find_next_bit.constprop.0+0x1a3/0x200
[   58.163846][  T103]  ? cpumask_next+0x3c/0x40
[   58.168327][  T103]  ? get_nr_dirty_inodes+0xd6/0x130
[   58.173517][  T103]  wb_workfn+0xadf/0x10d0
[   58.177853][  T103]  ? inode_wait_for_writeback+0x30/0x30
[   58.183387][  T103]  ? debug_smp_processor_id+0x2f/0x185
[   58.188839][  T103]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   58.194459][  T103]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   58.200432][  T103]  process_one_work+0x965/0x16a0
[   58.205351][  T103]  ? lock_release+0x800/0x800
[   58.210027][  T103]  ? pwq_dec_nr_in_flight+0x310/0x310
[   58.215384][  T103]  ? rwlock_bug.part.0+0x90/0x90
[   58.220316][  T103]  worker_thread+0x96/0xe10
[   58.224799][  T103]  ? process_one_work+0x16a0/0x16a0
[   58.230011][  T103]  kthread+0x388/0x470
[   58.234063][  T103]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   58.239771][  T103]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   58.245482][  T103]  ret_from_fork+0x24/0x30
Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts.
2020/06/14 10:21:23 fuzzer started
2020/06/14 10:21:23 connecting to host at 10.128.0.26:35061
2020/06/14 10:21:23 checking machine...
2020/06/14 10:21:23 checking revisions...
2020/06/14 10:21:23 testing simple program...
[   59.650688][ T6791] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6791
[   59.659898][ T6791] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   59.665772][ T6791] CPU: 0 PID: 6791 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0
[   59.673641][ T6791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.683720][ T6791] Call Trace:
[   59.687000][ T6791]  dump_stack+0x188/0x20d
[   59.691319][ T6791]  debug_smp_processor_id.cold+0x88/0x9b
[   59.696937][ T6791]  ext4_mb_new_blocks+0xa77/0x3b30
[   59.702036][ T6791]  ? ext4_ext_search_right+0x2ca/0xb20
[   59.707474][ T6791]  ? ext4_inode_to_goal_block+0x2df/0x3f0
[   59.713172][ T6791]  ext4_ext_map_blocks+0x2044/0x3410
[   59.718459][ T6791]  ? ext4_ext_release+0x10/0x10
[   59.723327][ T6791]  ? __down_timeout+0x2d0/0x2d0
[   59.728152][ T6791]  ? ext4_es_lookup_extent+0x41d/0xd30
[   59.733590][ T6791]  ext4_map_blocks+0x4cb/0x1640
[   59.738420][ T6791]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   59.743591][ T6791]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   59.749112][ T6791]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   59.755068][ T6791]  ? prandom_u32_state+0xe/0x170
[   59.759995][ T6791]  ? __brelse+0x84/0xa0
[   59.764137][ T6791]  ? __ext4_new_inode+0x144/0x57c0
[   59.769236][ T6791]  ext4_getblk+0xad/0x520
[   59.773541][ T6791]  ? ext4_iomap_overwrite_begin+0xa0/0xa0
[   59.779251][ T6791]  ? ext4_free_inode+0x17e0/0x17e0
[   59.784349][ T6791]  ext4_bread+0x7c/0x380
[   59.788583][ T6791]  ? ext4_getblk+0x520/0x520
[   59.793148][ T6791]  ? dqget+0xff0/0xff0
[   59.797201][ T6791]  ext4_append+0x153/0x360
[   59.801596][ T6791]  ext4_mkdir+0x5e0/0xdf0
[   59.805906][ T6791]  ? ext4_rmdir+0xde0/0xde0
[   59.810398][ T6791]  ? security_inode_permission+0xc4/0xf0
[   59.816009][ T6791]  vfs_mkdir+0x419/0x690
[   59.820246][ T6791]  do_mkdirat+0x21e/0x280
[   59.824554][ T6791]  ? __ia32_sys_mknod+0xb0/0xb0
[   59.829391][ T6791]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   59.835368][ T6791]  ? do_syscall_64+0x21/0x7d0
[   59.840020][ T6791]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   59.845979][ T6791]  do_syscall_64+0xf6/0x7d0
[   59.850460][ T6791]  entry_SYSCALL_64_after_hwframe+0x49/0xb3
[   59.856344][ T6791] RIP: 0033:0x4b02a0
[   59.860216][ 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
