[ 104.859550][ T39] audit: type=1400 audit(1591406767.365:41): avc: denied { map } for pid=9099 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '[localhost]:62919' (ECDSA) to the list of known hosts. [ 107.170857][ T39] audit: type=1400 audit(1591406769.675:42): avc: denied { map } for pid=9111 comm="syz-fuzzer" path="/syz-fuzzer" dev="sda1" ino=16524 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2020/06/06 01:26:09 fuzzer started 2020/06/06 01:26:10 connecting to host at 10.0.2.10:35139 2020/06/06 01:26:10 checking machine... 2020/06/06 01:26:10 checking revisions... 2020/06/06 01:26:10 testing simple program... [ 107.618542][ T39] audit: type=1400 audit(1591406770.115:43): avc: denied { integrity } for pid=9111 comm="syz-fuzzer" lockdown_reason="debugfs access" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=lockdown permissive=1 [ 107.660174][ T39] audit: type=1400 audit(1591406770.125:44): avc: denied { map } for pid=9111 comm="syz-fuzzer" path="/sys/kernel/debug/kcov" dev="debugfs" ino=24603 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 108.239494][ T9114] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/9114 [ 108.249838][ T9114] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 108.260180][ T9114] CPU: 2 PID: 9114 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 108.269980][ T9114] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 108.269980][ T9114] Call Trace: [ 108.269980][ T9114] dump_stack+0x188/0x20d [ 108.269980][ T9114] debug_smp_processor_id.cold+0x88/0x9b [ 108.269980][ T9114] ext4_mb_new_blocks+0xa77/0x3b30 [ 108.269980][ T9114] ? ext4_ext_search_right+0x2ca/0xb20 [ 108.269980][ T9114] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 108.269980][ T9114] ext4_ext_map_blocks+0x2044/0x3410 [ 108.269980][ T9114] ? ext4_ext_release+0x10/0x10 [ 108.269980][ T9114] ? __down_timeout+0x2d0/0x2d0 [ 108.269980][ T9114] ? ext4_es_lookup_extent+0x41d/0xd30 [ 108.269980][ T9114] ext4_map_blocks+0x4cb/0x1640 [ 108.269980][ T9114] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 108.269980][ T9114] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 108.269980][ T9114] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 108.269980][ T9114] ? __brelse+0x84/0xa0 [ 108.269980][ T9114] ? __ext4_new_inode+0x144/0x57c0 [ 108.269980][ T9114] ext4_getblk+0xad/0x520 [ 108.269980][ T9114] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 108.269980][ T9114] ? ext4_free_inode+0x17e0/0x17e0 [ 108.269980][ T9114] ext4_bread+0x7c/0x380 [ 108.269980][ T9114] ? ext4_getblk+0x520/0x520 [ 108.269980][ T9114] ? dqget+0xff0/0xff0 [ 108.269980][ T9114] ext4_append+0x153/0x360 [ 108.269980][ T9114] ext4_mkdir+0x5e0/0xdf0 [ 108.269980][ T9114] ? ext4_rmdir+0xde0/0xde0 [ 108.269980][ T9114] vfs_mkdir+0x419/0x690 [ 108.269980][ T9114] do_mkdirat+0x21e/0x280 [ 108.269980][ T9114] ? __ia32_sys_mknod+0xb0/0xb0 [ 108.269980][ T9114] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 108.269980][ T9114] ? do_syscall_64+0x21/0x7d0 [ 108.269980][ T9114] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 108.269980][ T9114] do_syscall_64+0xf6/0x7d0 [ 108.269980][ T9114] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 108.269980][ T9114] RIP: 0033:0x4b02a0 [ 108.269980][ T9114] 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 [ 108.269980][ T9114] RSP: 002b:000000c00004d4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 108.269980][ T9114] RAX: ffffffffffffffda RBX: 000000c00002ea00 RCX: 00000000004b02a0 [ 108.269980][ T9114] RDX: 00000000000001c0 RSI: 000000c000122dc0 RDI: ffffffffffffff9c [ 108.269980][ T9114] RBP: 000000c00004d510 R08: 0000000000000000 R09: 0000000000000000 [ 108.269980][ T9114] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 