[   59.879808][ T6791] RSP: 002b:000000c0000df4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102
[   59.888192][ T6791] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0
[   59.896150][ T6791] RDX: 00000000000001c0 RSI: 000000c0002f4920 RDI: ffffffffffffff9c
[   59.904094][ T6791] RBP: 000000c0000df510 R08: 0000000000000000 R09: 0000000000000000
[   59.912048][ T6791] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff
[   59.920004][ T6791] R13: 000000000000004a R14: 0000000000000049 R15: 0000000000000100
[   59.947953][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6809
[   59.957446][ T6809] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   59.963334][ T6809] CPU: 1 PID: 6809 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0
[   59.971601][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   59.981652][ T6809] Call Trace:
[   59.984941][ T6809]  dump_stack+0x188/0x20d
[   59.989276][ T6809]  debug_smp_processor_id.cold+0x88/0x9b
[   59.994901][ T6809]  ext4_mb_new_blocks+0xa77/0x3b30
[   60.000012][ T6809]  ? ext4_ext_search_right+0x2ca/0xb20
[   60.005454][ T6809]  ? ext4_inode_to_goal_block+0x2df/0x3f0
[   60.011175][ T6809]  ext4_ext_map_blocks+0x2044/0x3410
[   60.016461][ T6809]  ? ext4_ext_release+0x10/0x10
[   60.021305][ T6809]  ? __down_timeout+0x2d0/0x2d0
[   60.026134][ T6809]  ? ext4_es_lookup_extent+0x41d/0xd30
[   60.031570][ T6809]  ext4_map_blocks+0x4cb/0x1640
[   60.036405][ T6809]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   60.041581][ T6809]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   60.047108][ T6809]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   60.053076][ T6809]  ? prandom_u32_state+0xe/0x170
[   60.057990][ T6809]  ? __brelse+0x84/0xa0
[   60.062141][ T6809]  ? __ext4_new_inode+0x144/0x57c0
[   60.067230][ T6809]  ext4_getblk+0xad/0x520
[   60.071536][ T6809]  ? ext4_iomap_overwrite_begin+0xa0/0xa0
[   60.077233][ T6809]  ? ext4_free_inode+0x17e0/0x17e0
[   60.082321][ T6809]  ext4_bread+0x7c/0x380
[   60.086556][ T6809]  ? ext4_getblk+0x520/0x520
[   60.091140][ T6809]  ? dqget+0xff0/0xff0
[   60.095198][ T6809]  ext4_append+0x153/0x360
[   60.099624][ T6809]  ext4_mkdir+0x5e0/0xdf0
[   60.103944][ T6809]  ? ext4_rmdir+0xde0/0xde0
[   60.108432][ T6809]  ? security_inode_permission+0xc4/0xf0
[   60.114055][ T6809]  vfs_mkdir+0x419/0x690
[   60.118303][ T6809]  do_mkdirat+0x21e/0x280
[   60.122618][ T6809]  ? __ia32_sys_mknod+0xb0/0xb0
[   60.127451][ T6809]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   60.133427][ T6809]  ? do_syscall_64+0x21/0x7d0
[   60.138095][ T6809]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   60.144068][ T6809]  do_syscall_64+0xf6/0x7d0
[   60.148570][ T6809]  entry_SYSCALL_64_after_hwframe+0x49/0xb3
[   60.154445][ T6809] RIP: 0033:0x45bee7
[   60.158325][ 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
[   60.177914][ T6809] RSP: 002b:00007ffc45756908 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[   60.186317][ T6809] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7
[   60.194274][ T6809] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffc45756ae0
[   60.202242][ T6809] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000035c0
[   60.210228][ T6809] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2
[   60.218191][ T6809] R13: 00007ffc45756ae0 R14: 8421084210842109 R15: 00007ffc45756aec
[   60.304704][ T6810] IPVS: ftp: loaded support on port[0] = 21
[   60.341877][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810
[   60.351446][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   60.357575][ T6810] CPU: 1 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0
[   60.365901][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.375993][ T6810] Call Trace:
[   60.379287][ T6810]  dump_stack+0x188/0x20d
[   60.383620][ T6810]  debug_smp_processor_id.cold+0x88/0x9b
[   60.389245][ T6810]  ext4_mb_new_blocks+0xa77/0x3b30
[   60.394338][ T6810]  ? ext4_ext_search_right+0x2ca/0xb20
[   60.399787][ T6810]  ? ext4_inode_to_goal_block+0x2df/0x3f0
[   60.405482][ T6810]  ext4_ext_map_blocks+0x2044/0x3410
[   60.410750][ T6810]  ? ext4_ext_release+0x10/0x10
[   60.415620][ T6810]  ? __down_timeout+0x2d0/0x2d0
[   60.420462][ T6810]  ? ext4_es_lookup_extent+0x41d/0xd30
[   60.425913][ T6810]  ext4_map_blocks+0x4cb/0x1640
[   60.430746][ T6810]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   60.435921][ T6810]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   60.441505][ T6810]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   60.447493][ T6810]  ? prandom_u32_state+0xe/0x170
[   60.452411][ T6810]  ? __brelse+0x84/0xa0
[   60.456545][ T6810]  ? __ext4_new_inode+0x144/0x57c0
[   60.461638][ T6810]  ext4_getblk+0xad/0x520
[   60.465985][ T6810]  ? ext4_iomap_overwrite_begin+0xa0/0xa0
[   60.471715][ T6810]  ? ext4_free_inode+0x17e0/0x17e0
[   60.476827][ T6810]  ext4_bread+0x7c/0x380
[   60.481061][ T6810]  ? ext4_getblk+0x520/0x520
[   60.485633][ T6810]  ? dqget+0xff0/0xff0
[   60.489684][ T6810]  ext4_append+0x153/0x360
[   60.494081][ T6810]  ext4_mkdir+0x5e0/0xdf0
[   60.498400][ T6810]  ? ext4_rmdir+0xde0/0xde0
[   60.502893][ T6810]  ? security_inode_permission+0xc4/0xf0
[   60.508522][ T6810]  vfs_mkdir+0x419/0x690
[   60.512741][ T6810]  do_mkdirat+0x21e/0x280
[   60.517055][ T6810]  ? __ia32_sys_mknod+0xb0/0xb0
[   60.521896][ T6810]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   60.527855][ T6810]  ? do_syscall_64+0x21/0x7d0
[   60.532507][ T6810]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   60.538477][ T6810]  do_syscall_64+0xf6/0x7d0
[   60.542970][ T6810]  entry_SYSCALL_64_after_hwframe+0x49/0xb3
[   60.548837][ T6810] RIP: 0033:0x45bee7
[   60.552731][ 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
[   60.572320][ T6810] RSP: 002b:00007ffc457567f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053
[   60.580977][ T6810] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7
[   60.588938][ T6810] RDX: 00007ffc45756843 RSI: 00000000000001ff RDI: 00007ffc45756840
[   60.596884][ T6810] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003
[   60.604845][ T6810] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0
[   60.612806][ T6810] R13: 00007ffc45756830 R14: 0000000000000000 R15: 00007ffc45756840
[   60.661981][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810
[   60.671613][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   60.677907][ T6810] CPU: 0 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0
[   60.686176][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.696229][ T6810] Call Trace:
[   60.699565][ T6810]  dump_stack+0x188/0x20d
[   60.703903][ T6810]  debug_smp_processor_id.cold+0x88/0x9b
[   60.709541][ T6810]  ext4_mb_new_blocks+0xa77/0x3b30
[   60.714672][ T6810]  ? ext4_ext_search_right+0x2ca/0xb20
[   60.720140][ T6810]  ? ext4_inode_to_goal_block+0x2df/0x3f0
[   60.725866][ T6810]  ext4_ext_map_blocks+0x2044/0x3410
[   60.731157][ T6810]  ? ext4_ext_release+0x10/0x10
[   60.736028][ T6810]  ? __down_timeout+0x2d0/0x2d0
[   60.740883][ T6810]  ? ext4_es_lookup_extent+0x41d/0xd30
[   60.746337][ T6810]  ext4_map_blocks+0x4cb/0x1640
[   60.751362][ T6810]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   60.756594][ T6810]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   60.762138][ T6810]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   60.768097][ T6810]  ? prandom_u32_state+0xe/0x170