108.269980][ T9114] R13: 000000000000006f R14: 000000000000006e R15: 0000000000000100 [ 108.549698][ T9130] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/9130 [ 108.559834][ T9130] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 108.565836][ T9130] CPU: 0 PID: 9130 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 108.569628][ T9130] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 108.569628][ T9130] Call Trace: [ 108.569628][ T9130] dump_stack+0x188/0x20d [ 108.569628][ T9130] debug_smp_processor_id.cold+0x88/0x9b [ 108.569628][ T9130] ext4_mb_new_blocks+0xa77/0x3b30 [ 108.569628][ T9130] ? ext4_ext_search_right+0x2ca/0xb20 [ 108.569628][ T9130] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 108.569628][ T9130] ext4_ext_map_blocks+0x2044/0x3410 [ 108.569628][ T9130] ? ext4_ext_release+0x10/0x10 [ 108.569628][ T9130] ? __down_timeout+0x2d0/0x2d0 [ 108.569628][ T9130] ? ext4_es_lookup_extent+0x41d/0xd30 [ 108.569628][ T9130] ext4_map_blocks+0x4cb/0x1640 [ 108.569628][ T9130] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 108.569628][ T9130] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 108.569628][ T9130] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 108.569628][ T9130] ? __brelse+0x84/0xa0 [ 108.569628][ T9130] ? __ext4_new_inode+0x144/0x57c0 [ 108.569628][ T9130] ext4_getblk+0xad/0x520 [ 108.569628][ T9130] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 108.569628][ T9130] ? ext4_free_inode+0x17e0/0x17e0 [ 108.569628][ T9130] ext4_bread+0x7c/0x380 [ 108.569628][ T9130] ? ext4_getblk+0x520/0x520 [ 108.569628][ T9130] ? dqget+0xff0/0xff0 [ 108.569628][ T9130] ? security_transition_sid+0x123/0x190 [ 108.569628][ T9130] ? security_transition_sid+0xed/0x190 [ 108.569628][ T9130] ext4_append+0x153/0x360 [ 108.569628][ T9130] ext4_mkdir+0x5e0/0xdf0 [ 108.569628][ T9130] ? ext4_rmdir+0xde0/0xde0 [ 108.569628][ T9130] vfs_mkdir+0x419/0x690 [ 108.569628][ T9130] do_mkdirat+0x21e/0x280 [ 108.569628][ T9130] ? __ia32_sys_mknod+0xb0/0xb0 [ 108.569628][ T9130] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 108.569628][ T9130] ? do_syscall_64+0x21/0x7d0 [ 108.569628][ T9130] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 108.569628][ T9130] do_syscall_64+0xf6/0x7d0 [ 108.569628][ T9130] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 108.569628][ T9130] RIP: 0033:0x45bd57 [ 108.569628][ T9130] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 2d bd 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 0d bd fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 108.569628][ T9130] RSP: 002b:00007fff848d8078 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 108.569628][ T9130] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000045bd57 [ 108.569628][ T9130] RDX: 0000000000000004 RSI: 00000000000001c0 RDI: 00007fff848d8190 [ 108.569628][ T9130] RBP: 000000000003a2f8 R08: 000000000000f8ff R09: 0000000000000000 [ 108.569628][ T9130] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 108.569628][ T9130] R13: 00007fff848d8190 R14: 8421084210842109 R15: 00007fff848d819c [ 108.986767][ T9131] IPVS: ftp: loaded support on port[0] = 21 [ 109.055757][ T9131] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/9131 [ 109.066140][ T9131] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 109.072283][ T9131] CPU: 1 PID: 9131 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 109.081143][ T9131] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 109.082182][ T9131] Call Trace: [ 109.082182][ T9131] dump_stack+0x188/0x20d [ 109.082182][ T9131] debug_smp_processor_id.cold+0x88/0x9b [ 109.082182][ T9131] ext4_mb_new_blocks+0xa77/0x3b30 [ 109.082182][ T9131] ? ext4_ext_search_right+0x2ca/0xb20 [ 109.082182][ T9131] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 109.082182][ T9131] ext4_ext_map_blocks+0x2044/0x3410 [ 109.082182][ T9131] ? ext4_ext_release+0x10/0x10 [ 109.082182][ T9131] ? __down_timeout+0x2d0/0x2d0 [ 109.082182][ T9131] ? ext4_es_lookup_extent+0x41d/0xd30 [ 109.082182][ T9131] ext4_map_blocks+0x4cb/0x1640 [ 109.082182][ T9131] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 109.082182][ T9131] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 109.082182][ T9131] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 109.082182][ T9131] ? __brelse+0x84/0xa0 [ 109.082182][ T9131] ? __ext4_new_inode+0x144/0x57c0 [ 109.082182][ T9131] ext4_getblk+0xad/0x520 [ 109.082182][ T9131] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 109.082182][ T9131] ? ext4_free_inode+0x17e0/0x17e0 [ 109.082182][ T9131] ext4_bread+0x7c/0x380 [ 109.082182][ T9131] ? ext4_getblk+0x520/0x520 [ 109.082182][ T9131] ? dqget+0xff0/0xff0 [ 109.082182][ T9131] ? security_transition_sid+0x123/0x190 [ 109.082182][ T9131] ? security_transition_sid+0xed/0x190 [ 109.082182][ T9131] ext4_append+0x153/0x360 [ 109.082182][ T9131] ext4_mkdir+0x5e0/0xdf0 [ 109.082182][ T9131] ? ext4_rmdir+0xde0/0xde0 [ 109.082182][ T9131] vfs_mkdir+0x419/0x690 [ 109.082182][ T9131] do_mkdirat+0x21e/0x280 [ 109.239079][ T9131] ? __ia32_sys_mknod+0xb0/0xb0 [ 109.242185][ T9131] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 109.242185][ T9131] ? do_syscall_64+0x21/0x7d0 [ 109.242185][ T9131] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 109.258119][ T9131] do_syscall_64+0xf6/0x7d0 [ 109.268096][ T9131] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 109.268096][ T9131] RIP: 0033:0x45bd57 [ 109.278145][ T9131] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 2d bd 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 0d bd fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 109.298128][ T9131] RSP: 002b:00007fff848d7f68 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 109.298128][ T9131] RAX: ffffffffffffffda RBX: 00007fff848d7fc0 RCX: 000000000045bd57 [ 109.318113][ T9131] RDX: 00000000004a9308 RSI: 00000000000001ff RDI: 00007fff848d7fc0 [ 109.318113][ T9131] RBP: 00007fff848d7fbc R08: 0000000000000000 R09: 0000000000000003 [ 109.318113][ T9131] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000074c988 [ 109.338233][ T9131] R13: 00007fff848d83a8 R14: 0000000000000000 R15: 0000000000000000 [ 109.360375][ T1170] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1170 [ 109.376437][ T1170] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 109.386823][ T1170] CPU: 2 PID: 1170 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 109.396656][ T1170] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 109.396656][ T1170] Call Trace: [ 109.396656][ T1170] dump_stack+0x188/0x20d [ 109.396656][ T1170] debug_smp_processor_id.cold+0x88/0x9b [ 109.396656][ T1170] ext4_mb_new_blocks+0xa77/0x3b30 [ 109.396656][ T1170] ? __kmalloc+0x62f/0x7a0 [ 109.396656][ T1170] ? ext4_ext_search_right+0x2ca/0xb20 [ 109.396656][ T1170] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 109.396656][ T1170] ext4_ext_map_blocks+0x2044/0x3410 [ 109.396656][ T1170] ? ext4_ext_release+0x10/0x10 [ 109.396656][ T1170] ? __down_timeout+0x2d0/0x2d0 [ 109.396656][ T1170] ? ext4_es_lookup_extent+0x41d/0xd30 [ 109.396656][ T1170] ext4_map_blocks+0x4cb/0x1640 [ 109.396656][ T1170] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 109.396656][ T1170] ? debug_smp_processor_id+0x2f/0x185 [ 109.396656][ T1170] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 109.396656][ T1170] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 109.396656][ T1170] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 109.396656][ T1170] ext4_writepages+0x1ab7/0x3400 [ 