[   60.773040][ T6810]  ? __brelse+0x84/0xa0
[   60.777198][ T6810]  ? __ext4_new_inode+0x144/0x57c0
[   60.782289][ T6810]  ext4_getblk+0xad/0x520
[   60.786595][ T6810]  ? ext4_iomap_overwrite_begin+0xa0/0xa0
[   60.792297][ T6810]  ? ext4_free_inode+0x17e0/0x17e0
[   60.797402][ T6810]  ext4_bread+0x7c/0x380
[   60.801623][ T6810]  ? ext4_getblk+0x520/0x520
[   60.806188][ T6810]  ? dqget+0xff0/0xff0
[   60.810238][ T6810]  ext4_append+0x153/0x360
[   60.814637][ T6810]  ext4_mkdir+0x5e0/0xdf0
[   60.818949][ T6810]  ? ext4_rmdir+0xde0/0xde0
[   60.823433][ T6810]  ? security_inode_permission+0xc4/0xf0
[   60.829044][ T6810]  vfs_mkdir+0x419/0x690
[   60.833270][ T6810]  do_mkdirat+0x21e/0x280
[   60.837597][ T6810]  ? __ia32_sys_mknod+0xb0/0xb0
[   60.842581][ T6810]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   60.848570][ T6810]  ? do_syscall_64+0x21/0x7d0
[   60.853227][ T6810]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   60.859188][ T6810]  do_syscall_64+0xf6/0x7d0
[   60.863673][ T6810]  entry_SYSCALL_64_after_hwframe+0x49/0xb3
[   60.869543][ T6810] RIP: 0033:0x45bee7
[   60.873413][ 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
[   60.893090][ T6810] RSP: 002b:00007ffc457567f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053
[   60.901493][ T6810] RAX: ffffffffffffffda RBX: 000000000000ecf4 RCX: 000000000045bee7
2020/06/14 10:21:24 building call list...
[   60.909604][ T6810] RDX: 00007ffc45756843 RSI: 00000000000001ff RDI: 00007ffc45756840
[   60.917572][ T6810] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003
[   60.925611][ T6810] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003
[   60.933574][ T6810] R13: 00007ffc45756830 R14: 000000000000ecf1 R15: 00007ffc45756840
[   60.964154][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155
[   60.973449][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   60.979470][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0
[   60.987352][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   60.997395][ T1155] Call Trace:
[   61.000682][ T1155]  dump_stack+0x188/0x20d
[   61.005020][ T1155]  debug_smp_processor_id.cold+0x88/0x9b
[   61.010667][ T1155]  ext4_mb_new_blocks+0xa77/0x3b30
[   61.015782][ T1155]  ? __kmalloc+0x62f/0x7a0
[   61.020207][ T1155]  ? ext4_ext_search_right+0x2ca/0xb20
[   61.025659][ T1155]  ? ext4_inode_to_goal_block+0x2df/0x3f0
[   61.031378][ T1155]  ext4_ext_map_blocks+0x2044/0x3410
[   61.036666][ T1155]  ? ext4_ext_release+0x10/0x10
[   61.041525][ T1155]  ? __down_timeout+0x2d0/0x2d0
[   61.046370][ T1155]  ? ext4_es_lookup_extent+0x41d/0xd30
[   61.051827][ T1155]  ext4_map_blocks+0x4cb/0x1640
[   61.056679][ T1155]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   61.061874][ T1155]  ? debug_smp_processor_id+0x2f/0x185
[   61.067333][ T1155]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   61.072871][ T1155]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   61.078845][ T1155]  ? ext4_alloc_io_end_vec+0x145/0x1c0
[   61.084303][ T1155]  ext4_writepages+0x1ab7/0x3400
[   61.089252][ T1155]  ? mark_lock+0x30/0xdd0
[   61.093592][ T1155]  ? __ext4_mark_inode_dirty+0x950/0x950
[   61.099275][ T1155]  ? __ext4_mark_inode_dirty+0x950/0x950
[   61.104898][ T1155]  ? do_writepages+0xfa/0x2a0
[   61.109572][ T1155]  do_writepages+0xfa/0x2a0
[   61.114075][ T1155]  ? page_writeback_cpu_online+0x10/0x10
[   61.119703][ T1155]  ? do_raw_spin_lock+0x129/0x2e0
[   61.124718][ T1155]  ? do_raw_spin_unlock+0x171/0x260
[   61.129914][ T1155]  ? _raw_spin_unlock+0x24/0x40
[   61.134762][ T1155]  __filemap_fdatawrite_range+0x2aa/0x390
[   61.140483][ T1155]  ? collapse_file+0x3575/0x4300
[   61.145435][ T1155]  ? delete_from_page_cache_batch+0xec0/0xec0
[   61.151518][ T1155]  ? _raw_spin_unlock_irq+0x1f/0x80
[   61.156724][ T1155]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   61.162711][ T1155]  collapse_file+0x357f/0x4300
[   61.167489][ T1155]  ? collapse_huge_page+0x4370/0x4370
[   61.172853][ T1155]  ? khugepaged+0x24fa/0x3f80
[   61.177546][ T1155]  khugepaged+0x3049/0x3f80
[   61.182086][ T1155]  ? collapse_pte_mapped_thp+0xbf0/0xbf0
[   61.187716][ T1155]  ? lock_downgrade+0x840/0x840
[   61.193256][ T1155]  ? finish_wait+0x260/0x260
[   61.197842][ T1155]  ? _raw_spin_unlock_irqrestore+0x62/0xe0
[   61.203640][ T1155]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   61.209641][ T1155]  ? __kthread_parkme+0x13f/0x1e0
[   61.214662][ T1155]  ? collapse_pte_mapped_thp+0xbf0/0xbf0
[   61.220307][ T1155]  kthread+0x388/0x470
[   61.224369][ T1155]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   61.230080][ T1155]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   61.235794][ T1155]  ret_from_fork+0x24/0x30
[   61.306867][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155
[   61.316029][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   61.322014][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0
[   61.329900][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   61.339959][ T1155] Call Trace:
[   61.343261][ T1155]  dump_stack+0x188/0x20d
[   61.347592][ T1155]  debug_smp_processor_id.cold+0x88/0x9b
[   61.353229][ T1155]  ext4_mb_new_blocks+0xa77/0x3b30
[   61.358357][ T1155]  ? ext4_ext_search_right+0x2ca/0xb20
[   61.363820][ T1155]  ? ext4_ext_next_allocated_block+0x221/0x2d0
[   61.370062][ T1155]  ext4_ext_map_blocks+0x2044/0x3410
[   61.375359][ T1155]  ? ext4_ext_release+0x10/0x10
[   61.380224][ T1155]  ? __down_timeout+0x2d0/0x2d0
[   61.385069][ T1155]  ? ext4_es_lookup_extent+0x41d/0xd30
[   61.390532][ T1155]  ext4_map_blocks+0x4cb/0x1640
[   61.395385][ T1155]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   61.400573][ T1155]  ? debug_smp_processor_id+0x2f/0x185
[   61.406030][ T1155]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   61.411575][ T1155]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   61.417552][ T1155]  ? ext4_alloc_io_end_vec+0x145/0x1c0
[   61.423016][ T1155]  ext4_writepages+0x1ab7/0x3400
[   61.427958][ T1155]  ? mark_lock+0x30/0xdd0
[   61.432297][ T1155]  ? __ext4_mark_inode_dirty+0x950/0x950
[   61.437958][ T1155]  ? __ext4_mark_inode_dirty+0x950/0x950
[   61.443582][ T1155]  ? do_writepages+0xfa/0x2a0
[   61.448250][ T1155]  do_writepages+0xfa/0x2a0
[   61.452757][ T1155]  ? page_writeback_cpu_online+0x10/0x10
[   61.458385][ T1155]  ? do_raw_spin_lock+0x129/0x2e0
[   61.463413][ T1155]  ? do_raw_spin_unlock+0x171/0x260
[   61.468610][ T1155]  ? _raw_spin_unlock+0x24/0x40
[   61.473462][ T1155]  __filemap_fdatawrite_range+0x2aa/0x390
[   61.479181][ T1155]  ? collapse_file+0x3575/0x4300
[   61.484114][ T1155]  ? delete_from_page_cache_batch+0xec0/0xec0
[   61.490185][ T1155]  ? _raw_spin_unlock_irq+0x1f/0x80
[   61.495379][ T1155]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   61.501356][ T1155]  collapse_file+0x357f/0x4300
[   61.506138][ T1155]  ? collapse_huge_page+0x4370/0x4370
[   61.511543][ T1155]  ? khugepaged+0x24fa/0x3f80
[   61.516255][ T1155]  khugepaged+0x3049/0x3f80
[   61.520779][ T1155]  ? collapse_pte_mapped_thp+0xbf0/0xbf0
[   61.526411][ T1155]  ? lock_downgrade+0x840/0x840
[   61.531955][ T1155]  ? finish_wait+0x260/0x260