109.396656][ T1170] ? mark_lock+0xe0/0xdd0 [ 109.396656][ T1170] ? __ext4_mark_inode_dirty+0x950/0x950 [ 109.396656][ T1170] ? __ext4_mark_inode_dirty+0x950/0x950 [ 109.396656][ T1170] ? do_writepages+0xfa/0x2a0 [ 109.396656][ T1170] do_writepages+0xfa/0x2a0 [ 109.396656][ T1170] ? page_writeback_cpu_online+0x10/0x10 [ 109.396656][ T1170] ? do_raw_spin_unlock+0x171/0x260 [ 109.396656][ T1170] ? _raw_spin_unlock+0x24/0x40 [ 109.396656][ T1170] __filemap_fdatawrite_range+0x2aa/0x390 [ 109.396656][ T1170] ? collapse_file+0x3575/0x4300 [ 109.396656][ T1170] ? delete_from_page_cache_batch+0xec0/0xec0 [ 109.396656][ T1170] ? _raw_spin_unlock_irq+0x1f/0x80 [ 109.396656][ T1170] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 109.396656][ T1170] collapse_file+0x357f/0x4300 [ 109.396656][ T1170] ? collapse_huge_page+0x4370/0x4370 [ 109.396656][ T1170] ? khugepaged+0x24fa/0x3f80 [ 109.396656][ T1170] khugepaged+0x3049/0x3f80 [ 109.396656][ T1170] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 109.396656][ T1170] ? lock_downgrade+0x840/0x840 [ 109.396656][ T1170] ? finish_wait+0x260/0x260 [ 109.396656][ T1170] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 109.396656][ T1170] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 109.396656][ T1170] ? __kthread_parkme+0x13f/0x1e0 [ 109.396656][ T1170] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 109.396656][ T1170] kthread+0x388/0x470 [ 109.396656][ T1170] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 109.396656][ T1170] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 109.396656][ T1170] ret_from_fork+0x24/0x30 [ 109.715237][ T1170] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1170 [ 109.725434][ T1170] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 109.732146][ T1170] CPU: 2 PID: 1170 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 109.740761][ T1170] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 109.742059][ T1170] Call Trace: [ 109.742059][ T1170] dump_stack+0x188/0x20d [ 109.742059][ T1170] debug_smp_processor_id.cold+0x88/0x9b [ 109.742059][ T1170] ext4_mb_new_blocks+0xa77/0x3b30 [ 109.742059][ T1170] ? ext4_ext_search_right+0x2ca/0xb20 [ 109.742059][ T1170] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 109.742059][ T1170] ext4_ext_map_blocks+0x2044/0x3410 [ 109.742059][ T1170] ? ext4_ext_release+0x10/0x10 [ 109.742059][ T1170] ? __down_timeout+0x2d0/0x2d0 [ 109.742059][ T1170] ? ext4_es_lookup_extent+0x41d/0xd30 [ 109.742059][ T1170] ext4_map_blocks+0x4cb/0x1640 [ 109.742059][ T1170] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 109.742059][ T1170] ? debug_smp_processor_id+0x2f/0x185 [ 109.742059][ T1170] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 109.742059][ T1170] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 109.742059][ T1170] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 109.742059][ T1170] ext4_writepages+0x1ab7/0x3400 [ 109.742059][ T1170] ? mark_lock+0xe0/0xdd0 [ 109.742059][ T1170] ? __ext4_mark_inode_dirty+0x950/0x950 [ 109.742059][ T1170] ? __ext4_mark_inode_dirty+0x950/0x950 [ 109.742059][ T1170] ? do_writepages+0xfa/0x2a0 [ 109.742059][ T1170] do_writepages+0xfa/0x2a0 [ 109.742059][ T1170] ? page_writeback_cpu_online+0x10/0x10 [ 109.742059][ T1170] ? do_raw_spin_unlock+0x171/0x260 [ 109.742059][ T1170] ? _raw_spin_unlock+0x24/0x40 [ 109.742059][ T1170] __filemap_fdatawrite_range+0x2aa/0x390 [ 109.742059][ T1170] ? collapse_file+0x3575/0x4300 [ 109.742059][ T1170] ? delete_from_page_cache_batch+0xec0/0xec0 [ 109.742059][ T1170] ? _raw_spin_unlock_irq+0x1f/0x80 [ 109.742059][ T1170] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 109.742059][ T1170] collapse_file+0x357f/0x4300 [ 109.742059][ T1170] ? collapse_huge_page+0x4370/0x4370 [ 109.742059][ T1170] ? khugepaged+0x24fa/0x3f80 [ 109.742059][ T1170] khugepaged+0x3049/0x3f80 [ 109.742059][ T1170] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 109.742059][ T1170] ? lock_downgrade+0x840/0x840 [ 109.742059][ T1170] ? finish_wait+0x260/0x260 [ 109.742059][ T1170] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 109.742059][ T1170] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 109.742059][ T1170] ? __kthread_parkme+0x13f/0x1e0 [ 109.742059][ T1170] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 109.742059][ T1170] kthread+0x388/0x470 [ 109.742059][ T1170] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 109.742059][ T1170] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 109.742059][ T1170] ret_from_fork+0x24/0x30 [ 110.032772][ T1170] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1170 [ 110.042755][ T1170] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 110.049000][ T1170] CPU: 2 PID: 1170 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 110.058087][ T1170] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 [ 110.058868][ T1170] Call Trace: [ 110.058868][ T1170] dump_stack+0x188/0x20d [ 110.058868][ T1170] debug_smp_processor_id.cold+0x88/0x9b [ 110.058868][ T1170] ext4_mb_new_blocks+0xa77/0x3b30 [ 110.058868][ T1170] ? ext4_ext_search_right+0x2ca/0xb20 [ 110.058868][ T1170] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 110.058868][ T1170] ext4_ext_map_blocks+0x2044/0x3410 [ 110.058868][ T1170] ? ext4_ext_release+0x10/0x10 [ 110.058868][ T1170] ? __down_timeout+0x2d0/0x2d0 [ 110.058868][ T1170] ? ext4_es_lookup_extent+0x41d/0xd30 [ 110.058868][ T1170] ext4_map_blocks+0x4cb/0x1640 [ 110.058868][ T1170] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 110.058868][ T1170] ? debug_smp_processor_id+0x2f/0x185 [ 110.058868][ T1170] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 110.058868][ T1170] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 110.058868][ T1170] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 110.058868][ T1170] ext4_writepages+0x1ab7/0x3400 [ 110.058868][ T1170] ? mark_lock+0xe0/0xdd0 [ 110.058868][ T1170] ? __ext4_mark_inode_dirty+0x950/0x950 [ 110.058868][ T1170] ? __ext4_mark_inode_dirty+0x950/0x950 [ 110.058868][ T1170] ? do_writepages+0xfa/0x2a0 [ 110.058868][ T1170] do_writepages+0xfa/0x2a0 [ 110.058868][ T1170] ? page_writeback_cpu_online+0x10/0x10 [ 110.058868][ T1170] ? do_raw_spin_unlock+0x171/0x260 [ 110.058868][ T1170] ? _raw_spin_unlock+0x24/0x40 [ 110.198212][ T1170] __filemap_fdatawrite_range+0x2aa/0x390 [ 110.198212][ T1170] ? collapse_file+0x3575/0x4300 [ 110.198212][ T1170] ? delete_from_page_cache_batch+0xec0/0xec0 [ 110.198212][ T1170] ? _raw_spin_unlock_irq+0x1f/0x80 [ 110.198212][ T1170] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 110.198212][ T1170] collapse_file+0x357f/0x4300 [ 110.198212][ T1170] ? collapse_huge_page+0x4370/0x4370 [ 110.198212][ T1170] ? khugepaged+0x24fa/0x3f80 [ 110.198212][ T1170] khugepaged+0x3049/0x3f80 [ 110.198212][ T1170] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 110.198212][ T1170] ? lock_downgrade+0x840/0x840 [ 110.198212][ T1170] ? finish_wait+0x260/0x260 [ 110.198212][ T1170] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 110.198212][ T1170] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 110.198212][ T1170] ? __kthread_parkme+0x13f/0x1e0 [ 110.198212][ T1170] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 110.198212][ T1170] kthread+0x388/0x470 [ 110.198212][ T1170] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 110.198212][ T1170] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 110.198212][ T1170] ret_from_fork+0x24/0x30 [ 110.558767][ T1810] tipc: TX() has been purged, node left!