[   61.536545][ T1155]  ? _raw_spin_unlock_irqrestore+0x62/0xe0
[   61.542346][ T1155]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   61.548334][ T1155]  ? __kthread_parkme+0x13f/0x1e0
[   61.553364][ T1155]  ? collapse_pte_mapped_thp+0xbf0/0xbf0
[   61.559000][ T1155]  kthread+0x388/0x470
[   61.563071][ T1155]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   61.568822][ T1155]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   61.574544][ T1155]  ret_from_fork+0x24/0x30
[   61.622985][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155
[   61.632090][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30
[   61.638077][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0
[   61.645954][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   61.656024][ T1155] Call Trace:
[   61.659313][ T1155]  dump_stack+0x188/0x20d
[   61.663639][ T1155]  debug_smp_processor_id.cold+0x88/0x9b
[   61.669264][ T1155]  ext4_mb_new_blocks+0xa77/0x3b30
[   61.674377][ T1155]  ? ext4_ext_search_right+0x2ca/0xb20
[   61.679833][ T1155]  ? ext4_ext_next_allocated_block+0x221/0x2d0
[   61.685977][ T1155]  ext4_ext_map_blocks+0x2044/0x3410
[   61.691263][ T1155]  ? ext4_ext_release+0x10/0x10
[   61.696123][ T1155]  ? __down_timeout+0x2d0/0x2d0
[   61.700993][ T1155]  ? ext4_es_lookup_extent+0x41d/0xd30
[   61.706456][ T1155]  ext4_map_blocks+0x4cb/0x1640
[   61.711322][ T1155]  ? ext4_issue_zeroout+0x1e0/0x1e0
[   61.716528][ T1155]  ? debug_smp_processor_id+0x2f/0x185
[   61.722001][ T1155]  ? rcu_read_lock_sched_held+0x9c/0xd0
[   61.727547][ T1155]  ? rcu_read_lock_any_held.part.0+0x50/0x50
[   61.733523][ T1155]  ? ext4_alloc_io_end_vec+0x145/0x1c0
[   61.738982][ T1155]  ext4_writepages+0x1ab7/0x3400
[   61.743924][ T1155]  ? mark_lock+0x30/0xdd0
[   61.748268][ T1155]  ? __ext4_mark_inode_dirty+0x950/0x950
[   61.753928][ T1155]  ? __ext4_mark_inode_dirty+0x950/0x950
[   61.759575][ T1155]  ? do_writepages+0xfa/0x2a0
[   61.764244][ T1155]  do_writepages+0xfa/0x2a0
[   61.768747][ T1155]  ? page_writeback_cpu_online+0x10/0x10
[   61.774372][ T1155]  ? do_raw_spin_lock+0x129/0x2e0
[   61.779388][ T1155]  ? do_raw_spin_unlock+0x171/0x260
[   61.784583][ T1155]  ? _raw_spin_unlock+0x24/0x40
[   61.789456][ T1155]  __filemap_fdatawrite_range+0x2aa/0x390
[   61.795168][ T1155]  ? collapse_file+0x3575/0x4300
[   61.800103][ T1155]  ? delete_from_page_cache_batch+0xec0/0xec0
[   61.806170][ T1155]  ? _raw_spin_unlock_irq+0x1f/0x80
[   61.811362][ T1155]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   61.817342][ T1155]  collapse_file+0x357f/0x4300
[   61.822123][ T1155]  ? collapse_huge_page+0x4370/0x4370
[   61.827492][ T1155]  ? khugepaged+0x24fa/0x3f80
[   61.832183][ T1155]  khugepaged+0x3049/0x3f80
[   61.836706][ T1155]  ? collapse_pte_mapped_thp+0xbf0/0xbf0
[   61.842333][ T1155]  ? lock_downgrade+0x840/0x840
[   61.847184][ T1155]  ? finish_wait+0x260/0x260
[   61.851771][ T1155]  ? _raw_spin_unlock_irqrestore+0x62/0xe0
[   61.857571][ T1155]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   61.863570][ T1155]  ? __kthread_parkme+0x13f/0x1e0
[   61.868591][ T1155]  ? collapse_pte_mapped_thp+0xbf0/0xbf0
[   61.874220][ T1155]  kthread+0x388/0x470
[   61.878290][ T1155]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   61.884000][ T1155]  ? kthread_mod_delayed_work+0x1a0/0x1a0
[   61.889715][ T1155]  ret_from_fork+0x24/0x30
[   62.037308][  T362] tipc: TX() has been purged, node left!
executing program
[   62.925054][ T6796] can: request_module (can-proto-0) failed.
[   63.982346][ T6796] can: request_module (can-proto-0) failed.
[   63.994533][ T6796] can: request_module (can-proto-0) failed.